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EVBU (User`s) manual. - 6800 Microprocessor Bits

1. MOSI PD1 TXD IRQ RESET PC6 AD6 4 AD4 PC2 2 PCO ADO EXTAL E MODA LIR GND Figure 2 6 MCU I O Port Connector P4 EVBU Top View 2 26 M68HC11EVBU D AA MOTOROLA MODB VSTBY STRA AS STRB R W XTAL PC1 AD1 ADS PC5 AD5 PC7 AD7 XIRQ PDO RXD PD2 MISO PD4 SCK NC PA6 OC2 4 OCA PA2 IC1 1 6 14 4 12 PB2 A10 PBO 8 4 5 PE6 PE7 VRH SPARE SPARE VCC GND N 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 HARDWARE PREPARATION AND INSTALLATION GND MODA LIR E EXTAL PCO ADO 2 AD2 PC4 AD4 PC6 AD6 RESET IRQ PD1 TXD MOSI PD5 SS PA5 OC5 PA1 IC2 PB7 A15 PB5 A13 PB3 A11 PB1 A9 PEO PE1 PE2 PES VRL SPARE SPARE VCC GND Figure 2 7 MCU I O Port Connector P5 EVBU Bottom View M68HC11EVBU D 2 27 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 6 5 MCU A D Converter Circuitry Modifications The EVBU PCB contains a default cut trace located on the solder side of the PCB This cut trace is used to isolate the resident MCU device VRL pin pin 51 from ground pin 1 when an external VRL signal source is used refer to the schematic diagram Figure 6 2 for additional information The PCB default cut trace is illustrated below CUT U3 PINSt a PCB
2. net ied 3 5 4 1 Monitor Memory Map Limitations do te uc E pui Seri vase s 4 2 4 2 Monitor Program Commands isis stes ios teeta dessus abe Pose bd ya hee ove een 4 8 6 1 Input Power Connector Pin 6 1 6 2 Terminal I O Port Connector P2 Pin Assignments esee 6 2 6 3 Battery Backup Connector P3 Pin Assignments essen 6 3 6 4 MCU I O Port Connectors P4 and P5 Pin Assignments sene 6 3 6 5 BV BU Parts Dist oie deo idi obse eaa i ee ciue 6 6 viii M68HC11EVBU D AA MOTOROLA GENERAL INFORMATION CHAPTER 1 GENERAL INFORMATION 11 INTRODUCTION This manual provides general information hardware preparation installation instructions monitor program description operating instructions hardware description and support information for the M68HC11 Universal Evaluation Board hereafter referred to as EVBU Downloading S record information is contained in Appendix A While a listing of the EVBU monitor program is stored on the diskette supplied with the EVBU see file buf32 asm This file may be viewed using any text reader capable of handling a 102K file 1 22 FEATURES EVBU features include e An economical means of debugging user assembled code and evaluating MC68HC11AS E9 711E9 811A8 and 811E2 microcontroller unit MCU devices e One line
3. 3 6 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS CHAPTER 4 OPERATING INSTRUCTIONS 41 INTRODUCTION This chapter provides the necessary information to initialize and operate the EVBU Information consists of the control switch description operating limitations command line format monitor commands and operating procedures The operating procedures consist of assembly disassembly and downloading descriptions and examples 42 CONTROL SWITCH Use user reset switch S1 to reset the EVBU and MCU circuits This switch is a momentary action pushbutton switch 4 3 LIMITATIONS The default baud rate for the MC68HC11 MCU SCI is 9600 using a 2 MHz E clock You can reset the baud rate using the memory modify MM command to reprogram the BAUD register in the MCU Or by using instructions in the user program The EVBU can transfer data faster than some terminal devices can receive which at certain times can cause missing characters on the terminal display screen Memory display MD trace TRACE and help HELP commands may be affected by this problem You can either ignore the problem switch to a slower baud rate or use a different communications program When using the MD or TRACE commands the missing character problem can be resolved by displaying fewer address locations or tracing fewer instructions at a time respectively The monitor program uses the MCU internal RAM located at 0048 00FF The control registers are locate
4. HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 3 4 MCU Clock Reconfiguration Headers J5 and J6 Use jumper headers J5 and J6 to connect the MCU EXTAL and XTAL signals pins 7 and 8 to the MCU I O port connectors P4 and P5 This configuration is for remote applications The EVBU is factory configured and shipped without installed fabricated jumpers shown below 1 2 1 2 NOTE Care should be taken when routing the EXTAL and XTAL signals to a target system environment and or EVBU wire wrap area Additional capacitance and or extra noise could render the resident MCU oscillator non functional For special applications using the MCU EXTAL and XTAL signals in a target system environment or EVBU wire wrap area install fabricated jumpers on jumper headers J5 and J6 When jumpers are installed both EXTAL and XTAL signals are routed to the MCU I O port connectors P4 and P5 2 8 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 2 3 5 Trace Enable Header J7 Use jumper header J7 to select BUFFALO monitor debug operations by connecting the PA3 OCS signal pin 2 to the XIRQ signal pin 1 The EVBU is factory configured and shipped with a fabricated jumper installed on pins 1 and 2 as shown below This jumper must be installed during debugging operations J7 XIRQ 5 Fabricated Jumper For special applications which use the PA3 OCS signal remove the fabricated jumper on pins 1 and 2 to avoi
5. Connector P4 shown in Figure 2 6 is a 60 pin header that facilitates the interconnection of the EVBU MCU circuitry to external equipment or target system equipment For connector pin assignments and signal descriptions of the EVBU MCU I O port connector P4 refer to Chapter 6 2 6 4 Wire Wrap Area MCU Interconnection Wire wrap area to MCU interconnection is accomplished via the EVBU MCU I O port connector P5 Connector P5 is supplied by the user This connector is mounted on the bottom side of the EVBU PCB shown in Figure 2 6 Connector P5 shown in Figure 2 7 is a 60 pin header that facilitates the interconnection of the EVBU MCU circuitry to the EVBU wire wrap area components For connector pin assignments and signal descriptions of the EVBU MCU I O port connector P5 refer to Chapter 6 Refer to the parts list contained in Chapter 6 for the connector P5 component description M68HC11EVBU D 2 25 HARDWARE PREPARATION AND INSTALLATION GND VCC SPARE SPARE VRH PE7 PEG PE5 4 PBO 8 PB2 10 4 12 6 14 1 2 4 OCA PA6 OC2 NC PD4 SCK PD2 MISO PDO RXD XIRQ PC7 AD7 PC5 AD5 ADS PC1 AD1 XTAL STRB R W STRA AS MODB VSTBY AA MOTOROLA GND VCC SPARE SPARE VRL PE3 PE2 PE1 PEO PB1 A9 11 5 1 7 15 PA1 IC2 OC5 5 OC1 PD5 SS
6. lines and or timer 6 2 signals NC Not connected PA5 OC3 PORT A bits 5 0 General purpose lines and or timer 4 signals PA3 OC5 PA2 IC1 PA1 IC2 PAO IC3 PB7 A15 PORT B bits 7 0 General purpose output lines PB6 A14 PB5 A13 PB4 A12 PB3 A1 1 PB2 A10 PB1 A9 PBO A8 M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION Table 6 4 MCU I O Port Connectors P4 and P5 Pin Assignments continued Signal Mnemonic Signal Name And Description PEO PORT E bits 0 7 General purpose input and or A D channel PE4 input lines PE1 PE5 PE2 PE6 PES PE7 VRL VOLTAGE REFERENCE LOW Input reference supply voltage low line for the MCU analog to digital A D converter VRH VOLTAGE REFERENCE HIGH Input reference supply voltage high line for the MCU A D converter SPARE Spare pins see schematic diagram VCC 45 Vdc GND Ground M68HC11EVBU D 6 5 SUPPORT INFORMATION M MOTOROLA 6 3 PARTS LIST Table 6 5 lists the components of the EVBU by reference designation order The reference designation is used to identify the particular part on the parts location diagram Figure 6 1 that is associated with the parts list table This parts list reflects the latest issue of hardware at the time of printing Table 6 5 EVBU Parts List Le Printed Wiring Board PWB M68HC11EVBU C5 C6 Capacitor 27 pF 50 Vdc 20 user supplied capacitors For custom MCU operating fre
7. Motorola Inc is an Equal Opportunity Affirmative Action Employer IBM PC is a registered trademark of International Business Machines Corp Apple MacTerminal MacWrite are trademarks of Apple Computer Inc Macintosh is a trademark licensed to Apple Computer Inc Macintosh is a trademark of MacIntosh Laboratory Inc Red Ryder is a trademark of Freesoft Company The computer program stored in the Read Only Memory of the device contains material copyrighted by Motorola Inc first published 1990 and may be used only under a license such as the License For Computer Programs Article 14 contained in Motorola s Terms and Conditions of Sale Rev 1 79 PREFACE Unless otherwise specified all address references are in hexadecimal throughout this manual An asterisk following the signal name denotes that the signal is true or valid when the signal is low AA MOTOROLA CONTENTS CONTENTS CHAPTER 1 GENERAL INFORMATION DL INTER O DUC TION 1 1 2 FEATURES 5 E 1 1 1 3 SPECIFICA MONS 1 2 L4 GENERAL DESCRIPTION esee pepe stehen reason esee epe aute 1 2 VS EQUIPMENT REQUIRED etn ptu poet Mo d pup 1 3 LG CUSTOMER SUPPORT
8. TP1 CLK OUT Clock Output TP2 CPUR CPU Reset TP3 VSYS System Voltage TP4 LINE Line Sense TP5 POR Power On Reset OOOOOO TP6 PSE Power Supply Enable The above test points are provided for user monitoring and wire wrap area application purposes for MC68HC6STI device Refer to the MC68HC68T1 Real Time Clock plus RAM with Serial Interface data sheet MC68HC 6STI D for additional device information pertaining to the above test point signals Refer to the parts list contained in Chapter 6 for test points TP1 TP6 component descriptions 2 16 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 2 5 WIRE WRAP AREA The EVBU provides a small wire wrap area for MCU custom interfacing The wire wrap area is approximately 3 0 inches square consisting of 29 holes wide by 30 holes high The holes are on one tenth inch centers Figure 2 2 illustrates an exploded view of the wire wrap area A ground GND bus strip resides on the outside parameter of the wire wrap area A 5 Vdc bus is also provided at the upper left end of the wire wrap area With the wire wrap hole pattern provided dual in line package DIP device wire wrap sockets strip sockets headers and connectors can be installed Wire wrap components can be installed on the top side of the EVBU and wire wrapping can be performed on the bottom side of the EVBU The use of three quarter or one inch standoffs are recommended for wire wrap pin clearance on t
9. gt T 2 lt CR gt PSHA 8 Y FFFF X FFFF A 44 B FF C 10 5 0046 PSHB 9 Y FFFF X FFFF 44 B FF C 10 5 0045 gt 3 CR PSHX Y FFFF X FFFF A 44 B FF C 10 5 0043 JSR SE19D P E19D Y FFFF X FFFF A 44 B FF C 10 5 0041 CMPA 561 P E19F Y FFFF X FFFF A 44 B FF C 19 5 0041 gt 4 lt gt BLT 1 7 1 7 Y FFFF X FFFF A 44 B FF C 19 585 0041 RTS P ElFD Y FFFF X FFFF A 44 B FF C 19 5 0043 CMPA 530 P ElFF Y FFFF X FFFF 44 B FF C 19 5 0043 BLT 5 223 223 Y FFFF X FFFF 44 B FF C 19 5 0043 gt 4 30 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS TM Transparent Mode 4 6 17 Transparent Mode TM NOT APPLICABLE TO EVBU The TM command connects the EVBU host port to the terminal port which allows direct communication between the terminal and a host computer I O between the ports are ignored by the EVBU until the exit character is entered from the terminal The TM subcommands are as follows CTRL A Exit from transparent mode CTRL B Send break to host computer NOTE TM command can only be used if a host I O port is installed on the EVBU wire wrap area Example gt TM lt CR gt Enter transparent mode appslab login bill CR Host Password XXxXXxXXxx lt CR gt Host computer login response computer password System Message 5 5 CTRL A Task completed Enter exit command Exit transparent mode M68HC11EVBU D 4 31 OPE
10. 32 x 8 static RAM and a synchronous serial interface for MCU communications is accomplished via user supplied MC68HC68T1 device US Refer to the MC68HC68T1 Real Time Clock plus RAM with Serial Interface data sheet MC68HC6STI D for additional device information 5 204 Terminal I O Port Interface The EVBU uses a 5 volt RS 232C driver receiver device U4 to communicate to a terminal via the EVBU terminal I O port The terminal I O port baud rate defaults to 9600 baud via the MCU SCI This baud rate can be changed by software by reprogramming MCU BAUD register The terminal I O port is also used as a host computer I O port for downloading Motorola S records via BUFFALO monitor commands M68HC11EVBU D 5 3 HARDWARE DESCRIPTION AA MOTOROLA 5 4 M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION CHAPTER 6 SUPPORT INFORMATION 6 1 INTRODUCTION This chapter provides the connector signal descriptions parts list with associated parts location diagram and schematic diagrams for the EVBU 6 2 CONNECTOR SIGNAL DESCRIPTIONS The EVBU provides two MCU Input Output I O connectors P4 and P5 Connector P4 is used to interconnect the MCU I O to a target system environment or a convenient access to the MCU I O for user applications Connector P5 is used to interconnect the MCU I O to the EVBU wire wrap area Connector P1 interconnects an external power supply to the EVBU Connector P2 is provided to facilitate interconnection
11. 4 41 OPERATING INSTRUCTIONS AA MOTOROLA 4 84 IBM PC with PROCOMM to EVBU To perform the IBM PC to EVBU downloading procedure with PROCOMM perform observe the following 1 2 Start the PROCOMM EXE program Setup PROCOMM to match EVBU baud rate and protocol type AIt P then the number 5 as follows 9600 baud no parity 8 bits 1 stop bit full duplex Setup ASCII transfer parameters type 105 then the number 6 as follows Echo Local Yes Expand Blank Lines Yes Pace Character 0 Character pacing 25 1 1000 second Line Pacing 10 CR Translation None LF Translation None Save above settings to disk for future use Apply power to EVBU 5 Press IBM PC keyboard carriage return CR key to display applicable EVBU 4 42 monitor prompt Enter EVBU monitor download command as follows gt LOAD T CR Instruct to send the S record file by pressing the Pg Up key on the PC then follow PROCOMM instructions on the display screen to select the S record file Use the ASCII transfer protocol Motorola S record file is now transferred to the EVBU Upon completion of the S record transfer the following message is displayed done gt M68HC11EVBU D AA MOTOROLA HARDWARE DESCRIPTION CHAPTER 5 HARDWARE DESCRIPTION 51 INTRODUCTION This chapter provides an overall general description of the EVBU hardware This description is supported by a simplified block
12. 710 Wiesbaden 49 611 973050 HONG KONG Kwai Fong 852 6106888 Tai Po 852 6668333 INDIA Bangalore 91 80 5598615 ISRAEL Herzlia 972 9 590222 ITALY Milan 39 2 82201 JAPAN Fukuoka 81 92 725 7583 Gotanda 81 3 5487 8311 Nagoya 81 52 232 3500 Osaka 81 6 305 1802 Sendai 81 22 268 4333 Takamatsu 81 878 37 9972 Tokyo 81 3 3440 3311 KOREA Pusan 82 51 4635 035 Seoul 82 2 554 5118 MALAYSIA Penang 60 4 2282514 MEXICO Mexico City 52 5 282 0230 Guadalajara 52 36 21 8977 PUERTO RICO San Juan 809 282 2300 SINGAPORE 65 4818188 SPAIN Madrid 34 1 457 8204 SWEDEN Solna 46 8 734 8800 SWITZERLAND Geneva 41 22 799 11 11 Zurich 41 1 730 4074 TAIWAN Taipei 886 2 717 7089 THAILAND Bangkok 66 2 254 4910 UNITED KINGDOM Aylesbury 441 296 395 252 UNITED STATES Phoenix AZ 1 800 441 2447 For a list of the Motorola sales offices and distributors http www mcu motsps com sale off html M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION CHAPTER 2 HARDWARE PREPARATION AND INSTALLATION 21 INTRODUCTION This chapter provides unpacking instructions hardware preparation and installation instructions for the EVBU 2 2 UNPACKING INSTRUCTIONS NOTE If upon receipt the shipping carton is damaged request carrier s agent is present during unpacking and inspection of the EVBU Unpack EVBU from shipping carton Refer
13. All input commands can be entered either upper or lower case lettering All input commands are converted automatically to upper case lettering except for downloading commands sent to the host computer or when operating in the transparent mode maximum of 35 characters may be entered on a command line After the 36th character is entered the monitor automatically terminates the command entry and the terminal CRT displays the message Too Long Command line errors may be corrected by backspacing CTRL H or by aborting the command CTRL X or DELETE Pressing CR will repeat the most recent command The LOAD command is an exception M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS 4 6 MONITOR COMMANDS The BUFFALO monitor commands are listed alphabetically by mnemonic in Table 4 2 Each of the commands are described in detail following Table 4 2 In most cases the initial single letter of the command mnemonic or a specific symbol can be used A minimum number of characters must be entered to at least guarantee uniqueness from other commands 1 MO MOVE ME MEMORY If the letter M is entered BUFFALO uses the first command in Table 4 2 that starts with M Additional terminal keyboard functions are as follows CTRL A Exit transparent mode or assembler CTRL B Send break command to host in transparent mode CTRDH Backspace CTRL J Line feed lt lf gt CTRL W Wait freeze screen CTRL X Abort cancel c
14. B600 B7FF A delay loop is built in such that the erase time is 10 ms when running at 2 MHz E clock NOTE No erase verification message will be displayed upon completion of the bulk EEPROM erase operation User must verify erase operation by examining EEPROM locations using the MM or MD command Example gt BULK lt CR gt Bulk erase all MCU EEPROM locations B600 B7FF gt Prompt indicates erase sequence completed M68HC11EVBU D 4 15 OPERATING INSTRUCTIONS AA MOTOROLA BULKALL Erase All EEPROM amp Config Reg 4 6 5 Erase All EEPROM Locations amp the CONFIG Register BULKALL The BULKALL command lets you erase all MCU EEPROM locations B600 B7FF including the configuration CONFIG register location 103F on older MC68HC11A8 MCU mask sets A delay loop is built in such that the erase time is about 10 ms when running at 2 MHz E clock The MC68HC11E9 MCU CONFIG register cannot be changed in normal operating modes NOTE No erase verification message will be displayed upon completion of the bulkall EEPROM and configuration register erase operation User must verify erase operation by examining EEPROM locations or the configuration register location using the MM or MD command Example gt BULKALL lt CR gt Bulk erase all MCU EEPROM B600 B7FF and configuration register 103F locations gt Prompt indicates erase sequence completed 4 16 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS CALL Execu
15. FIRE EE baee 4 3 4 4 3 Monitor PEO SLAM oo e ott obse nume oae less aba ardua aera sede 4 5 4 5 COMMAND LINE FORMAT EN VE Ye EXER ES LU EUREN TUR E SR PUR EA UNE EARS 4 6 i pan ad 4 7 4 6 1 Xssembler Disassemblef eost qc rates tr dues a ro tuta dene 4 10 4 6 4 Erase EEPROM Locations A esee qood 4 15 4 6 6 Bx cute Subroutines i edet au EU Ep RISE Dan Cs ERR I EAR APRI 4 17 2 647 eee ead co 4 19 4 55 nic MOD M eos 4 20 AG OTe Gad I bb ppp tidem uu Mes Ee 4 21 4 6 10 Memory Display c 4 22 4611 oM emo Sapa adis did S oA 4 24 46 12 Move MEmoLV ats fuste pfe 4 26 4 6 L3 PROCESO ONL RING us ii aea gust 4 27 4 6 14 Register retirees nita cn eas ENSE 4 28 2 6 15 Stop at AddrESS 4 29 4616 TAGS Pr 4 30 4 60 17 Transparent Mode stato E iae Masao aa 4 31 4 6 18 cali 4 32 4 6 19 Transfer Data Bootstrap Mode Loc RE Io ed eva ote eee RENE 4 33 vi M68HC11EVBU D AA MOTOROLA C
16. Field Timer Input Capture 3 EOE2 0 4 Timer Input Capture 2 EOE5 3 EOE7 Timer Input Capture 1 EOE8 Real Time Interrupt EOEB E0ED IRQ EOEE XIRQ EOF1 3 EOF3 Software Interrupt SWI EOF4 3 EOF6 Illegal Opcode EOF7 EOF9 Computer Operating Properly COP EOFA EOFC Clock Monitor EOFD EOFF To use vectors specified in Table 3 2 you must insert a jump extended opcode in the three byte field of the vector required For an example for the IRQ vector the following is performed 1 Place 7E JMP at location 00 2 Place IRQ service routine address at locations 00EF and 00FO 3 The following is an example where the IRQ service routine starts at 0100 500 TE 01 00 JMP SERVICE During initialization BUFFALO checks the first byte of each set of three locations If a 7E jump opcode is not found BUFFALO will install a jump to a routine called STOPIT This assures there will be no uninitialized interrupt vectors which would cause undesirable operation during power up and power down If an interrupt is accidentally encountered the STOPIT routine will force a STOP instruction sequence to be executed A user may replace any of the JMP STOPIT instructions with a JMP to a user written interrupt service routine If a reset is issued via switch S1 BUFFALO will not overwrite these user jump instructions so they need not be re initialized after every reset
17. QvO OO QUO OQ Or OO OO Q O4Q O GROUND GND BUS Wrap Area Top Exploded View 2 Wire Figure 2 M68HC11EVBU D 2 18 AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION Use connectors P4 and P5 to interface to the resident MC68HC11E9 MCU device at location U3 A user supplied wire wrap type header connector is installed at location P5 on the solder side of the PCB shown in Figure 2 3 Both P4 and P5 connectors are wired parallel to each other Connector P4 is primarily used to interface to external equipment or target system Connector P5 is primarily used to interface directly to the EVBU wire wrap area TOP EVBU PCB AREA EVBU WIRE WRAP AREA EL P4 P5 WIRE WRAP N DOUBLE ROW POST WIRE WRAP HEADER DEVICE SOCKET USER SUPPLIED USER SUPPLIED STANDOFF USER SUPPLIED CUSTOM WIRING USER SUPPLIED BOTTOM Figure 2 3 Wire Wrap Area Side View M68HC11EVBU D 2 19 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 6 INSTALLATION INSTRUCTIONS The EVBU is designed for table top operation A user supplied 5 Vdc power supply and RS 232C compatible terminal are required for EVBU operation An RS 232C compatible host computer is opt
18. X 1000 A 44 B 70 C CO S 0047 P 0100 SPACE BAR Display remaining registers Y 7982 SPACE BAR X 1000 SPACE BAR A 44 SPACE BAR B 70 SPACE BAR C CO SPACE BAR 5 0047 SPACE BAR Entering a SPACE BAR following the stack pointer gt display will terminate RM command 4 28 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS STOPAT Stop at Address 4 6 15 Stop at Address STOPAT lt address gt where address specified user program counter PC stop address The STOPAT command causes a user program to be executed one instruction at at time until the specified address is encountered Execution begins with the current user PC address and stops just before execution of the instruction at the specified stop address The STOPAT command should only be used when the current value of the user PC register is known e g after a breakpoint is reached or after an RD command is used to set the user PC The STOPAT command has an advantage over breakpoints in that a stop address can be a ROM location while breakpoints only operate in RAM or EEPROM locations Since the STOPAT command traces one instruction at a time with a hidden return to the monitor after each user instruction some user programs will appear to execute slowly The stop address specified in the STOPAT command must be the address of an opcode just as breakpoints can only be set at opcode addresses NOTE Refer to example program shown on pag
19. auos 1 4 CHAPTER 2 HARDWARE PREPARATION AND INSTALLATION 2 INTRODUCTION 2 1 Z2INPACK ING INS TRUC IONS Lao eterni dest Rive debe tau peu deems oad 2 1 2 3 HARDWARE PREPAB NEBION 2 1 2 3 mput Power Select Header IL siia d 2 4 2 3 2 Program Execution Select Header 72 tete eiecit tee etate teneis 2 5 2 3 3 MCU Mode Select Headers 73 and J4 deae 2 6 2 3 4 MCU Clock Reconfiguration Headers 75 J6 sese 2 8 273 5 Lrace Enable Header 7 S Ree ERRARE 2 0 2 3 6 SCI Reconfiguration Headers 78 and J9 essere 2 10 2 3 7 SPI Reconfiguration Headers 110 thru 13 eio 2 11 2 3 8 Real Time Clock INT Header J14 essere 2 12 2 3 9 TxD Reconfiguration Header 115 iere ined 2 13 2 4 REAL TIME CLOCK RAM SERIAL INTERFACE 2 14 233 Diode Jumpers eae edt Ed o biduo deduce reo ded 2 15 24 2 Test Points CEP PPG cocco teet dos eth aos tiat Msi 2 16 25 WIRE WERAPAREN it mdi i E 2 17 2 6 INSTALLATION INSTRUCTIONS 2 20 2 6 1 Power Supply EVBU Interconnectior
20. control character of FF is sent prior to sending the data block This control character is part of the bootstrap mode protocol and establishes the baud rate for the rest of the transfer If only one address is provided the address will be used as the starting address and the block size will default to 256 bytes If no addresses are provided the block of addresses from 000 through COFF is assumed by the BUFFALO monitor program NOTE The MC68HC11A8 MCU requires a fixed block size of 256 bytes for bootloading while the MC68HCIIE9 MCU can accept a variable length block of 1 to 512 bytes The XBOOT command generates SCI transmitter output signals at 7812 5 baud which are intended for another MC68HC11 MCU device operating in the bootstrap mode These signals appear as nonsense data to the terminal display used for normal communication with the EVBU After using the XBOOT command the EVBU must be reset by pressing the reset switch S1 before normal communications can resume M68HC11EVBU D 4 33 OPERATING INSTRUCTIONS AA MOTOROLA XBOOT Transfer Data Bootstrap Mode The following procedure describes the use of the XBOOT command Before initiating the XBOOT command the EVBU should be prepared as follows 1 2 Cut 19 cut trace short on PCB solder side at location J9 Install fabricated jumper on jumper header J9 pins 1 and 2 After preparing the EVBU perform the following l Assemble or fill EVBU MCU EEPROM locations B6
21. default all I O performed with these routines are sent to the terminal port Redirection of the I O port is achieved by placing the specified value O SCI IZACIA 2 DUARTA 3 DUARTB into RAM location IODEV Utility subroutines available to the user are listed in Table 3 1 Table 3 1 Utility Subroutine Jump Table Address Routine Description FF7C WARMST Go gt prompt point skip BUFFALO message FF7F BPCLR Clear breakpoint table FF82 RPRINT Display user s registers FF85 HEXBIN Convert ASCII character in A register to 4 bit binary number Shift binary number into SHFTREG from the right SHFTREG is a 2 byte 4 hexadecimal digits buffer If A register is not hexadecimal location TMP1 is incremented and SHFTREG is unchanged FF88 BUFFAR Read 4 digit hexadecimal argument from input buffer to SHFTREG FF8B TERMAR Read 4 digit hexadecimal argument from terminal device to SHFTREG FF8E CHGBYT Write value if any from SHFTREG 1 to memory location pointed to by X Operation also applicable to EEPROM locations FF91 READBU Read next character from INBUFF FF94 INCBUF Increment pointer into input buffer FF97 DECBUF Decrement pointer into input buffer FF9A WSKIP Read input buffer until non whitespace character found FF9D CHKABR Monitor input for CTRL X DELETE or CTRL W requests FFAO UPCASE If character in accumulator A is lower case alpha convert to upper case FFA3 WCHEK Test ch
22. in EVBU memory S record files are made up of data and checksum values in a special format which facilitates downloading Appendix A describes the S record format in detail In a normally configured EVBU all data transfers including monitor communications and download data utilize the terminal I O port connector Pl Since there are no separate host communication ports available on the EVBU only the LOAD T and VERIFY T variations of the load and verify commands are applicable The setup for downloading includes a personal computer e g IBM PC or Macintosh a serial interface cable to connect the personal computer to the EVBU connector P2 and the EVBU with an applicable power source software terminal emulator program is also required Some typical terminal emulator programs for the IBM PC include PROCOMM and KERMIT Typical terminal emulator programs for the Macintosh include MacTerminal and Red Ryder S record programs for downloading are created by assembling programs on the personal computer PC The steps needed to develop a program are described briefly as follows 1 Assembly language program is entered into a text file on the PC A text editor is used to create this text file which is called a source program 2 An assembler program operating on the PC is used to translate the source program into an S record object file and or listing file Buf32 asm file on the EVBU diskette is an example of a large listing 3 After th
23. next address RETURN Do next opcode CTRL A Quit BF addrl lt addr2 gt lt data gt Block fill BR lt addr gt Set up breakpoint table BULK Erase the EEPROM BULKALL Erase EEPROM and CONFIG CALL lt addr gt Call user subroutine G lt addr gt Execute user cod LOAD VERIFY T lt host download command gt Load or verify S records MD lt 1 gt lt addr2 gt Memory dump MM lt addr gt Memory modify Open same address CTRL H or Open previous address CTRL J Open next address SPACE Open next address RETURN Quit lt addr gt 0 Compute offset to lt addr gt MOVE lt 1 gt lt s2 gt lt d gt Block move P Proceed continue execution RM P Y X A B C or S Register modify T lt n gt Trace n instructions T Transparent mode CTRL A exit CTRL B send break CTRL H Backspace CTRL W Wait for any key CTRL X or DELETE Abort cancel command RETURN Repeat last command gt 4 20 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS LOAD Load S Records 4 6 9 Load S Records LOAD lt host download command gt NOT APPLICABLE TO EVBU LOAD lt T gt where lt host download command gt download S records via host port lt T gt download S records to EVBU via terminal port NOTE As equipped from the factory the EVBU only supports the LOAD T variation of the load command The LOAD command moves downloads object data in S record format see Appendix A from an external hos
24. of a terminal and or host computer Connector P3 connects an external battery for battery backup purposes Pin assignments for the above connectors P1 through P5 are identified in Tables 6 1 through 6 4 Connector signals are identified by pin number signal mnemonic and signal name and description Table 6 1 Input Power Connector P1 Pin Assignments Pin Number Signal Mnemonic Signal Name And Description 1 45V 5 Vdc Power Input voltage 5 50 mA used by the EVBU logic circuits 2 GND Ground M68HC11EVBU D 6 1 SUPPORT INFORMATION Pin Number 21 25 6 2 MOTOROLA Table 6 2 Terminal I O Port Connector P2 Pin Assignments Signal Mnemonic GND RXD TXD NC CTS DSR SIG GND DCD NC DTR NC Signal Name And Description PROTECTIVE GROUND RECEIVED DATA Serial data input line TRANSMITTED DATA Serial data output line Not connected CLEAR TO SEND An output signal used to indicate ready to transfer data status This pin is connected to both DSR pin 6 and DCD pin 8 DATA SET READY An output signal used to indicate an on line in service active status This pin is connected to both CTS pin 5 and DCD pin 8 SIGNAL GROUND This line provides signal ground or common return connection common ground reference between the EVBU and RS 232C compatible terminal DATA CARRIER DETECT An output signal used to indicate an acceptable received line carrier s
25. port is then used for all subsequent terminal I O operations The EVBU terminal device is normally connected to the SCI M68HC11EVBU D 3 1 MONITOR PROGRAM M MOTOROLA 3 2 0 Command Interpreter The next section of BUFFALO is the command interpreter American Standard Code for Information Interchange ASCII characters are read from the terminal into the input buffer until a carriage return or a slash is received The command field is then parsed out of the input buffer and placed into the command buffer A table of commands is then searched and if a match is found the corresponding command module is called as a subroutine All commands return control back to the command interpreter upon completion of the operation 3 2 3 I O Routines The I O section of BUFFALO consists of a set of supervisor routines and three sets of driver routines The supervisor routines are INIT INPUT and OUTPUT These routines determine which driver subroutine to call to perform the specific action Each set of driver routines consists of an initialization routine an input routine and an output routine One set of drivers is for the SCI port and these routines are called ONSCI INSCI and OUTSCI The second set of drivers is for a DUART and these routines are called ONUART INUART and OUTUART The third set of drivers is for an ACIA and these routines are called ONACIA INACIA and OUTACIA All I O communications are controlled by three RAM locations IODEV
26. prompt is displayed or if a jump to internal EEPROM is executed Refer to paragraph 2 3 1 for additional program execution selection information At reset the monitor detects the state of the PEO line If a low state is detected the monitor program is executed and the prompt displayed If a high state is detected the monitor automatically jumps directly to EEPROM address location B600 and executes user program code without displaying the monitor prompt 44 1 Debugging Evaluation The debugging evaluation operation lets you debug user code under control of the BUFFALO monitor program User code can be assembled in one of two methods The first method assembles code using the BUFFALO monitor one line assembler The second method you assemble code on a host computer and then download it to the EVBU user RAM or EEPROM in Motorola S record format The monitor program is then used to debug the assembled user code A download to EEPROM will work if the baud rate is slow enough to allow EEPROM programming Since erasure and programming both require 10 milliseconds a slow baud rate 300 baud will have to be used to ensure enough time between characters If the EEPROM is bulk erased prior to downloading 600 baud allows enough time between characters 4 4 2 Alternate Baud Rates The following text assumes that a personal computer PC is used as the terminal device and a user program is assembled on the PC to produce an S record object file wh
27. the BUFFALO monitor program The monitor program uses the MCU internal RAM located at 0048 00FF The control registers are located at 1000 103F M68HC11EVBU D 5 1 HARDWARE DESCRIPTION MOTOROLA The EVBU allows the user to use all the features of the monitor BUFFALO program however it should be noted that the monitor program uses the MCU on chip RAM locations 0048 00FF leaving approximately 325 bytes of RAM for the user i e 0000 0047 and 0100 01FF 512 bytes of EEPROM are also available for user programs RXD PDO RXD 5 232 DRIVERS TXD TXD PD1 AND TERMINAL RECEIVER CONTROL lt lt PD2 PD5 BATTERY 4 WIRE WRAP AREA Figure 5 1 EVBU Block Diagram PEO PE7 PDO PD5 PCO PC7 PBO PB7 5 2 M68HC11EVBU D AA MOTOROLA HARDWARE DESCRIPTION 5 2 2 Memory The EVBU memory map is a single map design reflecting the resident MC68HCIIE9 MCU device The EVBU is configured for single chip mode of operation but can be reconfigured for expanded multiplexed special bootstrap or special test modes of operation Refer to the MC68HCIIE9 HCMOS Single Chip Microcontroller Advanced Information Data Book MC6SHCIIE9 D or Programming Reference Guide MC68HCIIE9RG AD for the specific memory map information on the four modes of operation 5 203 Real Time Clock RAM with Serial Interface An HCMOS real time clock calendar
28. to packing list and verify that all items are present Save packing material for storing or reshipping the EVBU 2 3 HARDWARE PREPARATION This paragraph describes the inspection preparation of EVBU components prior to use This description ensures the EVBU components are properly configured before start up The EVBU should be inspected and prepared for proper jumper placements Figure 2 1 illustrates the EVBU connector switch and jumper header locations Diode jumpers DJX and test point TPX locations are also illustrated An external 5 Vdc power supply connects to on the EVBU External terminal host computer equipment connects to P2 on the EVBU An external battery may be connected to P3 on the EVBU for battery backup purposes Connectors P4 and P5 are used to connect the EVBU to the wire wrap area or other user supplied equipment Switch S1 lets you reset the EVBU M68HC11EVBU D 2 1 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA NOTES The following pages describe the EVBU jumper headers Jumper headers consist of feed thru holes feed thru holes with cut trace shorts on the printed circuit board PCB solder side and jumper headers with fabricated jumpers installed as shown in Figure 2 1 The EVBU factory configuration is shown in Figure 2 1 The EVBU is configured for MC68HC11E9 MCU single chip mode of operation CAUTION Depending on the application you may need to cut the cut trace shorts on the PCB sol
29. 0 103F Some versions of EVBs have a D flip flop addressed at this location During initialization BUFFALO 3 2 writes 00 to location 4000 and various monitor operations cause 00 or 01 to be written to 4000 to retain compatibility Refer to the buf32 asm file on the EVBU diskette for additional information on DFLOP TARGCO and HOSTCO Since the EVBU has no memory or peripherals located at 4000 these writes should not concern most EVBU users BUFFALO supports serial I O to a terminal via ACIA external IC located at 9800 in the memory map During initialization BUFFALO 3 2 reads and writes to location 9800 and 9801 to see if a ACIA is present in the system If a ACIA is installed on the EVBU wire wrap area and connected to the MCU refer to the buf32 asm file on the EVBU diskette to understand implications BUFFALO supports serial I O to a terminal and or host via a DUART external IC located at 0000 in the memory map During initialization BUFFALO 3 2 reads and writes to location DOOC to see if a DUART is present in the system If a DUART is installed on the EVBU wire wrap area and connected to the MCU refer to the buf32 asm file on the EVBU diskette M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS 4 4 OPERATING PROCEDURES The EVBU is a simplified debugging evaluating tool designed for debugging user programs and evaluation of MC68HC11 family devices Use jumper header J2 to determine weather the BUFFALO monitor
30. 00 SB6FF with program to be bootloaded transmitted transferred to target MC68HC11 MCU device Enter XBOOT command and addresses without pressing carriage return CR key as follows gt B600 B6FF Do not press the ENTER key 3 Remove previously installed fabricated jumper from jumper header J9 4 34 Connect jumper wire from jumper header J9 pin 2 to RxD input of target MC68HC11 MCU device Reset target MC68HC11 MCU device in bootstrap mode Press carriage return CR key to invoke XBOOT command Since TxD is not connected to the terminal the user will not observe any changes on the terminal display CRT The bootload process takes approximately a third of a second to finish Disconnect jumper wire installed in step d Install fabricated jumper removed in step c Press EVBU reset switch S1 to restore normal EVBU operation M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS 4 7 ASSEMBLY DISASSEMBLY PROCEDURES The assembler disassembler is an interactive assembler editor Each source line is converted into the proper machine language code and is stored in memory overwriting previous data on a line by line basis at the time of entry In order to display an instruction the machine code is disassembled and the instruction mnemonic and operands are displayed valid opcodes are converted to assembly language mnemonics All invalid opcodes are displayed on the terminal CRT as ILLOP The syntax rules for
31. 9 0110 ER URB ORB CER GEB 0120 PE BE EH ROBE EP gt M68HC11EVBU D 4 23 OPERATING INSTRUCTIONS MOTOROLA MM Memory Modify 4 6 11 Memory Modify MM lt address gt where address memory location at which to start display modify The MM command allows the user to examine modify contents in user memory at specified locations in an interactive manner The MM command will also erase any EEPROM location and will reprogram the location with the corresponding value EEPROM locations treated as if RAM Once entered the MM command has several submodes of operation that allow modification and verification of data The following subcommands are recognized CTRL J or SPACE BAR or Examine modify next location CTRL H or or Examine modify previous location Reexamine modify same location CR Terminate MM operation O Compute branch instruction relative offset If an attempt is made to change an invalid address the invalid address message rom is displayed on the terminal CRT An invalid address is any memory location which cannot be read back immediately after a change in order to verify that change 4 24 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS MM Memory Modify Examples gt MM 0180 lt CR gt Display memory location 0180 0180 FF 66 lt CR gt Change data at 0180 an
32. An output strobe signal for parallel I O device handshaking in the single chip mode of operation R W READ WRITE An output control line used to control the direction of transfers on the MCU external data bus in the expanded multiplexed mode of operation EXTAL EXTERNAL CLOCK INPUT An input clock signal used to control the MCU internal clock generator The frequency applied to this pin must be four times higher than the desired E clock rate M68HC11EVBU D 6 3 SUPPORT INFORMATION MOTOROLA Table 6 4 MCU I O Port Connectors P4 and P5 Pin Assignments continued Signal Mnemonic Signal Name And Description XTAL CRYSTAL DRIVER An output clock signal used to drive the EXTAL input of another MC68HC11 MCU device PCO ADO PORT bits 0 7 General purpose lines PC1 AD1 PC2 AD2 PC3 AD3 PC4 AD4 PC5 AD5 PC6 AD6 PC7 AD7 RESET RESET An active low bidirectional control line used to initialize the MCU XIRQ NON MASKABLE INTERRUPT An active low input line used to request asynchronous non maskable interrupts to the MCU IRQ INTERRUPT REQUEST An active low input line used to request asynchronous interrupts to the MCU PDO RXD PORT D bits 0 5 General purpose lines These lines can be PD1 TXD used with the MCU Serial Communications Interface 5 and PD2 MISO Serial Peripheral Interface SPI PD3 MOSI PD4 SCK PD5 SS PA7 OC1 PORT A bits 7 6 General purpose
33. EXTDEV and HOSTDEV EXTDEV specifies the external device type 1 ACIA 2 DUART HOSTDEV specifies which I O port is used for host communications O SCI 1 ACIA 3 DUARTB IODEV instructs the supervisor routine which port driver routine to use 0 SCI 1 ACIA 2 DUARTA 3 DUARTB The INIT routines set up a serial transmission format of eight data bits one stop bit and no parity For the SCI the baud rate is set to 9600 for an 8 MHz crystal 2 MHz E clock A different baud rate can be achieved by modifying address location 102B refer to MCU data sheet SCI baud rate selection The INPUT routine reads from the specified port If a character is received the character is returned to accumulator A If no character is received a logic zero 0 is returned to accumulator A This routine does not wait for a character to be received before returning that function is performed by the INCHAR utility subroutine The OUTPUT routine takes the ASCH character in accumulator A and writes the character to the specified I O port This routine waits until the character begins transmitting before returning 3 2 M68HC11EVBU D AA MOTOROLA MONITOR PROGRAM 3 2 4 Utility Subroutines Several subroutines exist that are available for performing I O tasks A jump table has been set up in ROM directly before the interrupt vectors To use these subroutines execute a jump to subroutine JSR command to the appropriate entry in the jump table By
34. Figure 6 2 is the EVBU schematic diagram 2 04 o o o vs a 5 E 2 1 P OTP6 Figure 6 1 EVBU Parts Location Diagram 6 8 M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION Figure 6 2 EVBU Schematic Diagram Sheet 1 of 3 M68HC11EVBU D 6 9 SUPPORT INFORMATION AA MOTOROLA 6 10 M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION Figure 6 2 EVBU Schematic Diagram Sheet 2 of 3 M68HC11EVBU D 6 11 SUPPORT INFORMATION AA MOTOROLA 6 12 M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION Figure 6 2 EVBU Schematic Diagram Sheet 3 of 3 M68HC11EVBU D 6 13 SUPPORT INFORMATION AA MOTOROLA 6 14 M68HC11EVBU D AA MOTOROLA S RECORD INFORMATION APPENDIX A S RECORD INFORMATION 1 INTRODUCTION The S record format for output modules was devised for the purpose of encoding programs or data files in a printable format for transportation between computer systems The transportation process can thus be visually monitored and the S records can be more easily edited 2 S RECORD CONTENT When viewed by the user S records are
35. HAPTER 4 OPERATING INSTRUCTIONS 4 7 ASSEMBLY DISASSEMBLY PROCEDURES e 4 8 DOWNLOADING PROCBDUNRDBS etre terere troie 4 8 1 Apple Macintosh with MacTerminal to 4 8 2 Apple Macintosh with Red Ryder to EVBU seen 4 8 3 IBM PC with KERMIT to 4 8 4 IBM PC with PROCOMM to EVBU esee CHAPTER 5 HARDWARE DESCRIPTION S LINTRODU GTION itii etg vetet ed beet oa dd a ne 3 2 GENERAL DESCRIPTION o ee e aAA RN Ge ER e RU 25 2 1 MIGFOCOTDEEOTIOeE oco ticae Ferdi adobe viue stu DUAE Lo tu DNUS 2 2 2 o dea See aet i aede oe Diese 5 2 3 Real Time Clock RAM with Serial 5 2 4 Terminal I O Port Interface sese 6 1 INTRODUCTION eteerinen 6 2 CONNECTOR SIGNAL DESCRIPTIONS eene 6 3 PARTS LISTo eruen E E E A N A DOR Ios 64 i iik E E AA Feu ua RA APPENDIX A S RECORD INFORMATION INTRODUC TON Siaa A 2 S RECORD CONTENT e epa EN er e Ur RR AR Ard 5 REGORD TY PES cinere ag Diod a uode ede ASES RECORD CREATION A X SSRECORD EXAMPLE d ehe e are M68HC11EVBU D CO
36. M68HCII1EVBU D REV 3 April 1997 M6S8HCIIEVBU UNIVERSAL EVALUATION BOARD USER S MANUAL Information contained in this document applies to REVision B M68HC11EVBU Universal Evaluation Boards MOTOROLA Inc 1990 1997 Rights Reserved Motorola reserves the right to make changes without further notice to any products herein to improve reliability function or design Motorola does not assume any liability arising out of the application or use of any product or circuit described herein neither does it convey any license under its patent rights nor the rights of others Motorola products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other application in which the failure of the Motorola product could create a situation where personal injury or death may occur Should Buyer purchase or use Motorola products for any such unintended or unauthorized application Buyer shall indemnify and hold Motorola and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part Motorola and the Motorola logo are registered trademarks of Motorola Inc
37. NTENTS vii CONTENTS AA MOTOROLA LIST OF FIGURES 2 1 EVBU Connector Switch and Jumper Header Location 22 1 2 3 2 2 Wire Wrap Area Exploded View uico tus secuela ddr 2 18 2 3 Wire Wrap Atea SIMS caca et iei ee tis lut no idet auti act dude tk in AERE UN ERE 2 19 2 4 Terminal T O Port GOHBDe COE seo ide ee eia sii eae ad e dedu ies 2 22 2 5 Terminal Host Computer Cable Assembly Diagram eene 2 23 2 6 MCU I O Port Connector P4 EVBU Top View eese nennen 2 26 2 7 MCU I O Port Connector P5 EVBU Bottom View essen 2 27 B bv WB Block Diagrami ont t Le bd petia 5 2 6 1 EVBU Parts Location Diagram s siz csisisissaicassnceetiscccsandseenadeesndcceenseaveatisdesnceedbaccavabedseuteanecacts 6 8 6 2 EVBU Schematic Diagram Sheet 1 of 3 eer ee epe ee 6 9 6 2 EVBU Schematic Diagram Sheet 2 of eee 6 11 6 2 EVBU Schematic Diagram Sheet 3 of ie c edits 6 13 LIST OF TABLES 1 1 7 Specifications isnie IN ep IUE NAE 1 2 1 2 External Equipment BRequiretfients au eee eie tete 1 3 2 14 MCU 6 bot eai opt acc ie 2 7 3 1 Utility Subroutine Jump Table o ale ahaa taeda ee a EE n 3 3 3 2 Int rrupt Vector Jump Table
38. RATING INSTRUCTIONS AA MOTOROLA VERF Verify 4 6 18 Verify 5 FY host download command NOT APPLICABLE TO EVBU TEY lt T gt where lt host download command gt compare memory to host port download data lt T gt compare memory to terminal port download data NOTE As equipped from the factory the EVBU only supports the VERF lt T gt variation of the verify command The VERIFY command is similar to the LOAD command except that the VERIFY command instructs the EVBU to compare the downloaded S record data to the data stored in memory EXAMPLES DESCRIPTION gt VERIFY T lt CR gt Enter verify command Done Verification completed gt gt VERIFY T lt CR gt Enter verify command Mismatch encountered error addr E000 Error message displaying first address that failed to gt verify Refer to the downloading procedures at the end of this chapter for additional information pertaining to the use of the VERF command 4 32 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS XBOOT Transfer Data Bootstrap Mode 4 6 19 Transfer Data Bootstrap Mode XBOOT address1 lt address2 gt where lt address1 gt Starting address lt address2 gt Ending address The XBOOT command loads transfers a block of data from address1 through address2 via the serial communications interface SCI to another MC68HC11 MCU device which has been reset in the bootstrap mode A leading
39. S 232C compatible host computer to download Motorola S records via EVBU terminal I O port Download the BUFFALO monitor commands The Motorola S record format was devised for the purpose of encoding programs or data files in a printable format for transportation between computer systems Refer to Appendix A for additional S record information 1 5 EQUIPMENT REQUIRED Table 1 2 lists the external equipment requirements for EVBU operation Table 1 2 External Equipment Requirements External Equipment 5 power supply 1 Terminal RS 232C compatible Terminal host computer EVBU RS 232C cable assembly 1 1 Refer to Chapter 2 for details 2 Optional not required for basic operation Host computer RS 232C compatible 2 M68HC11EVBU D 1 3 GENERAL INFORMATION 16 CUSTOMER SUPPORT AA MOTOROLA For information about a Motorola distributor or sales office near you call AUSTRALIA Melbourne 61 3 887 0711 Sydney 61 2 906 3855 BRAZIL Sao Paulo 55 11 815 4200 CANADA B C Vancouver 604 606 8502 ONTARIO Toronto 416 497 8181 ONTARIO Ottawa 613 226 3491 QUEBEC Montreal 514 333 3300 CHINA Beijing 86 10 68437222 DENMARK 45 43488393 FINLAND Helsinki 358 9 6824 400 FRANCE Paris 33134 635900 GERMANY Langenhagen Hannover 49 511 786880 Munich 49 89 92103 0 Nuremberg 49 911 96 3190 Sindelfingen 49 7031 79
40. SOLDER SIDE Consult the MC68HC11E9 data sheet for specific information pertaining to the use of the pin 2 28 M68HC11EVBU D AA MOTOROLA MONITOR PROGRAM CHAPTER 3 MONITOR PROGRAM 3 1 INTRODUCTION This chapter is a description of the monitor program This description enables you to understand the basic structure of the program 3 2 PROGRAM DESCRIPTION The BUFFALO bit user fast friendly aid to logical operations monitor program is supplied with the EVBU The EVBU monitor program is stored in the MCU internal ROM and communicates via the MCU serial communications interface SCI Refer to the buf32 asm file on the EVBU diskettes for additional information pertaining to the monitor BUFFALO program The BUFFALO monitor program consists of five parts or sections as follows 1 Initialization 2 Command interpreter 3 I O routines 4 Utility subroutines 5 Command table 3 2 1 Initialization This part of BUFFALO contains all of the reset initialization code In this section internal RAM locations are set up and the I O channel for the terminal is set up To set up the terminal I O port BUFFALO must determine if the terminal is connected to the SCI as in the EVBU or to an external ACIA or DUART This is accomplished by sending a sign on message to all ports and then waiting for you to type carriage return CR on whichever device is the terminal port When BUFFALO recognizes a carriage return from a port that
41. TOROLA OPERATING INSTRUCTIONS BR Breakpoint Set 4 6 3 Breakpoint Set BR lt address gt where by itself removes clears all breakpoints proceeding lt address gt removes individual or multiple addresses from breakpoint table The BR command sets the address into the breakpoint address table During program execution a halt occurs to the program execution immediately preceding the execution of any instruction address in the breakpoint table A maximum of four breakpoints may be set After setting the breakpoint the current breakpoint addresses if any are displayed Whenever the G CALL or P commands are invoked the monitor program inserts breakpoints into the user code at the address specified in the breakpoint table Breakpoints are accomplished by the placement of a software interrupt SWI at each address specified in the breakpoint address table The SWI service routine saves and displays the internal machine state then restores the original opcodes at the breakpoint locations before returning control back to the monitor program SWI opcodes cannot be executed or breakpointed in user code because the monitor program uses the SWI vector RAM or EEPROM locations can be breakpointed Command Formats Description BR Display all current breakpoints BR lt address gt Set breakpoint BR lt addr1 gt addr2 Set several breakpoints BR Remove all
42. WINCHESTER 49 1125S 25 PIN D SUBMINIATURE CONNECTOR RED WIRE gt CONNECTED SIGNAL GND 25 PIN D SUBMINIATURE CONNECTOR Figure 2 5 Terminal Host Computer Cable Assembly Diagram M68HC11EVBU D 2 23 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA A Hayes compatible modem cable purchased from your local computer store can be used to connect the EVBU to your host computer The EVBU is wired as data communication equipment DCE whereas a dumb terminal and most serial modem ports on host computers are wired as data terminal equipment DTE This should allow a straight through cable to be used in most setups If an unknown cable is used to connect the EVBU to a host computer a null modem adapter shown below may be required to match the cable to the EVBU terminal port connector A null modem adapter is used to reverse the roles of various data and control signals to make a DTE device appear as a DCE device or vice versa DB 25S DB 25P GND GND TXD TXD RXD RXD RTS RTS CTS CTS DSR DSR SIG GND SIG GND DCD DCD DTR DTR NULL MODEM ADAPTER 2 24 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 2 6 3 External Equipment MCU Interconnection External equipment to MCU interconnection is accomplished via the EVBU MCU I O port connector P4 Connector P4 is supplied by the factory This connector is mounted on the top side of the EVBU PCB shown in Figure 2 3
43. a MacTerminal terminal emulator program use the pull down menu to change the baud rate Next press the keyboard lt CR gt key to resume communications with the EVBU as follows lt CR gt 102B 35 lt CR gt gt At this point all BUFFALO commands should operate normally except the display will be noticeably slower due to the slow baud rate To download the S record file to the EVBU EEPROM type the LOAD T command and a carriage return as follows gt LOAD T lt CR gt At this point BUFFALO is waiting for the S record file from the PC Instruct the PC to send the S record file to the EVBU using simple ASCII file transfer protocol If using an IBM PC use the alt S window to setup the American standard code for information interchange ASCII transfer perimeters this only needs to be performed once To invoke the file transfer press the page up keyboard key may be shared with the 9 key on the numeric keypad on some PC keyboards and follow instructions on the display screen If using a Apple Macintosh use the pull down menu to send the file Upon completion of the S record transfer the following message is displayed on the terminal display screen done gt 4 4 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS After downloading the S record file the EVBU may be reset via S1 to return to 9600 baud operation When the EVBU is returned to 9600 baud operation the terminal emulator must also be changed back to 9600 baud
44. a terminal port 2 same as MM Dump memory to terminal Memory modify Move memory to new location Proceed continue from breakpoint same as P same as same as MOVE M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS Table 4 2 Monitor Program Commands continued Command REGISTER RM p x y a b c s STOPAT lt address gt T lt n gt TM TRACE VERIFY lt gt XBOOT lt address1 gt lt address2 gt lt gt Description same as Register modify display user registers Stop at address Trace 1 FF instructions Enter transparent mode same as T Compare memory to download data via terminal port Send program to another M68HC11 via bootstrap mode same as HELP same as MM lt address gt NOTES 1 On newer MC68HC11 mask sets CONFIG can only be changed in special test or bootstrap modes of operation 2 Refer to Appendix A for S record information M68HC11EVBU D 4 9 OPERATING INSTRUCTIONS MOTOROLA ASM Assembler Disassembler 4 6 1 Assembler Disassembler ASM lt address gt where address 15 the starting address for the assembler operation Assembler operation defaults to internal RAM if no address is given The assembler disassembler is an interactive assembler editor Each source line is converted into the proper machine language code and is stored in memory overwriting previous data on a line by line basis at the time of entr
45. applicable EVBU monitor prompt Enter EVBU monitor download command as follows gt LOAD T CR Operate pull down File menu and select choose Send File ASCII Use dialog box and select applicable S record object file Click on Send Motorola S record file is now transferred to the EVBU NOTE S record file is not displayed during the file transfer to the EVBU Upon completion of the S record transfer the following message is displayed done gt M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS 4 8 3 IBM PC with KERMIT to EVBU To perform the IBM PC to EVBU downloading procedure with KERMIT perform observe the following EXAMPLE DESCRIPTION C gt KERMIT lt CR gt IBM PC prompt Enter KERMIT program IBM PC Kermit MS VX XX Type for help Kermit MS SET BAUD 9600 lt CR gt Set IBM PC baud rate Kermit MS gt CONNECT lt CR gt Connect IBM PC to EVBU Connecting to host type Control C to return to PC lt CR gt gt LOAD T lt CR gt EVBU download command via terminal port entered CTRL C Kermit MS PUSH CR The IBM Personal Computer DOS Version X XX C Copyright IBM Corp 1981 1982 1983 gt File Name gt COM1 lt CR gt Motorola S record file name C gt EXIT lt CR gt S record downloading completed Kermit MS CONNECT CR Return to EVBU monitor program gt CTRL C Kermit MS gt EXIT lt CR gt Exit KERMIT program M68HC11EVBU D
46. aracter in accumulator A and return with Z bit set if character is white space space comma tab FFA6 DCHEK Test character in accumulator A and return with Z bit set if character is delimiter carriage return or white space M68HC11EVBU D 3 3 MONITOR PROGRAM Address FFA9 FFAC FFAF FFB2 FFB5 FFB8 FFBB FFBE FFC1 FFC4 FFC7 FFCA FFCD FFDO AA MOTOROLA Table 3 1 Utility Subroutine Jump Table continued Routine INPUT OUTPUT OUTLHL OUTRHL OUTA OUT1BY OUT1BS OUT2BS OUTCRL OUTSTR OUTSTO INCHAR Convert left nibble of accumulator A contents to ASCII and output to terminal port Convert right nibble of accumulator A contents to ASCII and output to terminal port Output accumulator A ASCII character Convert binary byte at address in index register X to two ASCII characters and output Returns address in index register X pointing to next byte Convert binary byte at address in index register X to two ASCII characters and output followed by a space Returns address in index register X pointing to next byte Convert two consecutive binary bytes starting at address in index register X to four ASCII characters and output followed by a space Returns address in index register X pointing to next byte Output ASCII carriage return followed by a line feed Output string of ASCII bytes pointed to by address in index re
47. assembler disassembler e Host computer downloading capability e MC68HC11 MCU based debugging evaluating circuitry e MC68HCOSTI real time clock RAM with serial interface peripheral circuitry e RS 232C compatible terminal I O port e Wire wrap area for custom interfacing e Single 5 Vdc input power source requirements M68HC11EVBU D 1 1 GENERAL INFORMATION AA MOTOROLA 1 5 SPECIFICATIONS Table 1 1 lists the EVBU specifications Table 1 1 EVBU Specifications Characteristics MCU Terminal I O port Temperature Operating Storage Relative humidity Power requirements Primary P1 Vdd Secondary P1 Vdd Optional Battery backup P3 Optional Dimensions Width Length Wire wrap Area Area Specifications MC68HC11E9FN1 RS 232C compatible 25 degrees C 40 to 85 degrees 0 to 90 non condensing 5 0 Vdc 50 mA 7 5 to 414 0 Vdc 50 mA 3 0 25 uA 3 25 in 8 255 cm 6 69 in 16 986 cm Approx 3in square 7 62 cm Holes 29 wide x 30 high one tenth inch centers Standoffs Optional 0 75 in 1 905 cm or 1 0 in 2 54 cm 1 4 GENERAL DESCRIPTION The EVBU provides a low cost tool for debugging evaluation of MC68HC11A8 9 711E9 811A8 and 811E2 MCUs MC68HC11 MCU device is an advanced single chip MCU with on chip memory and peripheral functions Refer to the MC68HC11 MCU data sheet for additional device information The EVBU and a monitor debugging program
48. assembler mode of operation Examples gt ASM 0100 lt CR gt 0100 STX SFFFF gt LDAA 55 lt CR gt Immediate mode addressing requires 86 55 before operand 0102 STX SFFFF gt STAA CO CR Direct mode addressing 97 CO 0104 STX SFFFF gt LDS 0 X CR Index mode if offset 0 X will not AE 00 be accepted 0106 STX gt BRA C500 CR Branch out of range message Branch out of range 0106 STX SFFFF gt BRA 0130 CR Branch offsets calculated automatically 20 28 address required as branch operand 0108 STX SFFFF gt CTRL A Assembler operation terminated gt NOTE In the above example memory locations 0100 0108 previously contained FF data which disassembles to STX FFFF M68HC11EVBU D 4 11 OPERATING INSTRUCTIONS AA MOTOROLA BF Block Fill 4 6 2 Block Fill BF lt addressl gt address2 data where lt addressl1 gt Lower limit for fill operation address2 Upper limit for fill operation data pattern hexadecimal value The BF command lets you repeat a specific pattern throughout a determined user memory range in RAM or EEPROM If an invalid address is specified an invalid address message rom xxxx is displayed on the terminal CRT xxxx invalid address Examples gt BF 0100 01 FF lt CR gt Fill each byte of memory from 0100 through O1FF with data pattern FF gt BF B700 B700 0 lt CR gt Set location B700 to 0 4 12 M68HC11EVBU D AA MO
49. at was previously in memory If no new source line is submitted or if there is an error in the source line then the contents of memory remain unchanged Four instruction pairs have the same opcode so disassembly will display the following mnemonics Arithmetic Shift Left ASL Logical Shift Left LSL displays as ASL Arithmetic Shift Left Double ASLD Logical Shift Left Double LSLD displays as LSLD Branch if Carry Clear BCC Branch if Higher or Same BHS displays as BCC Branch if Carry Set BCS Branch if Lower BLO displays as BCS 4 10 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS ASM Assembler Disassembler If the assembler tries to assemble at an address that is not in RAM or EEPROM an invalid address message rom xxxx is displayed on the terminal CRT xxxx invalid address Assembler disassembler subcommands are as follows If the assembler detects an error in the new source line the assembler will output an error message and then reopen the same address location Assemble the current line and then disassemble the same address location Assemble the current line and then disassemble the previous sequential address location lt CR gt Assemble the current line and then disassemble the next opcode address CTRL J Assemble the current line If there isnt a new line to assemble then disassemble the next sequential address location Otherwise disassemble the next opcode address CTRL A Exit the
50. breakpoints BR lt addr1 gt lt addr2 gt Remove lt addr1 gt and add lt 2 gt BR addr1 lt addr2 gt Add lt addr1 gt clear all entries then add lt addr2 gt BR lt addr1 gt lt addr2 gt Add lt addr1 gt then remove lt addr2 gt M68HC11EVBU D 4 13 OPERATING INSTRUCTIONS BR Examples gt BR 0103 lt CR gt 0103 0000 0000 0000 gt gt BR 0103 0105 0107 0109 lt CR gt 0103 0105 0107 0109 gt gt BR lt CR gt 0103 0105 0107 0109 gt gt BR 0109 CR 0103 0105 0107 0000 gt gt BR 0109 lt CR gt 0109 0000 0000 0000 gt gt CR 0000 0000 0000 0000 gt gt BR E000 lt CR gt AA MOTOROLA Breakpoint Set Set breakpoint at address location 0103 Sets four breakpoints Breakpoints at same address results in only one breakpoint being set Display all current breakpoints Remove breakpoint at address location 0109 Clear breakpoint table and add 0109 Remove all breakpoints Only RAM or EEPROM locations can be breakpointed rom E000 Invalid address message 0000 0000 0000 0000 gt gt BR 0105 0107 0109 0111 0113 lt CR gt Maximum of four breakpoints can be set Full Buffer full message 0105 0107 0109 0111 gt 4 14 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS BULK Erase All EEPROM Locations 4 6 44 Erase All EEPROM Locations The BULK command lets you erase all MCU EEPROM locations
51. called BUFFALO Bit User Fast Friendly Aid to Logical Operations demonstrate the capabilities of this MCU The monitor program is contained in MCU ROM The debugging evaluation operation lets you debug user code under control of the BUFFALO monitor program 1 2 M68HC11EVBU D AA MOTOROLA GENERAL INFORMATION There are two ways to assemble user code use the line assembler in the BUFFALO monitor program or assemble code on a host computer and then download the code to the EVBU user RAM via an Motorola S records The monitor program is then used to debug the assembled user code Overall debugging evaluation control of the EVBU is provided by the monitor program via terminal interaction RS 232C terminal I O port interface circuitry provides communication and data transfer operations between the EVBU and external terminal host computer devices The terminal I O port is fixed at 9600 baud The EVBU has a wire wrap area for MCU custom interfacing The wire wrap hole pattern lets you install most standard dual in line package DIP device wire wrap sockets strip sockets headers and connectors Wire wrap components can be installed on the topside of the EVBU printed circuit board PCB and wire wrapping can be performed on the bottom side of the PCB MCU interfacing is accomplished via the MCU I O port connector to the wire wrap area EVBU operation requires a user supplied 5 Vdc power supply and an RS 232C compatible terminal You must use an R
52. code data record to be loaded verified at a 2 byte address 13 Hexadecimal 13 decimal 19 indicating 19 character pairs representing 19 bytes of binary data follow 00 Four character 2 byte address field hexadecimal address 0000 indicates location where the 00 following data is to be loaded M68HC11EVBU D A 3 S RECORD INFORMATION MOTOROLA The next 16 character pairs are the ASCII bytes of the actual program code data In this assembly language example the hexadecimal opcodes of the program are written in sequence in the code data fields of the S1 records Opcode Instruction 28 5F BHCC 0161 24 5F BCC 0163 22 12 BHI 0118 22 6A BHI 0172 00 04 24 BRSET 0 504 5012 29 00 BHCS 5010 08 23 7 BRSET 4 23 018C Balance of this code is continued in the code data fields of the remaining 51 records and stored in memory location 0010 etc 2A Checksum of the first S1 record The second and third S1 code data records each also contain 13 19 character pairs and are ended with checksums 13 and 52 respectively The fourth S1 code data record contains 07 character pairs and has a checksum of 92 The S9 termination record is explained as follows S9 S record type S9 indicating a termination record 03 Hexadecimal 03 indicating three character pairs 3 bytes follow 00 Four character 2 byte address field zeroes 00 FC Checksum of S9 record Each printable character in an S record i
53. d at 1000 103F The monitor program also uses Output Compare 5 5 for the TRACE instruction therefore TRACE cannot be used in user programs which use 5 Since PROCEED AND STOPAT commands indirectly use the TRACE function these commands also rely on the 5 to XIRQ connection via jumper header J7 The EVBU allows you to use all the features of the BUFFALO evaluation software however it should be noted when designing code that BUFFALO uses the MCU on chip RAM locations 0047 00FF leaving approximately 325 bytes for the user i e 0000 0047 and 0100 01FF 512 bytes of EEPROM B600 B7FF and approximately 325 bytes of RAM 0000 0047 0100 01FF are available for user developed software M68HC11EVBU D 4 1 OPERATING INSTRUCTIONS M MOTOROLA Table 4 1 is a lists of the BUFFALO monitor memory map limitations Address 0000 0047 0048 0065 0066 00C3 00C4 00FF 0100 01FF 1000 103F 4000 9800 9801 D000 DOOF 4 2 Table 4 1 Monitor Memory Map Limitations Restrictions Available to user BUFFALO sets default value of the user stack pointer at location 0047 BUFFALO monitor stack area BUFFALO variables Refer to the buf32 asm file on the EVBU diskette Interrupt pseudo vectors jumps User available MCU control registers Although RAM and registers can be moved in the memory map BUFFALO expects RAM at 0000 actually requires 0048 00FF and registers at 100
54. d interference between the PA3 OCS signal and the XIRQ signal In this configuration several BUFFALO monitor commands are not available BUFFALO commands which will not function without a jumper installed on J7 are proceed P stop at address 5 and trace T commands Refer to the schematic diagram Figure 6 2 located in Chapter 6 for PA3 OCS signal wiring information M68HC11EVBU D 2 9 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 3 6 SCI Reconfiguration Headers J8 and J9 Use jumper headers J8 and J9 shown below to connect the MCU PDO RXD and PDI TXD serial communications interface SCI signal lines to the MC145407 RS 232C driver receiver device located at U4 Jumper headers J8 and J9 have feed thru holes with cut trace shorts Fabricated jumpers for jumper headers J8 and J9 are not supplied by the factory 1 2 J8 PDO RXD J9 PD1 TXD Cut Trace Shorts NOTE If J8 and J9 cut trace shorts are cut you must install user supplied fabricated jumpers on J8 and J9 to return them to the factory configuration When isolation of the PDO RXD and PDI TXD signal lines from the MCU SCI to the MC145407 RS 232C driver receiver device are required you must cut the cut trace shorts To return jumper headers J8 and J9 to the factory configuration install user supplied fabricated jumpers on the J8 and J9 Refer to the schematic diagram Figure 6 2 located in Chapter 6 for PDO RXD and PD1 TXD signal wiring informati
55. d reexamine location 0180 66 55 lt CR gt Change data at 0180 and backup one location 017F FF AA lt CR gt Change data at 017F and terminate MM operation gt MM 013C lt CR gt Display memory location 013C FF O18EO CR 51 Compute offset result 51 013C FF MM 0100 CR Examine location 0100 0100 86 04 B7 01 FC 01 Examine next location s using SPACE BAR gt B700 CR Examine EEPROM location B700 B700 FF 52 CR Change data at location B700 MM B700 CR Reexamine EEPROM location B700 B700 52 gt M68HC11EVBU D 4 25 OPERATING INSTRUCTIONS MOTOROLA MOVE Move Memory 4 6 12 Move Memory MOVE lt addressl gt lt address2 gt lt dest gt where lt address1 gt Memory starting address lt address2 gt Memory ending address lt dest gt Destination starting address optional The MOVE command allows the user to copy move memory to new memory locations If the destination is not specified the block of data residing from address1 to address2 will be moved up one byte Using the MOVE command on EEPROM locations will program EEPROM cells No messages will be displayed on the terminal CRT upon completion of the copy move operation only the prompt is displayed Example gt MOVE E000 EOFF 0100 CR Move data from locations E000 SEOFF to locations 0100 01FF gt 4 26 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS P Proceed Continue from Brea
56. der side Use extreme care when cutting the cut trace shorts to avoid cutting adjacent PCB wiring traces Failure to adhere to this CAUTION could result in many hours of troubleshooting and repair time Jumper header locations J1 through J15 provide the following functional capabilities 2 2 Input Power Select J1 Program Execution Select J2 MCU Mode Select J3 and J4 MCU Clock Reconfiguration J5 and J6 Trace Enable J7 SCI Reconfiguration J8 and J9 SPI Reconfiguration J10 thru J12 Real Time Clock INT J14 TxD Reconfiguration J15 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION WIRE WRAP AREA DENOTES FABRICATED JUMPER INSTALLED ON JUMPER HEADER DENOTES JUMPER HEADER SUPPLIED DENOTES CUT TRACE SHORT ON PCB SOLDER SIDE DENOTES FEED THRU HOLES ONLY rrr DENOTES FEED THRU HOLES ONLY Figure 2 1 EVBU Connector Switch and Jumper Header Location Diagram M68HC11EVBU D 2 3 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 31 Input Power Select Header J1 Use jumper header J1 to select the input power to be applied to the EVBU The EVBU is factory configured and shipped with a fabricated jumper installed on pins 1 and 2 as shown below In this configuration you must supply 5 0 Vdc 50 mA to the input power connector J1 1 5 VDC 2 Fabricated Jumper 3 7 5 to 14 0 VDC If a 5 Vdc power supply is not available you can connect an alternate pow
57. diagram Figure 5 1 The EVBU schematic diagram located in Chapter 6 can also be referred to for the following descriptions 5 2 GENERAL DESCRIPTION Overall evaluation debugging control of the EVBU is provided by the BUFFALO monitor program residing in the resident microcontroller MCU ROM The wire wrap area interface is provided by the MCU device RS 232C terminal I O port interface circuitry provides communication and data transfer operations between the EVBU and external terminal host computer devices 5 2 1 Microcontroller The EVBU resident M68HC11E9 MCU device U3 is factory configured for the single chip mode of operation The single chip mode is accomplished by 5 Vdc applied to the MCU MODB pin and ground applied to the MCU MODA pin during reset The EVBU can be reconfigured for either the expanded multiplexed special bootstrap or special test modes of operation via jumper headers J3 and J4 For expanded multiplexed and special test modes of operation additional circuitry must be implemented on the EVBU wire wrap area to support the two modes The EVBU can be reconfigured for the special bootstrap mode of operation without additional circuitry The MCU configuration CONFIG register implemented in EEPROM is programmed such that the ROMON bit is set for EVBU operations When this bit is set MCU internal ROM is enabled and that memory space becomes internally accessed space This allows the memory at D000 FFFF to contain
58. dule Thus to add or delete commands all that is required is to include a new command module or delete an existing module and or delete the entry in the command table This procedure may be difficult to accomplish with the M68HCIIEVBU because the BUFFALO monitor is contained in ROM However with the standard M68HCIIEVB you may change commands as this version of the BUFFALO monitor is contained in EPROM 33 INTERRUPT VECTORS Interrupt vectors residing in MCU internal ROM are accessible as follows Each vector is assigned a three byte field residing in EVBU memory map locations 0000 00FF This is where the monitor program expects the MCU RAM to reside Each vector points to a three byte field which is used as a jump table to the vector service routine Table 3 2 lists the interrupt vectors and associated three byte field Table 3 2 Interrupt Vector Jump Table Interrupt Vector Field Serial Communications Interface SCI E0C4 0 6 Serial Peripheral Interface SPI 7 0 9 Pulse Accumulator Input Edge EOCA 0 Pulse Accumulator Overflow EOCD EOCF Timer Overflow EODO 0 2 Timer Output Compare 5 E0D3 005 Timer Output Compare 4 006 E0D8 Timer Output Compare 3 EOD9 Timer Output Compare 2 EODC 3 EODE Timer Output Compare 1 EODF E0E1 M68HC11EVBU D 3 5 MONITOR PROGRAM MOTOROLA Table 3 2 Interrupt Vector Jump Table continued Interrupt Vector
59. e 4 16 for the following STOPAT command example The RD command was used prior to this example to set the user PC register to 0100 Example gt STOPAT 0108 lt CR gt Execute example program until 0108 is reached 0108 Y DEFE X F4FF 44 C 90 5 0047 gt M68HC11EVBU D 4 29 OPERATING INSTRUCTIONS AA MOTOROLA T Trace 4 6 16 Trace T lt n gt where n is the number in hexadecimal 1 FF max of instructions to execute default value of 1 is used if n is not specified The T command allows the user to monitor program execution on an instruction by instruction basis The user may optionally execute several instructions at a time by entering a count value up to SFF Execution starts at the current program counter PC Each event message line includes a disassembly of the instruction that was traced and a register display showing the CPU state after execution of the traced instruction The trace command operates by setting the OC5 interrupt to time out after the first cycle of the first user opcode fetched NOTE The RD command was used to set the user PC register to FF85 prior to starting the following trace examples SINGLE TRACE EXAMPLE gt T lt CR gt JMP SEIF7 P ELF7 Y FFFF X FFFF A 44 B FF 10 S 0046 gt MULTIPLE TRACE EXAMPLES
60. e creation of the S record files the files are downloaded to the EVBU as shown in the following step by step procedures M68HC11EVBU D 4 37 OPERATING INSTRUCTIONS AA MOTOROLA 4 8 1 Apple Macintosh with MacTerminal to EVBU The MacTerminal downloading program in this application is used as a terminal emulator for the Apple Macintosh computer To download a Motorola S record file from the Apple Macintosh computer to the EVBU perform the following steps 1 Select the following menu Terminal Settings Terminal Cursor Shape Underline Line Width 80 Columns Select On Line Auto Repeat Click on OK 2 Select the following menu Compatibility Settings Baud rate 9600 same as EVBU Bits per Character 8 Bits Parity None Handshake None Connection Modem or Another Computer Connection Port Modem or Printer Click on OK 3 Select the following menu File Transfer Settings Settings for Pasting or Sending Text Word Wrap Outgoing Text File Transfer Protocol Text Settings for Saving Lines Off Top Retain Line Breaks Click on OK 4 Apply power to the EVBU 5 Press Apple Macintosh computer keyboard carriage return CR key to display applicable EVBU monitor prompt 6 Apple Macintosh computer displays the prompt 7 Enter EVBU monitor download command as follows 4 38 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS gt LOAD T lt CR gt 8 Operate pull down File menu and select c
61. e last memory location accessed Each displayed line of memory consists of a four digit hexadecimal address applicable to the memory location displayed followed by 16 two digit hexadecimal values contents of the sixteen memory locations followed by the ASCII equivalents if applicable of the the 16 memory locations Since not all 8 bit values correspond to a displayable ASCII character some of the character positions at the end of a line may be blank 4 22 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS MD Memory Display EXAMPLES gt MD E61F lt CR gt E610 F1 34 02 54 4D EE E4 04 54 45 53 54 FE 29 FF 42 4 TM TEST B E620 55 46 46 41 4C 20 33 2E 32 20 28 69 6E 74 29 UFFALO 3 2 int E630 20 2D 20 42 69 74 20 55 73 65 72 20 46 61 73 74 Bit User Fast E640 20 46 72 69 65 6E 64 6C 79 20 41 69 64 20 74 6F Friendly Aid to E650 20 4 6F 67 69 63 61 6C 20 70 65 72 61 74 69 Logical Operati E660 6F 6E 04 57 68 61 74 3F 04 54 6F 6F 20 4C 6F 6E on What Too Lon E670 67 04 46 75 6C 6C 04 70 D2 20 04 72 6F 6D 2D g Full Op rom E680 04 43 6F 6D 6D 61 6E 64 3F 04 42 62 64 20 61 72 Command Bad ar E690 67 75 60 65 6E 74 04 4E 6F 20 68 6F 73 74 20 70 gument No host p gt MD 0130 0120 CR 0130 EBRUERCOEB EREE EP REY BRE BP Bek gt MD 0100 0120 CR 0100 86 04 B7 01 01 01 01 39 FF FF FF FF FF FF
62. ed to the EVBU terminal port connector P2 1 2 NOTE If J15 cut trace short is cut you may solder a grounding strap between the feed through holes on J15 to return it to the factory configuration When the TxD signal line is required for an external connection you must cut the solder side trace and make the connection to J15 pin 2 When reconfiguration of the TxD signal line is required you must solder a user supplied jumper header in the J15 feed through holes and then install a fabricated jumper on the jumper header Refer to the parts list contained in Chapter 6 for jumper header J15 component description Refer to the schematic diagram Figure 6 2 located in Chapter 6 for TxD signal wiring information M68HC11EVBU D 2 13 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 4 REAL TIME CLOCK RAM SERIAL INTERFACE PERIPHERAL A user supplied HCMOS real time clock RAM and serial interface peripheral device MC68HC68T1 can be installed on the EVBU at location U5 The MC68HC68T1 peripheral device contains a real time clock calendar a 32 x 8 static RAM and a synchronous serial three wire interface for MCU communications Operating in a burst mode successive clock or RAM locations be read or written using only a single starting address An on chip oscillator allows acceptance of a selectable crystal frequency or the device can be programmed to accept a 50 60 Hz line input frequency Features of the MC68HC68T1 peripheral de
63. er source 7 5 to 14 0 to the input power connector To utilize this secondary power source install an MC78LOSC voltage regulator at location Ul shown below After installing the voltage regulator move the fabricated jumper on pins 1 and 2 of jumper header J1 to pins 2 and 3 U1 MC78L05C TOP PCB VIEW 2 4 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 2 3 2 Program Execution Select Header J2 Use jumper header J2 to select whether the BUFFALO monitor prompt is displayed or if a jump to internal EEPROM is executed At reset the monitor checks the logic state of the PEO line If PEO 0 a jumper installed on pins 2 and 3 of jumper header J2 the monitor program is executed and the prompt displayed If PEO 1 a jumper is installed on pins 1 and 2 of jumper header J2 the monitor automatically jumps directly to EEPROM address location B600 and executes user program code without monitor intervention The EVBU is factory configured and shipped with a jumper installed on pins 2 and 3 of jumper header J2 BUFFALO monitor program execution shown below Reconfigure the EVBU by moving the jumper to pins 1 and 2 of jumper header J2 if you want to jump directly to EEPROM address B600 for user code execution J2 1 EEPROM LOGIC 1 2 Fabricated Jumper 3 MONITOR LOGIC 0 If you use the PEO line for A D operations the loading condition introduced by jumper header J2 may not be desired There are tw
64. essentially character strings made of several fields which identify the record type record length memory address code data and checksum Each byte of binary data is encoded as a 2 character hexadecimal number the first character representing the high order 4 bits and the second the low order 4 bits of the byte The 5 fields which comprise an S record are shown below TYPE RECORD LENGTH ADDRESS CODE DATA CHECKSUM where the fields are composed as follows Field Printable Contents Characters Type 2 S record type 50 S1 etc Record length 2 The count of the character pairs in the record excluding the type and record length Address 4 6 0r8 The 2 3 or 4 byte address at which the data field is to be loaded into memory Code data 0 2n From 0 to n bytes of executable code memory load able data or descriptive information For compatibility with teletypewriters some programs may limit the number of bytes to as few as 28 56 printable characters in the S record Checksum 2 The least significant byte of the one s complement of the sum of the values represented by the pairs of characters making up the record length address and the code data fields M68HC11EVBU D A 1 S RECORD INFORMATION AA MOTOROLA Each record may be terminated with a CR LF NULL Additionally an S record may have an initial field to accommodate other data such as line numbers generated by some time sharing systems Accuracy of transmi
65. gister X until character is an end of transmission 04 Same as OUTSTR except leading carriage return and line feed is skipped Input ASCII character to accumulator A and echo back This routine loops until character is actually received Used during initialization to preset indirect interrupt vector area in RAM This routine or a similar routine should be included in a user program which is invoked by the jump to B600 feature of BUFFALO When accessing BUFFALO utility routines always reference the routines by the applicable address SFF7C through FFDO in the jump table rather than the actual address in the BUFFALO monitor program Jump table addresses remain the same when a new version of BUFFALO is developed even though the actual addresses of the routine may change Programs that reference routines by the jump table addresses are not required to be changed to operate on revised versions of the BUFFALO monitor program 8 4 M68HC11EVBU D AA MOTOROLA MONITOR PROGRAM 3 2 5 Command Table The command table consists of three lines for each entry The first byte is the number of characters in the command name The second entry is the ASCII command name The third entry is the starting address of the command module As an example FCB 3 characters command name FCC ASM ASC literal command name string FDB ASM Jump address for command module Each command in the BUFFALO program is a individual mo
66. he bottom side of the EVBU The standoff mounting holes are shown below X 5 35 c x WIRE WRAP md P2 AREA A Two 60 pin MCU I O port connectors P4 and P5 are provided on the EVBU Connector P4 is factory supplied and connector P5 is user supplied Refer to the parts list contained in Chapter 6 for connector P5 component description As shown on the following page connector P5 supplies the EVBU wire wrap area with the 5 Vdc and ground GND power connections M68HC11EVBU D 2 17 HARDWARE PREPARATION AND INSTALLATION 29HoLEs 59 60 Or O 0 9 QUO O30 Op QUO Q0 5 OOOOOOO0O0nQ QO O0 00 OO OD OO Q0 QOO O0 QUO OU ooo0oo0o0o00O i QOO OO OX OO O0 OQ i 0 0 Q0 QOO OO Q O 0 0 0 QU O OD Oi QOO O0 O00 OP OOOO Or CIO 9 OHO QUO OX TG OO 0390 00 039 6 QUOD OO OO O0 oo0oo0oo0o0000O f oo0oo0oo0o0000O p oo0oo0oo0o0000O p QOO QO OO OO O OsO O QOO OUO QUO Or OQOO00O0 0 00 00 009 0 0 0 QcO QUO QOO 0 QOO OOO0 0 9 0 Q0 OO OO Ol OOOOOO0000 QUO OO QUO QOO OQ O0 OO 30 QUOC OO 0 0 Q O9 HOLES 0 0 0 OO O QUO OD Ou Ol QUO 0 OQ O00 O0 O20 O0 QuO OO OL OOO
67. hoose Send File 9 Use dialog box and select applicable S record object file Click on Send Motorola S record file is now transferred to the EVBU NOTE S record file is not displayed during the file transfer to the EVBU Upon completion of the S record transfer the following message is displayed done gt NOTE The EVBU may have to be reset to regain monitor control depending on the version of BUFFALO and how the file transfer program terminates the download operation There is a problem which occurs when using the EVBU with the MacTerminal program when performing a downloading operation The MacTerminal program sends a carriage return and line feed characters at the end of the downloaded S record file The EVBU monitor treats this as a erroneous command and the EVBU will have to be reset to regain monitor control M68HC11EVBU D 4 39 OPERATING INSTRUCTIONS M MOTOROLA 4 8 2 Apple Macintosh with Red Ryder to EVBU The Red Ryder downloading program in this application is also used as a terminal emulator for the Apple Macintosh computer To download a Motorola S record file from the Apple Macintosh computer to the EVBU perform the following steps 1 2 Launch Red Ryder program Set up computer program to match EV BU baud rate typically as follows 9600 baud no parity 8 bits 1 stop bit full duplex 3 Apply power to EVBU 4 40 Press Apple Macintosh computer keyboard carriage return CR key to display
68. i oe 2 20 2 6 2 Terminal BV BU 2 22 2 6 3 External Equipment MCU 2 25 2 6 4 Wire Wrap Area MCU Interconnection 2 25 2 6 5 MCU A D Converter Circuitry 2 28 M68HC11EVBU D CONTENTS M MOTOROLA CHAPTER 3 MONITOR PROGRAM 3A INTRODUCTION 4 2 3 5 8 8 UIT AERE eS RU AED 3 1 3 PROGRAM DESCRIPTION netos iuda tuto tex 3 1 DD 2 3 1 3 22 Command TOC T T S 3 2 3 2 3 VO ROUNE er 3 2 35 2 4 Utility SUDFOUDTIOS rcs tede edite d dpt 3 3 3 2 5 COMI ANG Table 3 5 S INTERRUPT VECTORS eR i i Mte 3 5 CHAPTER 4 OPERATING INSTRUCTIONS 4 1 INTRODUCTION C P UR 4 1 AD CONTROL SWITCH id 4 2S LIMPPATIONS Get Le Ee 4 1 AA OPERATING PROCEDUNRPDBS EUR EAS RR RAE 4 3 Z4 1 Debugsinp Bval atibh e deste nou pene tac p dune 4 3 AAD Alternate Baud Rales as o rete tete
69. ia a user supplied cable assembly as shown in Figure 2 5 Connect one end of the cable assembly to EVBU connector P2 shown in Figure 2 4 Connect the other end of the cable assembly to the user supplied terminal host computer Refer to Chapter 6 for connector pin assignments and signal descriptions of EVBU terminal port connector P2 For those using an IBM PC or Apple Macintosh personal computer PC use a Hayes compatible modem cable to connect the PC to EVBU terminal port connector P2 GND TXD RXD NC CTS DSR SIG GND DCD NC NC NC NC NC Figure 2 4 Terminal I O Port Connector o RAON N 000000000000 0 14 15 16 17 18 19 20 21 22 23 24 25 DTR NC NC NC NC NC Figure 2 5 illustrates a suitable cable assembly for connecting the EVBU to a dumb terminal This cable assembly is made from standard mass termination ribbon cable components 2 22 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 20 OR 25 CONDUCTOR FLAT RIBBON CABLE 3M 3365 20 TE OR 43365 25 25 D SUBMINIATURE 25 D SUBMINIATURE MALE PIN FEMALE SOCKET CONNECTORPART 5 CONNECTORPART 5 1 CIRCUIT ASSEMBLY CORP 1 CIRCUIT ASSEMBLY CORP CA 25 SMD P CA 25 SMD S 2 ITT CANNON DBSP B25P 2 ITT CANNON DBSP B25S 3 ANSLEY 609 25P 3 ANSLEY 609 25S 4 WINCHESTER 49 1125P 4
70. ich is to be downloaded into EVBU EEPROM For this example no assumptions are made about the previous EEPROM contents During the download operation BUFFALO determines on a byte by byte basis whether or not erasure is required prior to programming a downloaded value into each EEPROM location Since erasure and programming both require 10 milliseconds a slow baud rate 300 baud will have to be used to ensure enough time between characters M68HC11EVBU D 4 3 OPERATING INSTRUCTIONS AA MOTOROLA At the start of this procedure the PC will be operating a terminal emulator program such as PROCOMM KERMIT MacTerminal or Red Ryder and the BUFFALO prompt gt will be displayed First change the BAUD register from 30 selects default 9600 baud rate for SCI to 35 to select 300 baud with a memory modify MM command as follows gt MM 102B lt CR gt BOLD entries are user entered on the terminal keyboard 102B 30 35 lt CR gt Since the communication baud rate changes when pressing the carriage return lt CR gt key after typing 35 you may observe a few invalid characters on the terminal display screen which can be ignored Next change the communication program baud rate to 300 baud If using an IBM PC with a PROCOMM terminal emulator program use the alt P window Hold down the alt keyboard key while pressing the p keyboard key A window appears on the terminal display screen to change the baud rate If using an Apple Macintosh with
71. ignal has been detected This pin is connected to both CTS pin 5 and DSR pin 6 Not connected DATA TERMINAL READY An input line used to indicate an on line in service active status Not connected M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION Table 6 3 Battery Backup Connector P3 Pin Assignments SS Signal Mnemonic Signal Name And Description 3 Vdc Power Input voltage 3 0 Vdc 25 uA used by the EVBU MC68HC68T1 real time clock battery backup feature E ng Table 6 4 MCU I O Port Connectors P4 and P5 Pin Assignments Signal Mnemonic Signal Name And Description GND Ground MODB MODE B An input control line used in conjunction with the MODA pin to select the MCU operating mode VSTBY STANDBY VOLTAGE An input MCU RAM standby power line MODA MODE A An input control line used in conjunction with the MODB pin to select the MCU operating mode LIR LOAD INSTRUCTION REGISTER An open drain output signal used to indicate an instruction is starting STRA STROBE A An input edge detecting signal for parallel I O device handshaking in the single chip mode of operation AS ADDRESS STROBE An output control line used to demultiplex port C address and data signals in the expanded multiplexed mode of operation E ENABLE CLOCK An output control line used for timing reference E clock frequency is one fourth the frequency of the XTAL and EXTAL pins STRB STROBE B
72. inued Reference Designation Component Description P Terminal block 2S series Augat RDI 2SV 02 power supply connector Connector cable 25 pin ITT DBP 25SAA terminal I O port connector P3 user supplied header Header jumper single row post 2 pin Aptronics 929705 01 02 real time clock backup battery connector P4 Header double row post 60 pin Aptronics 929715 01 30 MCU I O port connector 1 P5 user supplied header Header double row post 60 pin Aptronics 929715 01 30 MCU I O port connector 2 TP1 TP6 user supplied Test point feed thru hole 6 each Header single row post 1 pin Aptronics header 929705 01 01 U1 user supplied 78105 voltage regulator low current regulator MC34064 voltage detector 3 80 4 20 Vdc I C MC68HC11E9FN1 MCU MC145407 5V only driver receiver EIA 232 D formerly RS 232C MC68HC68T1 real time clock RTC RAM with serial interface user supplied RTC Socket PC mount 52 pin PLCC AMP 821 575 1 use with U3 Socket 16 pin DIP Robinson Nugent ICL 163 S6 TG use with U5 x1 Ceramic resonator MCU 8 0 MHz Panasonic EFO GC8004A4 Fox FSC8 00 Quartz oscillator 32 768 Khz Fox NC38 32 768KHz Fabricated jumper Aptronics 929955 00 use with jumper headers J1 J2 and J7 M68HC11EVBU D 6 7 SUPPORT INFORMATION M MOTOROLA 6 4 DIAGRAMS Figure 6 1 is the EVBU parts location diagram
73. ional for downloading user assembled code to the EVBU via the terminal I O port connector P2 2 6 1 Power Supply EVBU Interconnection The EVBU requires 5 Vdc 50 mA and GND for operation Interconnection of the power supply wiring to the EVBU power supply connector P1 is shown below L P1 The power supply cable consists of two 14 22 AWG wires that interconnect 5 Vdc and ground GND from the user supplied power supply to the EVBU connector P1 2 20 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION Jumper header J1 is used to select the input power to be applied to the EVBU The EVBU is factory configured and shipped with the fabricated jumper installed on pins 1 and 2 as shown below In this configuration you must supply 5 0 Vdc 50 mA max to the input power connector P1 J1 1 5 Fabricated Jumper 2 3 47 5 to 14 0 If a 5 Vdc power supply is not available an alternate power source 7 5 to 14 0 Vdc can be connected to the input power connector To utilize this secondary power source install an MC78LO05C voltage regulator at location Ul Upon completion of the voltage regulator installation you must reinstall the fabricated jumper on jumper header J1 from pins 1 and 2 to pins 2 and 3 M68HC11EVBU D 2 21 HARDWARE PREPARATION AND INSTALLATION 2 6 22 Terminal EVBU Interconnection M MOTOROLA Interconnection of an RS 232C compatible terminal to the EVBU is accomplished v
74. is no code data field Only one termination record is used for each block of S records Normally only one header record is used although it is possible for multiple header records to occur A 2 M68HC11EVBU D AA MOTOROLA S RECORD INFORMATION 4 S RECORD CREATION S record format programs may be produced by several dump utilities debuggers or several cross assemblers or cross linkers Several programs are available for downloading a file in S record format from a host system to an 8 bit or 16 bit microprocessor based system 5 S RECORD EXAMPLE Shown below is a typical S record format module as printed or displayed 500600004844521 5 51 51 107003000144ED492 S 130000285F245F2212226A000424290008237C2A 1300100002000800082629001853812341001813 13002041E900084E42234300182342000824A952 S9030000FC The above module consists of an SO header record four S1 code data records and an S9 termination record The SO header record is comprised of the following character pairs S0 S record type 50 indicating a header record 06 Hexadecimal 06 decimal 6 indicating six character pairs or ASCII bytes follow 00 Four character 2 byte address field zeroes 00 48 44 ASCII H D R HDR 52 1 Checksum of SO record The first S1 code data record is explained as follows 51 S record type S1 indicating a
75. kpoint 4 6 13 Proceed Continue This command is used to proceed or continue program execution without having to remove assigned breakpoints This command is used to bypass assigned breakpoints in a program executed by the G command NOTE Refer to example program shown on page 4 16 for the following P command example Breakpoints have been inserted at locations 0105 and 0107 refer to example on pages 4 16 and 4 17 Example gt G 0100 lt CR gt Start execution at 0100 P 0105 Y DEFE X F4FF A 44 B FE S 0047 Breakpoint encountered at 0105 Continue execution gt P lt CR gt P 0107 Y DEFE X F4FF A 44 B FE C 90 S 0047 Breakpoint encountered at 0107 M68HC11EVBU D 4 27 OPERATING INSTRUCTIONS MOTOROLA RM Register Modify Display 4 6 14 Register Modify Display RM p y x a b c s The RM command is used to modify the MCU program counter P Y index Y X index X A accumulator A B accumulator B condition code register C and stack pointer S register contents Examples gt RM lt CR gt Display P register contents 0108 Y 7982 X FFOO 44 B 70 C CO 5 0047 P 0108 0100 CR Modify P register contents gt gt RM X lt CR gt Display X register contents 0100 Y 7982 X FFOO 44 B 70 C CO 5 0047 X FFO0 1000 lt CR gt Modify X register contents gt gt RM lt CR gt Display P register contents P 0100 Y 7982
76. must install a user supplied fabricated jumper on J4 to return it to the factory configuration 2 6 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION In order to select the expanded multiplexed special bootstrap or special test modes of operation remove the cut trace short between pins 1 and 2 of jumper header J4 Then install user supplied fabricated jumpers on jumper headers J3 and J4 Refer to Table 2 1 for directions when configuring the desired EVBU M68HC11E9 MCU mode of operation Table 2 1 MCU Mode Select J4 MODA 1 J3 MODB MCU Mode Select Installed 2 Removed Single Chip Removed 3 Removed Expanded Multiplexed Installed 2 Installed Special Bootstrap Removed 3 Installed Special Test NOTES 1 Installed jumper equals a logic 0 shorted to ground while a missing jumper equals a logic 1 open pull up 2 The cut trace short is present or a jumper is installed on J4 3 The cut trace short and jumper are removed from J4 The EVBU can be reconfigured for either the single chip expanded multiplexed special bootstrap or special test modes of operation via jumper headers J3 and J4 For expanded multiplexed and special test modes of operation additional peripheral circuitry must be implemented on the EVBU wire wrap area to support the expanded modes The EVBU can be reconfigured for the special bootstrap mode of operation without additional peripheral circuitry M68HC11EVBU D 2 7
77. o ways to bypass this potential problem 1 Jumper header J2 is only required at the trailing edge of reset so you can remove the fabricated jumper after reset Using this method it is possible that your target system circuitry might drive the PEO line to the wrong state during reset 2 Program the first three EEPROM locations with 7E 0 and 0A respectively Next remove installed jumper from jumper header J2 Independent of the level present on the PEO line the BUFFALO monitor will gain control after a reset operation For additional EEPROM jump operation information described above refer to EVBU monitor program lines 0162 and 0163 of the listing stored on the EVBU diskette see file buf32 asm M68HC11EVBU D 2 5 HARDWARE PREPARATION AND INSTALLATION M MOTOROLA 2 3 5 MCU Mode Select Headers J3 J4 Use jumper headers J3 and J4 to select the MCU operation mode The EVBU resident M68HC11E9 MCU device U3 is factory configured and shipped for single chip mode of operation No fabricated jumpers are required on jumper headers J3 and J4 for this configuration due to the cut trace short on PCB solder side of J4 If the J4 cut trace short is cut you must install a user supplied fabricated jumper on jumper header J4 to return the EVBU to the factory configuration single chip mode Jumper header J3 does not contain a cut trace short 1 2 J3 MODB J4 MODA 1 2 Cut Trace Short NOTE If J4 cut trace short is cut you
78. ommand DELETE Abort cancel command CR Enter command repeat last command NOTES 1 Execution is restarted by any terminal keyboard key 2 When using the control key with a specialized command such as CTRL A the CTRL key is depressed and held then the A key is depressed Both keys are then released Command line input examples in this chapter are amplified with the following BOLD entries are user entered on the terminal keyboard Command line input is entered when the carriage return key CR key is depressed Typical example of this explanation is gt F000 F100 CR M68HC11EVBU D 4 7 OPERATING INSTRUCTIONS 4 8 AA MOTOROLA Table 4 2 Monitor Program Commands Command ASM lt address gt ASSEM BF lt addr1 gt lt addr2 gt lt data gt BR lt gt BREAK BULK BULKA BULKALL CALL lt address gt COPY DUMP ERASE FILL G lt address gt GO HELP HOST LOAD lt T gt MEMORY MD lt addr1 gt lt addr2 gt MM lt address gt MOVE lt addr1 gt lt addr2 gt lt dest gt P PROCEED RD READ Description Assembler disassembler same as ASM Block fill memory with data Breakpoint set same as BH Erase all EEPROM locations same as BULKALL Bulk erase EEPROM CONFIG register 1 Execute subroutine same as MOVE same as MD same as BULK same as BF Execute program same as G Display monitor commands same as TM Download S records vi
79. on 2 10 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 2 3 7 SPI Reconfiguration Headers J10 thru J13 Use jumper headers J10 through J13 shown below to connect the MCU PD4 SCK PD2 MISO PD3 MOSI and PD5 SS serial peripheral interface SPI signal lines to the MC68HC68T1 peripheral device location U5 The feed thru holes for jumper headers J10 through J13 have cut trace shorts Fabricated jumpers for jumper headers J10 through J13 are not supplied by the factory 1 2 J10 PD2 MISO J11 PD3 MOSI J12 PD4 SCK J13 PD5 SS Cut Trace Shorts NOTE If J10 through J13 cut trace shorts are removed you must install user supplied fabricated jumpers on J10 through J13 to return them to the factory configuration When isolation of the PDA SCK PD2 MISO PD3 MOSI and PD5 SS signal lines from the MCU SPI to the MC68HC68T1 peripheral device are required cut the solder side traces To return 710 through J13 to the factory configuration install user supplied fabricated jumpers on jumper headers J10 through J13 Refer to the schematic diagram Figure 6 2 located in Chapter 6 for PDA SCK PD2 MISO PD3 MOSI and PD5 SS signal wiring information M68HC11EVBU D 2 11 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA 2 3 8 Real Time Clock INT Header J14 Use jumper header J14 shown below to disconnect the MCU XIRQ signal line from the MC68HC68T1 peripheral device located at 05 INT signal pin EVBU i
80. operation 4 43 Monitor Program The monitor program BUFFALO is the resident firmware for the EVBU which provides a self contained operating environment The monitor interacts with the user through predefined commands that are entered from a terminal You can use any of the commands supported by the monitor NOTE EVBU contains no hardware to support the host related commands e g ACIA DUART A standard input routine controls the EVBU operation while you enter a command line Command processing begins only after the command line has been terminated by depressing the keyboard carriage return lt CR gt key M68HC11EVBU D 4 5 OPERATING INSTRUCTIONS AA MOTOROLA 4 5 COMMAND LINE FORMAT The command line format is as follows gt lt command gt lt parameters gt lt CR gt where gt EVBU monitor prompt lt command gt Command mnemonic single letter for most commands parameters Expression or address 4 6 CR ENTER keyboard key depressed to enter command NOTES The command line format is defined using special characters which have the following syntactical meanings lt gt Enclose syntactical variable Enclose optional fields Enclose optional fields repeated These characters are not entered by the user but are for definition purposes only Fields are separated by any number of space comma or tab characters 3 Allinput numbers are interpreted as hexadecimal
81. owing mnemonics e Arithmetic Shift Left ASL Logical Shift Left LSL displays as ASL e Arithmetic Shift Left Double ASLD Logical Shift Left Double LSLD displays as LSLD Branch if Carry Clear BCC Branch if Higher or Same BHS displays as BCC e Branch if Carry Set BCS Branch if Lower BLO displays as BCS If the assembler tries to assemble at an address that is not in RAM or EEPROM an invalid address message rom xxxx is displayed on the terminal CRT xxxx invalid address Assembler disassembler subcommands are as follows If the assembler detects an error in the new source line the assembler will output an error message and then reopen the same address location Assemble the current line and then disassemble the same address location Assemble the current line and then disassemble the previous sequential address location CR Assemble the current line and then disassemble the next opcode address CTRL J Assemble the current line If there isnt a new line to assemble then disassemble the next sequential address location Otherwise disassemble the next opcode address CTRL A Exit the assembler mode of operation 4 36 M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS 4 8 DOWNLOADING PROCEDURES This portion of text describes the EVBU downloading procedures Downloading operations allow Motorola s S record files to be transferred from a personal computer to the EVBU or to be verified against data
82. quency replace ceramic resonator X1 with crystal and install C5 and C6 capacitors 27 pF values are for 8 MHz operation Refer to MC68HC11E9 data sheet for X1 C5 and C6 values for specific operating frequencies Capacitor 1 0 uF 50 Vdc 20 C15 C16 Capacitor 10 pF 50 Vdc 20 D2 user supplied diode Diode jumper feed thru holes with trace For RTC battery backup cut solder side cut trace and install 1N4001 diode D1 D3 D4 user supplied Diode jumper feed thru holes with trace diodes For RTC battery backup cut solder side cut trace and install three 1N4148 diodes J1 J2 Header jumper single row post 3 pin Aptronics 929705 01 03 J4 J8 J13 J15 Header jumper single row post 2 pin Aptronics 929705 01 02 PCB header feed thru holes with cut trace For jumper installation cut solder side cut trace and install fabricated jumper on component side jumper header as required J3 J5 J7 J14 Header jumper single row post 2 pin Aptronics 929705 01 02 header feed thru holes without cut trace J15 user supplied jumper Jumper header feed thru holes with cut trace header For jumper header installation cut solder side cut trace install jumper header on component side and install fabricated jumper on jumper header as required Header jumper single row post 2 pin Aptronics 929705 01 02 6 6 M68HC11EVBU D AA MOTOROLA SUPPORT INFORMATION Table 6 5 EVBU Parts List cont
83. s encoded in hexadecimal ASCII in this example representation of the binary bits which are actually transmitted For example the first 51 record above is sent as shown below LENGTH ADDRESS CODE DATA CHECKSUM 0101 0011 0011 0001 0011 0001 0011 0011 0011 0000 0011 0000 0011 0000 0011 0000 0011 0010 0011 1000 0011 mE ou 0011 0010 0100 0001 4 M68HC11EVBU D
84. s factory configured and shipped without a fabricated jumper installed on pins 1 and 2 as shown below Jumper header J14 is used to connect INT output of MC68HC6STI peripheral device to the MCU XIRQ signal line J14 1 2 NOTE The INT signal line is a output signal which is connected to the XIRQ input of the MCU XIRQ is also used by the BUFFALO monitor for tracing refer to paragraph 2 3 5 Refer to the jumper header 77 and jumper header J14 descriptions because the respective functions could interfere with each other When connection of the MC68HC6STI peripheral device INT signal line to MCU is required you must install a user supplied fabricated jumper on the component side of the PCB Refer to the schematic diagram Figure 6 2 located in Chapter 6 for INT and XIRQ signal wiring information 2 12 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 2 3 9 TxD Reconfiguration Header J15 As shipped jumper header J15 shown below is used to connect the MC145407 RS 232C driver receiver device located at U4 TxD signal line to the terminal port connector P2 No jumper header is installed in location J15 it consists of two feed thru holes with a cut trace short When the cut trace is cut a user connection is made to J15 pin 2 to facilitate driving a buffered TxD signal to a user system in the special bootstrap mode with the XBOOT command without the removal of the external terminal connect
85. s original call address or a breakpoint address if encountered M68HC11EVBU D AA MOTOROLA OPERATING INSTRUCTIONS G Execute Program 4 6 7 Execute Program G lt address gt where address 15 the starting address where program execution begins The G command allows the user to initiate user program execution free run in real time The user may optionally specify a starting address where execution is to begin Execution starts at the current program counter PC address location unless a starting address is specified Program execution continues until a breakpoint is encountered or the EVBU reset switch S1 is activated pressed NOTE Refer to example program shown on page 4 16 and insert breakpoints at locations 0105 and 0107 for the following G command example Example G 0100 lt gt Begin program execution at PC address location 0100 0105 Y DEFE X F4FF 44 B FE S 0047 Breakpoint encountered at 0105 M68HC11EVBU D 4 19 OPERATING INSTRUCTIONS HELP 4 6 8 ELP AA MOTOROLA Help The HELP command enables the user available EVBU command information to be displayed on the terminal CRT for quick reference purposes EXAMPLE gt HELP lt CR gt ASM lt addr gt Line assembler disassembler Do same address D Do previous address CTRL J Do
86. ssion is ensured by the record length byte count and checksum fields A 3 S RECORD TYPES Eight types of S records have been defined to accommodate the several needs of the encoding transportation and decoding functions The various Motorola upload download and other record transportation control programs as well as cross assemblers linkers and other file creating or debugging programs utilize only those S records which serve the purpose of the program For specific information on which S records are supported by a particular program the user manual for that program must be consulted NOTE The EVBU monitor supports only the S1 and S9 records All data before the first S1 record is ignored Thereafter all records must be S1 type until the S9 record terminates data transfer An S record format module may contain S records of the following types 50 The header record for each block of S records The code data field may contain any descriptive information identifying the following block of S records The address field is normally zeroes 51 A record containing code data and the 2 byte address at which the code data is to reside S2 S8 Not applicable to EVBU S9 A termination record for a block of S1 records The address field may optionally contain the 2 byte address of the instruction to which control is to be passed If not specified the first entry point specification encountered in the object module input will be used There
87. st of feed thru holes with cut traces on the PCB solder side Diode jumper D4 feed thru holes do not include a cut trace 1 1 1 1 2 2 2 2 1 1 lt gt 2 2 D1 D2 D3 D4 If the MC68HCOSTI real time clock battery backup feature is required you must cut the D1 D3 feed thru hole cut traces on the PCB solder side and install the following user supplied components on the PCB component side as follows D1 1N4001 diode D2 134148 diode D3 1N4148 diode D4 134148 diode jumper wire or resistor application dependent A user supplied 3 0 Vdc 25 uA battery is connected to the EVBU battery connector feed thru holes designated and for battery backup purposes as shown below OO M68HC11EVBU D 2 15 HARDWARE PREPARATION AND INSTALLATION AA MOTOROLA The type of battery selected for connector P3 will affect the choice of the component diode jumper wire or resistor that will be installed in location D4 Refer to the MC68HC68T1 data sheet and battery manufacturer recommendations for additional details Refer to the parts list contained in Chapter 6 for the battery connector P3 and diode jumpers D1 D4 component descriptions 24 2 Test Points TP1 TP6 Test points TP1 TP6 shown below are provided for the user supplied MC68HC68T1 device installed in socket location U5 These test point consists of six feed thru holes If desired you can install a single pin header post Aptronics 929705 01 01 in each feed thru hole
88. t computer to the EVBU As the EVBU monitor processes only valid S record data it is possible for the monitor to hang up during a load operation If an S record starting address points to an invalid memory location the invalid address message error addr xxxx is displayed on the terminal CRT xxxx invalid address Examples gt LOAD T lt CR gt LOAD command entered to download data from host computer done to EVBU via terminal port gt gt LOAD T lt CR gt LOAD command entered error addr E000 Invalid address message gt S records must be downloaded into RAM or EEPROM Refer to paragraph 4 8 DOWNLOADING PROCEDURES for additional information pertaining to the use of the LOAD command Refer to paragraph 4 4 2 Alternate Baud Rates for information pertaining to slower baud rates which are required when downloading directly to EEPROM M68HC11EVBU D 4 21 OPERATING INSTRUCTIONS MOTOROLA MD Memory Display 4 6 10 Memory Display MD lt addressl gt lt address2 gt where lt address1 gt Memory starting address optional lt address2 gt Memory ending address optional The MD command lets you display a block of user memory beginning at address1 and continuing to address2 If address2 is not entered 9 lines of 16 bytes are displayed beginning at address If addressl is greater than address2 the display defaults to the first address If no addresses are specified 9 lines of 16 bytes are displayed near th
89. te Subroutine 4 6 6 Execute Subroutine CALL lt address gt where address starting address where user subroutine begins The CALL command allows the user to execute a user subroutine program Execution starts at the current program counter PC address location unless a starting address is specified Two extra bytes are placed onto the stack before the BUFFALO monitor calls the subroutine so that the first unmatched return from subroutine RTS encountered will return control back to the monitor program Thus any user subroutine can be called and executed via the monitor program Program execution continues until an unmatched RTS is encountered a breakpoint is encountered or the EVBU reset switch S1 is activated pressed EXAMPLE PROGRAM for CALL G P and STOPAT command examples gt 5 0100 CR 0100 STX SFFFF gt LDAA 44 lt CR gt 86 44 0102 STX SFFFF gt STAA 01FC lt CR gt B7 01 FC 0105 5 SFFFF gt NOP lt CR gt 01 0106 STX SFFFF gt NOP lt CR gt 01 0107 STX SFFFF gt NOP lt CR gt 01 0108 STX SFFFF gt RTS lt CR gt 39 0109 STX SFFFF gt CTRL M68HC11EVBU D 4 17 OPERATING INSTRUCTIONS CALL Example gt CALL 0100 lt CR gt P 0100 Y DEE gt 4 18 E X F4FF 44 AA MOTOROLA Execute Subroutine Execute program subroutine B F E C DO S 0047 Displays register status at time RTS encountered except P register contain
90. the assembler are as follows numerical values are assumed to be hexadecimal Therefore no base designators e g hex 96 binary etc are allowed Operands must be separated by one or more space or tab characters Any characters after a valid mnemonic and associated operands are assumed to be comments and are ignored Addressing modes are designated as follows Immediate addressing is designated by preceding the address with a sign Indexed addressing is designated by a comma The comma must be preceded a one byte relative offset even if the offset is 00 and the comma must be followed by an X or Y designating which index register to use e g LDAA 0 Direct and extended addressing is specified by the length of the address operand 1 or 2 digits specifies direct 3 or 4 digits specifies extended Extended addressing can be forced by padding the address operand with leading zeros Relative offsets for branch instructions are computed by the assembler Therefore the valid operand for any branch instruction is the branch if true address not the relative offset M68HC11EVBU D 4 35 OPERATING INSTRUCTIONS AA MOTOROLA When a new source line is assembled the assembler overwrites what was previously in memory If no new source line is submitted or if there is an error in the source line then the contents of memory remain unchanged Four instruction pairs have the same opcode so disassembly will display the foll
91. vice are as follows e Full clock features seconds minutes hours AM PM day of week date month year 0 99 auto leap year e 32 word by 8 bit RAM e Direct interface to Motorola serial peripheral interface SPI Minimum time keeping voltage 2 2 V e Burst mode for reading writing successive addresses in clock or RAM e Selectable crystal or 50 60 Hz line input Binary coded decimal BCD data contained in registers e Buffered clock output for driving CPU clock timer colon or liquid crystal display LCD backplane Power on reset with first time up flag Freeze circuit eliminates software overhead during a clock read Three independent interrupt modes alarm periodic or power down sense e CPU reset output provides orderly power up down e Watchdog circuit Refer to the MC68HC68T1 Real Time Clock plus RAM with Serial Interface data sheet MC68HCO6S8TI D for additional device information In addition to the MC68HC68T1 circuitry diode jumpers D1 D4 and test points TP1 TP6 are also included The following paragraphs describes the purposes of the diode jumpers and test points in conjunction with the MC68HC68T1 device installed in socket location U5 2 14 M68HC11EVBU D AA MOTOROLA HARDWARE PREPARATION AND INSTALLATION 241 Diode Jumpers D1 D4 Diode jumpers D1 D4 shown below are provided on the EVBU for the real time clock battery backup operations The diode jumpers D1 D2 and D3 consi
92. y In order to display an instruction the machine code is disassembled and the instruction mnemonic and operands are displayed All valid opcodes are converted to assembly language mnemonics All invalid opcodes are displayed on the terminal CRT as ILLOP The syntax rules for the assembler are as follows a All numerical values are assumed to be hexadecimal Therefore no base designators e g hex binary etc are allowed b Operands must be separated by one or more space or tab characters c Any characters after a valid mnemonic and associated operands are assumed to be comments and are ignored Addressing modes are designated as follows a Immediate addressing is designated by preceding the address with a sign b Indexed addressing is designated by a comma The comma must be preceded a one byte relative offset even if the offset is 00 and the comma must be followed by an X or Y designating which index register to use e g LDAA 0 c Direct and extended addressing is specified by the length of the address operand 1 or 2 digits specifies direct 3 or 4 digits specifies extended Extended addressing can be forced by padding the address operand with leading zeros d Relative offsets for branch instructions are computed by the assembler Therefore the valid operand for any branch instruction is the branch if true address not the relative offset When a new source line is assembled the assembler overwrites wh

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