UNO-4678 User Manual
Contents
1. 25 v Table of Contents 5 A 6 A 7 8 9 Appendix 1 Ethernet RJ 45 Connector 1 2 25 Power Screw Terminal 26 Figure A 1 Power Connector Pin Assignments 26 PS 2 Keyboard and Mouse Connector 27 Table A 8 Keyboard amp mouse pin assignments 27 USB Connector 08 1 08 2 27 Table A 9 USB connector pin assignments 27 VGA Display 28 Table A 10 VGA adaptor cable pin assignment 28 Watchdog Timer Programming 30 UNQO 46 8 ttm 30 UNO 4678 User Manual vi Overview This chapter provides an overview of UNO 4678 s specifications Sections include Introduction Hardware Specifications Safety Precautions Chassis Dmensions Packing List Chapter 1 Overview 1 1 Introduction UNO 4678 is an embedded Application Ready Platform ARP that can shorten your development time and offers rich networking interfaces to fulfill extensive needs in different projects Advantech Universal Net work Controller is designed to be a total solution for network enabled Application Ready Platforms Leveraging field approved and worldwide approved real time OS tech nology Advantech UNO 4678 series provides a Windows CE NET and2. sss 12 Figure 2 3 RS 422 485 jumper setting 12 Figure 2 4 R S 232 jumper setting sss 12 2 2 5 Auto Flow Control amp Master Slave Modes 12 2 2 6 Termination Resistor JP1 JP8 12 LAN Ethernet Connector eene 13 Power Input eco 13 PS 2 Keyboard and Mouse Connector 13 USB Connector iu reete testen ind 13 VGA Display Connector sese 14 Reset Butto o eret rta hes Cen 14 10 Inserting a CompactFlash 16 Connecting Power cs ecce tee tetto ittis 16 Installing a Hard Disk esse 16 BIOS Setup and System Assignments 17 System Settings and Pin Assignments 20 UNO 4678 System I O amp Interrupt Assignments 20 Table 1 UNO 4678 System I O 20 Table A 2 UNO 4678 Interrupt Assignments 21 UNO 4678 System I O amp Interrupt Assignments 22 Table A 3 UNO 4678 System I O 22 Table A 4 UNO 4678 Interrupt Assignments 23 RS 232 422 485 9pin Serial Port COM1 COM2 24 Table A 5 RS 232 422 485 pin assignments 24 RS 232 422 485 5 pin Serial Port 8 25 Table A 6 RS 232 422 485 pin assignments
3. Initial Setup This chapter introduces how to initial ize the UNO 4678 Sections include Inserting a CompactFlash Card Conneting Power Connecting a Hard Disk BIOS Setup and System Assignments Chapter 3 Initial Setup 3 1 Inserting a CompactFlash Card UNO 4678 provides one CompactFlash slot Following is the procedure for the installing a CompactFlash card Slot CN7 Please follow these steps carefully 1 2 3 4 Remove the power cord Unscrew the screws from the top cover of UNO 4678 Remove the top cover Plug a CompactFlash card with your OS and application program into a CompactFlash card slot on board Screw back the top cover with screws NOTE CompactFlash disk CN7 is Second IDE and HDD CN5 is Primary IDE 3 2 Connecting Power Connect the UNO 4678 to a 9 36 V DC power source The power source can either be from a power adapter or an in house power source 3 3 Installing a Hard Disk Please follow these steps to install a hard disk into the UNO 4678 1 2 3 4 7 Remove the power cord Unscrew the screws from the top cover of UNO 4678 Remove the top cover Install the HDD in HDD bracket and screw on the HDD with the four screws Put HDD extension kit buffer on down cover of UNO 4678 and put HDD extension kit on four buffers and screw on it Connect the IDE flat cable to IDE connector CN5 then connect the other side of the connector to the hard disk S
4. UNO 4678 Intel Celeron M Fanless Box PC with 3 x LAN 8 x COM PC 104 User Manual Copyright This document is copyrighted 2009 All rights are reserved The origi nal manufacturer reserves the right to make improvements to the products described in this manual at any time without notice No part of this manual may be reproduced copied translated or transmit ted in any form or by any means without the prior written permission of the original manufacturer Information provided in this manual is intended to be accurate and reliable However the original manufacturer assumes no responsibility for its use nor for any infringements upon the rights of third parties that may result from such use Acknowledgements Intel Pentium and Celeron are registered trademarks of Intel Corp Microsoft Windows and MS DOS are registered trademarks of Microsoft Corp All other product names or trademarks are properties of their respective owners Support For more information on this and other Advantech products please visit our websites at http www advantech com For technical support and service please visit our support website at http www advantech com support This manual is for UNO 4678 Part No 2003467801 2nd Edition Printed in Taiwan May 2009 UNO 4678 User Manual ii Product Warranty 2 years Advantech warrants to you the original purchaser that each of its prod ucts will be free from defects in mat
5. DIN connector to two 6 pin mini DIN connectors for PS 2 keyboard and PS 2 mouse connection Please refer to Appendix A 7 2 6 USB Connector The UNO 4678 provides two USB interface connectors which provide complete Plug amp Play and hot swapping for up to 127 external devices The USB interface complies with USB UHCI Rev 1 1 compliant of UNO 4678 The USB interface complies with USB UHCI Rev 2 0 com pliant of UNO 4678 The USB interface can be disabled in the system BIOS setup Please refer to Appendix A 8 for its pin assignments Note It is recommended that a CD ROM attached by USB is used to install Windows or other operat ing systems 13 Chapter 2 2 7 VGA Display Connector The UNO 4678 provides a VGA controller Chipset VIA Twister chip with Integrated Savage4 2D 3K Video Accelerator for a high resolution VGA interface It supports up to 1280 x 1024 32bpp 60Hz 1024 x 768 32bpp 85Hz and support 8 16 32 MB frame buffer with system memory The UNO 4678 provides a VGA controller Intel 855 852 GME supports a single 1 5V accelerated graphics port interface for a high resolution VGA interface It supports CRT Mode 1280 x 1024 32bpp 60Hz 1024 x 768 32bpp 85Hz LCD Simultaneous Modes 1280 1024 16bpp 60Hz 1024 x 768 16bpp 60Hz and up to 32 MB shared memory 2 8 Reset Button Press the Reset button on the front panel to activate the reset function UNO 4678 User Manual 14
6. NMI Parity error detected IRQ 0 Interval timer IRQ 1 Keyboard IRQ 2 Interrupt from controller 2 cascade IRQ 3 Free IRQ 4 Free IRQ 5 Free IRQ 6 Diskette controller FDC IRQ 7 Free IRQ 8 Real time clock IRQ 9 Free IRQ 10 Free IRQ 11 Free IRQ 12 PS 2 mouse IRQ 13 INT from co processor IRQ 14 Primary IDE IRQ 15 Secondary IDE for CompactFlash 23 Appendix RS 232 422 485 Serial Port COM1 COM2 12345 6789 Table A 5 RS 232 422 485 assignments Pin RS 232 RS 422 RS 485 1 DCD Tx Data 2 Rx Data 3 Tx Rx 4 DTR Rx 5 GND GND GND 6 DSR 7 RTS 8 CTS 9 RI UNO 4678 User Manual 24 4 RS 232 422 485 5 Serial Port 3 8 Table A 6 RS 232 422 485 assignments Pin RS 232 RS 422 RS 485 1 Rx Data 2 Tx Tx Data 3 RTS Rx 4 CTS Rx 5 GND GND GND 5 Ethernet RJ 45 Connector LAN1 LAN2 Table A 7 Ethernet RJ 45 connector pin assignments Pin 10 100Base T Signal Name XMT XMT RCV NC NC RCV NC OINI gt 25 A 6 Power Screw Terminal PWR FAULT VIN VBAT GND RLP2 RLP1 9 36Voc Power Input 2 9 36V Power Input 4 Figure 1 Power Connector Pin Assignments Pin Sig
7. a fully completed Repair and Replacement Order Card and a photocopy proof of purchase date such as your sales receipt in a shippable container A prod uct returned without proof of the purchase date is not eligible for warranty service Step 5 Write the RMA number visibly on the outside of the package and ship it prepaid to your dealer iii This product has passed the CE test for environmental specifications Test conditions for passing included the equipment being operated within an industrial enclosure In order to protect the product from being damaged by ESD Electrostatic Discharge and EMI leakage we strongly recom mend the use of CE compliant industrial enclosure products FCC Class A This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interfer ence when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Technical Support and Assistance Step 1 Visit the Advantech web site at www adva
8. Use a grounding wrist strap at all times Place all electronic components on a static dissipative surface or in a static shielded bag Attention If DC voltage is supplied by an external circuit please put a protection device in the power sup ply input port UNO 4678 User Manual 6 1 4 Chassis Dimensions Figure 1 1 Chassis Dimensions 7 Chapter 1 1 5 Packing List The accessory package of UNO 4678 contains the following items A UNO 4678 B 2 x rack mounting kit C 8 x screw for rack mount kit D UNO series Driver and Utility CD ROM E Keyboard Mouse PS 2 cable F IDE cable for 2 5 HDD G 2 5 HDD expansion kit 8 screws and 4 HDD expansion kit buffers UNO 4678 User Manual 8 Hardware Functionality This chapter shows how to setup the UNO 4678 s hardware functions including connecting peripherals set ting switches and indicators Sections include Introduction RS 232 422 485 Interface LAN Ethernet Connector Power Connector PS 2 Mouse and Keyboard Connector USB Connector VGA Display Connector Reset Button Chapter 2 Hardware Functionality 2 1 Introduction The following two figures show the connectors on UNO 4678 The fol lowing sections give you detailed information about function of each peripheral UNO 4678 Figure 2 1 Front Panel of UNO 4678 Table 2 1 LED Definition Item LED S
9. Windows XP Embedded ready solution and supports several standard networking interfaces such as Ethernet RS 232 422 485 and more Because of its openness great expansion capability and reliable design fanless and diskless the UNO 4678 series are ideal embedded plat forms for implementing custom applications for diverse applications Open Architecture Designed for Automation For applications demanding customized control an UNO 4678 that uses more flexible off the shelf technology is a better option UNO 4678 uses off the shelf components such as an x86 processor an Ethernet chip set CompactFlash and DRAM At the same time the UNO 4678 unit can broadcast the process data through the Ethernet and share the data with operators and managers By using off the shelf components machine builders can customize the control scheme they use for other machines that require multiple inputs optimized control or Ethernet communica tion So UNO 4678 offers the I O connectivity of PCs with options like 3 x 10 100Base T Ethernet 8 x RS 232 422 485 2 x USB CompactFlash and VGA interfaces for display panels An Industry Proven Design Industrial and mobile applications require controllers with high vibration specifications and a wide temperature range Machines or controllers in light industrial environments also require flexible and stable mounting Many machine builders underestimate the need for a more rugged con troller because their end ap
10. DD DB15 VGA connector Communications Serial Ports Eight RS 232 422 485 ports include Serial Port Speed RS 232 RS 422 485 LAN USB Ports UNO 4678 UNO 4678 Environment Humidity Operating Temperature Shock Protection CompactFlash HDD Vibration Protection CompactFlash HDD 2 DB 9 connectors with 9 wired RS 232 6x screw terminals with 5 wired RS 232 Automatic RS 485 data flow control 2000 surge protection amp isolation 50 230 4 kbps 50 921 6 kbps Max 3 x 10 100Base T RJ 45 ports 2 x USB UHCI Rev 1 1 compliant 2 x USB UHCI Rev 2 0 compliant 95 40 C non condensing 10 50 C 14 122 IEC 68 2 27 50 G 0 wall mount half sine 11 ms 20 G wall mount half sine 11 ms IEC 68 2 64 Random 1 Oct min Lhr axis 2 Grms 5 500 Hz 0 5 Grms 5 500 Hz 5 Chapter 1 1 3 Safety Precautions The following messages informs how to make each connection In most cases you will simply need to connect a standard cable Warning Always disconnect the power cord from your chassis whenever you are working on it Do not connect while the power is on A sudden rush of power can damage sensitive electronic compo nents Only experienced electronics personnel should open the chassis Caution Always ground yourself to remove any static electric charge before touching UNO 4678 Mod e ern electronic devices are very sensitive to static electric charges
11. H OUT DX AL OUT DX AL MOV DX 2EH MOV AL 2BH OUT DX AL MOV DX 2FH IN AL DX AND AL OEFH Setbit 4 0 Pin 89 WDTO OUT DX AL MOV DX 2EH MOV AL 07H point to Logical Device Number Reg OUT DX AL MOV DX 2FH MOV AL 08H select logical device 8 OUT DX AL MOV DX 2EH MOV AL 30H Set watch dog activate or inactivate UNO 4678 User Manual 30 OUT DX AL MOV DX 2FH MOV AL 01H 01 activate 00 inactivate OUT DX AL MOV DX 2EH MOV AL FS5H Setting counter unit is second OUT DX AL MOV DX 2FH MOV AL 00H OUT DX AL MOV DX 2EH MOV AL F6H OUT DX AL MOV DX 2FH MOV AL 05H Set 5 seconds OUT DX AL MOV DX 2EH MOV AL AAH OUT DX AL 31 Appendix UNO 4678 User Manual 32
12. crew back the top cover with screws UNO 4678 User Manual 16 3 4 BIOS Setup and System Assignments UNO 4678 adopts Advantech s SOM 4486 CPU module Further infor mation about the SOM 4486 CPU module can be found in SOM 4486 s user s manual You can find this manual on the UNO 4678 s driver and utility CD ROM Please note that you can try to LOAD BIOS DEFAULTS from the BIOS Setup manual if the UNO 4678 does not work properly 17 Chapter 3 UNO 4678 User Manual 18 Appendix System Settings and Pin Assignments Appendix A System Settings and Pin Assignments A 1 UNO 4678 System I O amp Interrupt Assignments Table 1 UNO 4678 System I O Ports Address Range Device 000 01F DMA controller slave 020 03F Interrupt controller 1 master 040 05F 8254 timer counter 060 06F 8042 keyboard controller 070 07F Real time clock non maskable interrupt NMI mask 080 09F DMA page register 0 Interrupt controller 2 slave 0CO O0DF DMA controller master OFO Clear math co processor OF 1 Reset math co processor OF8 OFF Math co processor 1F0 1F8 1st fixed disk 278 27 Reserved 380 38F SDLC bisynchronous 2 3A0 3AF Bisynchronous 1 3BO 3BF Monochrome display 3C0 3CF Reserved 3D0 3DF Color graphics monitor adapter 3F0 3F7 Diskette controller 443 Watchdog timer UNO 4678 User Manual 20 Table A 2 UNO 4678 Interr
13. erials and workmanship for two years from the date of purchase This warranty does not apply to any products that have been repaired or altered by persons other than repair personnel authorized by Advantech or which have been subject to misuse abuse accident or improper instal lation Advantech assumes no liability under the terms of this warranty as a consequence of such events Because of Advantech high quality control standards and rigorous test ing most of our customers never need to use our repair service If an Advantech product is defective it will be repaired or replaced at no charge during the warranty period For out of warranty repairs you will be billed according to the cost of replacement materials service time and freight Please consult your dealer for more details If you think you have a defective product follow these steps Step 1 Collect all the information about the problem encountered For example CPU speed Advantech products used other hardware and software used etc Note anything abnormal and list any on screen messages you get when the problem occurs Step 2 Call your dealer and describe the problem Please have your man ual product and any helpful information readily available Step 3 If your product is diagnosed as defective obtain an RMA return merchandize authorization number from your dealer This allows us to process your return more quickly Step 4 Carefully pack the defective product
14. n the driver is always enabled and always in high or low status 2 2 6 Termination Resistor JP1 JP8 The onboard termination resistor 120 ohm for COMI COMS J8 can be used for long distance transmission or device matching Default Open COM Close A Enable TR for Data TX Close B Enable TR for RX UNO 4678 User Manual 12 2 3 LAN Ethernet Connector The UNO 4678 is equipped with a Realtek RTL8100 Ethernet LAN con troller and UNO 4678 is equipped with a Realtek RTL8139 Ethernet LAN controller which are fully compliant with IEEE 802 3u 10 100Base T CSMA CD standards The Ethernet port provides a standard RJ 45 jack on board and LED indicators on the front side to show its Link Green LED and Active Yellow LED status 2 4 Power Input The UNO 4678 comes with a Phoenix connector that carries 9 36 VDC external power input and features reversed wiring protection it will not cause any damage to the system by reversed wiring of ground line and power line Please refer to Appendix A 6 UNO 4678 supports two individual power inputs P1 P2 If the voltage of power input lt 9 it will switch to another power input and the FAULT LED will be enabled 2 5 PS 2 Keyboard and Mouse Connector The UNO 4678 provides a PS 2 keyboard and PS 2 mouse connector A 6 pin mini DIN connector is located on the front panel of the UNO 4678 The UNO 4678 comes with an adapter to convert from the 6 pin mini
15. nal Name VIN Power input 1 Range 9 36VDC VBAT power input 2 Range 9 36VDC GND Ground RLP1 Internal relay RLP2 Normal status Close Fail Status Open Note 1 UNO 4678 supports two individual power inputs VIN VBAT If the voltage of the power input 9 VDC it will switch to another power input and the FAULT LED will be enabled 2 RPL1 RPL2 is internal relay and can be used for remote monitor the standard mode is Close if one of input power got fail it will be Open UNO 4678 User Manual 26 A 7 PS 2 Keyboard and Mouse Connector O 2 Table A 8 Keyboard amp mouse pin assignments Pin Signal Name KB DATA MS DATA GND VCC KB Clock CNN gt MS Clock A 8 USB Connector USB1 USB2 Table A 9 USB connector pin assignments Pin Signal Name Cable Color 1 VCC Red 2 DATA White 3 DATA Green 4 GND Black 27 Appendix A 9 VGA Display Connector Table A 10 VGA adaptor cable pin assignment Pin Signal Name 1 Red 2 Green 3 Blue 4 NC 5 GND 6 GND 7 GND 8 GND 9 NC 10 GND 11 NC 12 NC 13 H SYNC 14 V SYNC 15 NC UNO 4678 User Manual 28 Appendix Programming the Watchdog Timer Appendix Watchdog Timer Program ming B 1 UNO 4678 Below is a sample of programming code for controlling the Watchdog Timer function MOV DX 2EH MOV AL 87
16. ntech com support where you can find the latest information about the product Step 2 Contact your distributor sales representative or Advantech s cus tomer service center for technical support if you need additional assistance Please have the following information ready before you call Product name and serial number Description of your peripheral attachments Description of your software OS version software etc A complete description of the problem The exact wording of any error messages UNO 4678 User Manual iv Chapter Chapter 2 2 2 NNNNNN Chapter Wo U92 WW Appendix 2 4 Contents 2 Introduction usce puce idees 2 Hardware Specifications sssssssssssses 4 Safety Precautions itecto 6 Chassis 0 1 1018 7 Figure 1 1 Chassis Dimensions eee 7 Packing List cie eee eer 8 Hardware Functionality 10 Introduction eec EE Figure 2 1 Front Panel of UNO 4678 Table 2 1 LED Definition Dios Figure 2 2 Panel eee RS 232 422 485 Interface COM1 COMS 2 2 1 16PCI954 UARTS with 128 byte standard 11 222 RS 422 485 detection sse 11 2 2 3 Automatic Data Flow Control Function for RS 485 11 2 2 4 RS 232 422 485 Selection
17. nux operating sys tem UNO 4678 also features pre built Microsoft Windows XP embedded or Windows CE solutions offering a pre configured image with optimized onboard device drivers Microsoft Windows CE and XP Embedded are compact highly efficient and real time operating systems that are designed for embedded systems without a HDD There is no need to waste time and energy on developing onboard device drivers or using the Platform Builder to build a custom Windows CE image they have all been done for the Advantech UNO 4678 series Through the built in runtime library and Software Development Kit SDK the UNO 4678 series leverages your existing Windows based programming skills to rap idly develop applications 3 Chapter 1 General Certifications Dimensions W x D x H Enclosure Mounting Power Consumption Power Input Weight OS Support System Hardware CPU Indicators Keyboard Mouse Memory Storage SSD HDD VGA UNO 4678 User Manual 1 2 Hardware Specifications CE FCC Class A 1U 440 x 220 x 44 mm 17 3 x 8 6 x 1 7 SECC Rack wall 24 W Typical Min 48 W 9 36 e g 24 V 2 A 3 6 kg Windows XP Embedded SP2 Windows 2000 XP Windows CE NET 5 0 Linux Celeron M 1 GHz Power Power input 1 Power input 2 Power fault IDE amp all serial port monitoring 1 x PS 2 512 MB DDR DRAM 1 x internal type CompactFlash slot Extension kit for one standard 2 5 H
18. plications are mounted in an industrial enclo sure UNO 4678 User Manual 2 Advantech UNO 4678 has a special design without the weaknesses of a standard PC No fan and no HDD prevent dust and vibration problems With a smart mechanical design UNO 4678 can meet 50 G shock Use CompactFlash card 2 G vibration Use CompactFlash card up to 50 C operating temperature and almost anything an industrial environment can demand Designed to Fit Comfortably Into Racks In completely new packaging UNO 4678 has standard 1U rack size as 440 x 220 x 44 mm W x Hx D could fit your rack You could easily mount UNO 4678 on rack and manage all UNOs in one rack and easily develop your application on rack Flexible Networking Options The Advantech UNO 4678 offers two ways to connect to a network Ethernet and Modem The three built in Ethernet ports provide high speed networking capability up to 100 Mbps And through UNO 4678 s isolated serial COM ports you could link industrial modems to offer the most popular and easiest networking method by PSTN Not only 8 chan nel serial COM port has 3 serial type but also provides surge and isolation protection up to 2 000V pc protecting your system from abrupt high volt age attack and accident or damage in harsh environments Popular Operating Systems and Rapid Application Development The Advantech UNO 4678 supports the popular off the shelf Microsoft Windows 2000 NT XP operating systems and the Li
19. tatus Description 1 PWR On System power is on Off System power is off 2 P1 On Power input 1 is active Off Power input 1 is inactive 3 P2 On Power input 2 is active Off Power input 2 is inactive 4 Fault On Power input 1 or Power input 2 have failed Off Power input 1 and Power input 2 are active 5 IDE On Data being received transmitted on IDE Off No data being received transmitted on IDE 6 Ethernet data being received transmitted Off No data being received transmitted LINK On 10 100Mbps Network links Off Invalid 10 100 Mbps Network link 7 Tx Port N On Serial port data being transmitted 1 8 Off No data being transmitted Rx Port N On Serial port data being received N 1 8 Off No data being received UNO 4678 User Manual 10 Move a eo a 12348 12345 RS 232 422 485 Isolated ted A LIS Serial Port COM3 8 Serial Port COM1 COM2 VGA Ethernet Connector misi T Chassis GND Figure 2 2 Rear Panel 2 2 RS 232 422 485 Interface COM1 COMB The UNO 4678 offers eight RS 232 422 485 serial communication inter face ports COMI and COMS Please refer to Appendix A 3 amp A 4 for their pin assignments The default settings of COMI through COMS are all RS 232 2 2 1 16PCI954 UARTS with 128 byte standard Advantech UNO 4678 comes with 16PCI954 UARTS containing 128 byte FIFOs 2 2 2 RS 422 485 detection In RS 422 485 mode UNO 4678 automatically detects signals to ma
20. tch RS 422 or RS 485 networks No jumper change required 2 2 3 Automatic Data Flow Control Function for RS 485 In RS 485 mode UNO 4678 automatically detects the direction of incoming data and switches its transmission direction accordingly So no handshaking signal e g RTS signal 15 necessary This lets you conve niently build an RS 485 network with just two wires More importantly application software previously written for half duplex RS 232 environ ments can be maintained without modification 11 Chapter 2 2 2 4 RS 232 422 485 Selection 8 support RS 232 RS 422 and RS 485 interfaces The system detects RS 422 or RS 485 signals automatically in RS 422 485 mode To select between RS 422 485 and RS 232 for COMI COMS adjust JP3 JP10 Jumper settings for RS 422 485 interface JP3 JP10 HEHR A B C D Figure 2 3 RS 422 485 jumper setting Jumper settings for RS 232 interface Default setting JP3 JP10 5 5 OD Figure 2 4 RS 232 jumper setting 2 2 5 Auto Flow Control amp Master Slave Modes You can set the Auto Flow Control mode of RS 485 or Master Slave mode of RS 422 by using the SW2 DIP switch for each RS 422 485 port In RS 485 if the switch is set to Auto the driver automatically senses the direction of the data flow and switches the direction of transmission No handshaking is necessary In RS 422 if DIP switch is set to O
21. upt Assignments Interrupt No Interrupt Source NMI Parity error detected IRQ 0 Interval timer IRQ 1 Keyboard IRQ 2 Interrupt from controller 2 cascade IRQ 3 Free IRQ 4 Free IRQ5 Free IRQ 6 Diskette controller FDC IRQ 7 Free IRQ 8 Real time clock IRQ 9 Free IRQ 10 Free IRQ 11 Reserved for watchdog timer IRQ 12 PS 2 mouse IRQ 13 INT from co processor IRQ 14 Primary IDE IRQ 15 Secondary IDE for CompactFlash 21 2 UNO 4678 System I O amp Interrupt Assignments Table UNO 4678 System I O Ports Address Range Device 000 01F DMA controller slave 020 03F Interrupt controller 1 master 040 05F 8254 timer counter 060 06F 8042 keyboard controller 070 07F Real time clock non mask interrupt NMI 080 09F DMA page register 0 0 0 Interrupt controller 2 slave 0 0 0 DMA controller master OFO Clear math co processor OF 1 Reset math co processor OF8 OFF Math co processor 1F0 1F8 1st fixed disk 278 27 Reserved 380 38F SDLC bisynchronous 2 3A0 3AF Bisynchronous 1 3B0 3BF Monochrome display 3C0 3CF Reserved 3D0 3DF Color graphics monitor adapter 3F0 3F7 Diskette controller UNO 4678 User Manual 22 Table A 4 UNO 4678 Interrupt Assignments Interrupt No Interrupt Source
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