ROCKY-5ST86HV Ver 2.x 486 DX66 with SVGA CPU Board @Copyright 1999 All Rights Reserved. Manual first edition November. 15,1999 The information in this document is subject to change without prior notice in order to improve reliability, design and function and does not represent a commitment on the part of the manufacturer. In no event will the manufacturer be liable for direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the product or documentation, even if advised of the possibility of such damages. This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic, or other means in any form without prior written permission of the manufacturer. Trademarks ROCKY-5ST86HV is registered trademarks of ICP Electronics Inc., IBM PC is a registered trademark of International Business Machines Corporation. Intel is a registered trademark of Intel Corporation. AMI is registered trademarks of American Megatrends, Inc. Other product names mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks of their respective companies. Support Any questions regarding the content of this manual or related issues can be e-mailed to us directly at : Support@icpacquire.com.tw 3.6 External Power Connector (CN5) ................................................ 17 Contents 3.7 VGA Connector (CN17) .............................................................. 17 3.8 CPU Fan Connector (CN10) ........................................................ 18 Contents......................................................................... 1 3.9 PC/104 Connection Bus (CN13, CN14) ...................................... 18 3.10 PS/2 Mouse Connector (CN9)..................................................... 19 1. Introduction ............................................................... 3 3.11 Keyboard Connector (CN15).......................................................19 1.1 Specifications.................................................................................4 3.12 External Keyboard Connector (CN4)........................................... 19 1.2 What You Have..............................................................................5 3.13 IrDA Infrared Port (CN8)............................................................. 20 2. Jumper Setting ......................................................... 6 4. AMI BIOS Setup..................................................... 21 2.1 ROCKY-5ST86HV's Layout.........................................................6 4.1 Getting Started..............................................................................21 2.2 Unpacking Precautions...................................................................8 4.2 Standard CMOS Setup.................................................................23 2.3 PS/2 Mouse (JP2)........................................................................... 9 4.3 Advanced CMOS Setup ............................................................... 24 2.4 Watchdog (JP3)..............................................................................9 4.4 Advanced Chipset Setup .............................................................. 26 2.5 DiskOnChip™ Flash Disk (JP2) ................................................... 9 4.5 Power Management Setup............................................................ 27 2.6 Clear CMOS Setup (JP10) ........................................................... 10 4.6 Peripheral Setup...........................................................................29 2.7 CPU Clock Setting ....................................................................... 10 Appendix A. Watch-Dog Timer ................................. 31 2.8 PCI Clock Divisor ........................................................................ 10 3. Connection .............................................................. 11 Appendix B. I/O Information..................................... 33 3.1 Floppy Disk Drive Connector (CN1) ........................................... 12 3.2 IDE Disk Drive Connector (CN18,CN19) ................................... 13 3.3 Switches, Indicators (CN3) .......................................................... 15 3.4 Parallel Port (CN2).......................................................................15 3.5 Serial Port (CN6, CN7,CN11,CN12) ........................................... 16 1 2 1.1 Specifications 1 CPU Embedded SGS Thomson DX-66 STPC Client System bus ISA connector Introduction System Two 72-pin SIMM socket supports 8,16 or 32MB EDO/FPR DRAM memory Enhanced IDE Supports up to four EIDE devices with BIOS auto-detect Welcome to the ROCKY-5ST86HV 486 DX66 with SVGA CPU function Interface Board. The ROCKY-5ST86HV board is an all-in-one CPU board. Floppy disk It offers all the functions that a full-fledged computer needs. Supports up to two floppy disk drives drive interface In addition, the ROCKY-5ST86HV provides SVGA display Four RS-232 ports with 16C550 UART (or compatible) with 16-byte FIFO buffer. Support up to 115.2Kbps. Ports controller on board, which can supply CRT resolutions up to Serial ports can be individually configured to COM1, COM2,COM3, 1024x768@64K colors. COM4 or disabled. This board has a built-in DiskOnChip™(DOC) Flash Disk Socket Bi-directional Configurable to LPT1, LPT2, LPT3 or disabled. Supports for embedded applications. The DOC Flash Disk is 100% EPP/ECP/SPP. parallel Port software compatible with hard disk. Users can use any DOS Supports Serial Infrared (SIR) and Amplitude Shift Keyed command without any extra software utility. The DOC is currently IrDA port IR (ASKIR) interface available from 2MB to 144MB. Can be set by 1~255 seconds intervals. Reset or NMI is Watch-dog generated when CPU does not periodically trigger the timer timer. Completes backward compatibility to VGA and SVGA , VGA display supports CRT resolutions up to 1024 x 768 @ 64K colors , 512KB – 4MB share memory , set in BIOS The DiskOnChip™ compatible 32-pin dip socket is Flash disk provided for application of Flash Disk (DiskOnChip™) which let users use the Flash Disk in DOS command socket without any extra software utility. Keyboard / Mouse Supports standard PC/AT keyboard and PS/2 mouse connector Power +5V @1.4A consumption Operating 0 ~ 55 C ( CPU needs Cooler) ° ° temperature 3 4 1.2 What You Have 2 In addition to this User's Manual, the ROCKY-5ST86HV package includes the following items: ROCKY-5ST86HV 486DX66 with SVGA CPU board • Jumper Setting RS-232 cable x 3 • Printer cable x 1 • This chapter describes how to install the ROCKY-5ST86HV. At FDD cable x 1 • first, the layout of ROCKY-5ST86HV is shown, and the unpacking information that you should be careful is described. HDD cable x 2 • The jumpers setting instructions of CMOS and DiskOnChip Flash Disk are also included. If any of these items are missing or damaged, contact the dealer from whom you purchased this product. Keep the shipping materials and carton in case you want to ship or store the product in the future. 2.1 ROCKY-5ST86HV's Layout 5 6 2.2 Unpacking Precautions Some components on ROCKY-5ST86HV SBC are very sensitive to static electric charges and can be damaged by a sudden rush of power. To protect it from unintended damage, be sure to follow these precautions: � Ground yourself to remove any static charge before touching your ROCKY-5ST86HV SBC. You can do it by using a grounded wrist strap at all times or by frequently touching any conducting materials that is connected to the ground. � Handle your ROCKY-5ST86HV SBC by its edges. Don’t touch IC chips, leads or circuitry if not necessary. � Do not plug any connector or jumper while the power is on. 7 8 2.3 PS2 Mouse (JP2) 2.6 Clear CMOS Setup(JP10) If you want to disable PS/2 mouse, you should remove the If you want to clear the CMOS Setup (for example: if you forgot jumper on JP2. the password, you should clear the setup and then set the password again.), you should close the JP10 about 3 seconds, then open again. Now, the password has been cleared from � JP2: PS2 MOUSE your CMOS. Close Enable Open Disable � JP10:CLEAR CMOS JUMPER 1-2 NORMAL 2-3 CLEAR CMOS 2.4 Watchdog (JP3) If you want to disable the function of watchdog, you should close the pin.1 and pin.2. For detailed information on Watch-Dog Timer, please refer to Appendix A. 2.7 CPU Clock Setting(JP12,13,14) � JP3: Watchdog These jumpers are used to select the operating clock of CPU. 1-2 Disable Because the CPU is mounted on board, the factory setting will 2-3 Enable be made according to the CPU used. � JP12,13,14: CPU Clock Setting 12 13 14 CPU CLOCK 2.5 DiskOnChip™ Flash Disk (JP8) Close Open Open 25 MHZ The DiskOnChip™ Flash Disk Chip (DOC) is produced by M- Open Close Close 50 MHZ Systems. Because the DOC is 100% software compatible to Open Close Open 60 MHZ hard disk and DOS, users don‘t need any extra software utility. It Open Open Close 66 MHZ is just “plug and play”, easy and reliable. Right now the DOC is Open Open Open 75 MHZ available from 2MB to 144MB. The DiskOnChip will only share 8KB memory address. 2.8 PCI Clock Divisor(JP15) JP8 : DiskOnChip Memory Address Setting • JP8 This jumper is used to select the operating clock of PCI device. Address 1-2 3-4 5-6 The default setting will be the HOST clock divided by three. In C8000 – C9FFF OPEN CLOSE CLOSE the case of 75Mhz HOST clock, the PCI clock is 25Mhz. CLOSE OPEN CLOSE D0000 – D1FFF D8000 – D9FFF OPEN OPEN CLOSE � JP15: PCI Clock Divisor Close HCLK/2 Open HCLK/3 9 10 3.1 Floppy Disk Drive Connector (CN1) 3 The ROCKY-5ST86HV board comes equipped with a 34-pin daisy-chain drive connector cable which can support up to two floppy drives. The detailed pin assignment of the connector is specified as below: Connection PIN NO. DESCRIPTION PIN NO. DESCRIPTION 1 GROUND 2 REDUCE WRITE This chapter describes how to connect peripherals, switches and 3 GROUND 4 N/C indicators to the ROCKY-5ST86HV board. 5 GROUND 6 N/C 7 GROUND 8 INDEX # Table of Connectors 9 GROUND 10 MOTOR ENABLE A# LABEL FUNCTION 11 GROUND 12 DRIVE SELECT B# 13 GROUND 14 DRIVE SELECT A# CN1 Floppy Disk Drive Connector 15 GROUND 16 MOTOR ENABLE B# CN2 Parallel Port CN3 COMB Connector 17 GROUND 18 DIRECTION# CN4 External K.B. Connector 19 GROUND 20 STEP# 21 GROUND 22 WRITE DATA# CN5 External Power Connector 23 GROUND 24 WRITE GATE# CN6 COM4 Connector CN7 COM3 Connector 25 GROUND 26 TRACK 0# 27 GROUND 28 WRITE PROTECT# CN8 IR Connector 29 GROUND 30 READ DATA# CN9 PS/2 Mouse Connector 31 GROUND 32 SIDE 1 SELECT# CN10 CPU FAN Connector 33 GROUND 34 DISK CHANGE# CN11 COM2 Connector CN12 COM1 Connector CN13 PC104-64 CN14 PC104-40 CN15 Keyboard Connector CN16 RESERVED CN17 VGA Connector CN18 IDE1 Connector CN19 IDE2 Connector 11 12 • CN19: IDE2 – Secondary IDE 3.2 IDE Disk Drive Connector (CN18,CN19) PIN NO. DESCRIPTION PIN NO. DESCRIPTION You can attach four IDE (Integrated Device Electronics) hard 1 RESET# 2 GROUND disk drives to the ROCKY-5ST86HV IDE controller. The IDE 3 DATA 7 4 DATA 8 supports the Ultra DMA/33 interface. 5 DATA 6 6 DATA 9 7 DATA 5 8 DATA 10 • CN18: IDE1 – Primary IDE 9 DATA 4 10 DATA 11 PIN NO. DESCRIPTION PIN NO. DESCRIPTION 11 DATA 3 12 DATA 12 1 RESET# 2 GROUND 13 DATA 2 14 DATA 13 3 DATA 7 4 DATA 8 15 DATA 1 16 DATA 14 5 DATA 6 6 DATA 9 17 DATA 0 18 DATA 15 7 DATA 5 8 DATA 10 19 GROUND 20 N/C 9 DATA 4 10 DATA 11 21 IDE DRQ 22 GROUND 11 DATA 3 12 DATA 12 23 IOW# 24 GROUND 13 DATA 2 14 DATA 13 25 IOR# 26 GROUND 15 DATA 1 16 DATA 14 27 IDE CHRDY 28 GROUND 17 DATA 0 18 DATA 15 29 IDE DACK 30 GROUND. DEFAULT 19 GROUND 20 N/C 31 INTERRUPT 32 N/C 21 IDE DRQ 22 GROUND 33 SA 1 34 N/C 23 IOW# 24 GROUND 35 SA 0 36 SA 2 25 IOR# 26 GROUND 37 HDD CS0# 38 HDC CS1# 27 IDE CHRDY 28 GROUND 39 HDD ACTIVE# 40 GROUND 29 IDE DACK 30 GROUND. DEFAULT 41 VCC 42 VCC 31 INTERRUPT 32 N/C 43 GND 44 VCC 33 SA 1 34 N/C 35 SA 0 36 SA 2 37 HDD CS0# 38 HDC CS1# 39 HDD ACTIVE# 40 GROUND 13 14 3.3 Switches, Indicators (CN3) 3.5 Serial Port (CN6, CN7,CN10,CN11) The connection of CN3 is illustrated as the following table for The ROCKY-5ST86HV offers four high speed NS16C550 reference. compatible UARTs with Read/Receive 16 byte FIFO serial ports. CN3: General connectors CN12: COM1 (9-pin D-SUB connector) • • PIN NO.DESCRIPTION CN11: COM2 (10-pin header) • BUZZER 1 BATTERY CN7: COM3 (10-pin header) • CON 2 VCC CN6: COM4 (10-pin header) • RESET 11 GND 9 RESET SW HDDLED 7 VCC PIN NO. DESCRIPTION 13 IDE LED 1 DATA CARRIER DETECT (DCD) KEYLOCK 8 KEYLOCK 10 GND 2 RECEIVE DATA (RXD) PIN 6,12: GND 3 TRANSMIT DATA (TXD) 4 DATA TERMINAL READY (DTR) 5 GROUND (GND) 6 DATA SET READY (DSR) 3.4 Parallel Port (CN2) 7 REQUEST TO SEND (RTS) This port is usually connected to a printer. The ROCKY- 8 CLEAR TO SEND (CTS) 5ST86HV includes an on-board parallel port accessed through a 9 RING INDICATOR (RI) 26-pin mini-pitched flat-cable connector CN2. PIN NO. DESCRIPTION PIN NO. DESCRIPTION 1 STROBE# 2 DATA 0 3 DATA 1 4 DATA 2 5 DATA 3 6 DATA 4 7 DATA 5 8 DATA 6 9 DATA 7 10 ACKNOWLEDGE 11 BUSY 12 PAPER EMPTY 13 PRINTER SELECT 14 AUTO FORM FEED# 15 ERROR# 16 INITALIZE 17 PRINTER SELECT LN# 18 GROUND 19 GROUND 20 GROUND 15 16 3.6 External Power Connector (CN5) 3.8 CPU Fan Connector (CN10) The ROCKY-5ST86HV has an on-board external power The ROCKY-5ST86HV provides an optional CPU cooling fan connector CN5. The extra power supply like ±12VDC and - connector which only presents when +12V power is supplied to 5VDC provided by CN5 will be passed to CN13 and CN14 and CN6. Please note that the ROCKY-5ST86HV's STPC chip has only for PC104 slot use. already installed a heat sink. However, while running under environment temperature above 60℃, users still have to add an 1 +5V additional CPU cooling fan. 2 +12V 3 -12V 1 +12V 4 GND 2 GND 5 GND 6 -5V 7 +12V 3.9 PC/104 Connection Bus (CN13, CN14) 8 +5V The ROCKY-5ST86HV's PC/104 expansion bus lets you attach any kind of PC/104 modules. There are two PC/104 connectors on this board: PC/104-64 and PC/104-40. 3.7 VGA Connector (CN17) ROCKY-5ST86HV's built-in 16-pin VGA connector can directly connect to your CRT monitor via the attached VGA cable. PIN DESCRIPTION PIN NO.DESCRIPTION NO. 1 RED 2 GREEN 3 BLUE 4 N/C 5 GROUND 6 GROUND 7 GROUND 8 GROUND CN13 : PC/104-64 CON A 9 N/C 10 GROUND 11 N/C 12 DDC DAT 13 HSYNC 14 VSYNC 15 DDCCLK CN14 : PC/104-40 CON B 17 18 IOCHCK# - 1 33 - GND GND - 40 20 - GND SD7 - 2 34 - RSTDRV SD15 - 39 19 - GNC SD6 - 3 35 - VCC SD14 - 38 18 - MASTER# SD5 - 4 36 - IRQ9 SD4 - 5 37 - -5V SD13 - 37 17 - VCC SD3 - 6 38 - DRQ2 SD12 - 36 16 - DRQ7 SD2 - 7 39 - -12V SD11 - 35 15 - DACK7# SD1 - 8 40 - ZWS SD0 - 9 41 - +12V SD10 - 34 14 - DRQ6 IOCHRDY - 10 42 - GND SD9 - 33 13 - DACK6# AEN - 11 43 - SMEMW# SD8 - 32 12 - DRQ5 LA19 - 12 44 - SMEMR# LA18 - 13 45 - IOW# MEMW - 31 11 - DACK5# LA17 - 14 46 - IOR# MEMR - 30 10 - DRQ0 SA16 - 15 47 - DACK3# LA17 - 29 9 - DACK0# SA15 - 16 48 - DRQ3 SA14 - 17 49 - DACK1# LA18 - 28 8 - IRQ14 SA13 - 18 50 - DRQ1 LA19 - 27 7 - IRQ15 SA12 - 19 51 - REFRESH# LA20 - 26 6 - IRQ12 SA11 - 20 52 - ISASYSCLK SA10 - 21 53 - IRQ7 LA21 - 25 5 - IRQ11 SA9 - 22 54 - IRQ6 LA22 - 24 4 - IRQ10 SA8 - 23 55 - IRQ5 LA23 - 23 3 - IOCS16 SA7 - 24 56 - IRQ4 SA6 - 25 57 - IRQ3 SBHE - 22 2 - MCS16 SA5 - 26 58 - DACK2 GND - 21 1 - GND SA4 - 27 59 - TC SA3 - 28 60 - ALE SA2 - 29 61 - VCC SA1 - 30 62 - OSC SA0 - 31 63 - GND GND - 32 64 - GND 3.10 PS/2 Mouse Connector(CN9) 3.13 IrDA Infrared Port (CN8) The 6-pin DIN connector allows users to connect PS/2 mouse . PIN NO. DESCRIPTION PIN NO. DESCRIPTION 1 MS DATA 1 VCC 2 N/C 2 FIR-RX 3 GROUND 3 IR-RX 4 VCC 4 GROUND 5 MS CLOCK 5 IR-TX 6 N/C 6 CIRRX 3.11 Keyboard Connector (CN15) The 6-pin DIN connector allows users to connect PS/2 keyboard. PIN NO. DESCRIPTION 1 KB DATA 2 N/C 3 GROUND 4 VCC 5 KB CLOCK 6 N/C 3.12 External Keyboard Connector (CN4) The 6-pin header allows users to connect keyboard. Note: users should make the cable by themselves. PIN NO. DESCRIPTION 1 KB CLOCK 2 KB DATA 3 N/C 4 GROUND 5 VCC 19 20 4 AMI BIOS Setup The ROCKY-5ST86HV uses the AMI PCI/ISA BIOS for system configuration. The AMI BIOS setup program is designed to provide maximum flexibility in configuring the system by offering various options which may be selected for end-user requirements. This chapter is written to assist you in the proper usage of these features. 4.1 Getting Started When choose Auto Configuration with Fail Safe Settings, it will load the minimized settings for Troubleshooting. The When powering on the system, the BIOS will enter the Power- performance should be very poor when use this setting. On-Self-Test (POST) routines. These routines will be executed for system test, initialization and system configuration verification. When choose Auto Configuration with Optimal Settings, it will After the POST routines are completed, the following message load optimized defaults for regular use. Choosing this setting will will appear: modify all applicable settings. " Hit DEL if you want to run SETUP" To access AMI PCI/ISA BIOS Setup program, press key. The following screen will be displayed at this time. 21 22 4.2 Standard CMOS Setup 4.3 Advanced CMOS Setup The Standard CMOS Setup is used for basic hardware system The Advanced CMOS Setup is designed for user's tuning best configuration. The main function is for Date/Time setting and performance of the ROCKY-5ST86HV board. As for normal Floppy/Hard Disk Drive setting. Please refer to the following operation, users don‘t have to change any default setting. The screen for this setup. default setting is pre-set for most reliable operation. Users can set “System Keyboard” to “Absent “ for the applications which don't need keyboard. For IDE hard disk drive setup, please check the following setup procedure: You can change the value of each option by using and 1. Use the Auto setting for detection during boot up. key. The available values are shown on the right screen. � Quick Boot > Enabled: this will enable the BIOS to boot 2. Use the IDE HDD AUTO DETECTION in the main menu to quickly when you turn on your computer. The BIOS will only automatically enter the drive specifications. check the first 1MB of the system memory. 3. Manually enter the specifications by yourself from � Quick Boot > Disabled: the BIOS will test all system memory when it boots up. It will spend about 40 seconds until it receives the ”User“ option. a Ready signal from the HDD. It will also wait for you to press the key or not. � 1st, 2nd, 3rd Boot Device > to define the device type for booting after the routines check up completes. If the 1st Boot Device fails, the BIOS will attempt to boot from the 2nd or the 3rd device. 23 24 � Try Other Boot Devices > the BIOS will try to boot from any 4.4 Advanced Chipset Setup other available device in the system if the 1st, 2nd and 3rd device fails to boot. BootUp Num-Lock > to turn on/off the Num-Lock option on a � enhanced keyboard when you boot. If you turn it off, the arrow keys on the numeric keypad can be used just as the other set of arrow keys on the keyboard and vice versa. PS/2 Mouse Support > to testify whether or not a PS/2 mouse � is supported. � System Keyboard > to testify whether or not a keyboard is attached to the computer. Password Check > to define if a password is necessary or not � for access to the system. � Boot to OS/2 > if you run the OS/2 operating system, this option must be set to yes. System BIOS Cacheable > to define whether or not the � memory segment FOOOH can be read from or written to cache These setup functions mainly work for Chipset. These options are used memory. Setting it Enabled will give faster execution in your to change the Chipset‘s registers. Please carefully change any default system. setting, otherwise the system may become unstable. � XXXX, 16k Shadow > ROM Shadow is a technique in which � Memory Hole at 15M-16M > to specify the location of a BIOS code is copied from slower ROM to faster RAM. If you memory hole in the CMOS RAM. This setting reserves 15MB enable it then the BIOS will be executed from the RAM. Each to 16 MB memory address space for ISA expansion cards that option allows 16KB segment to be shadowed to the RAM. specifically require this setting. Memory from 15MB and up will be unavailable to the system because expansion cards can only access memory up to 16MB. � VGA Frame Buffer Size (KB) > to specify VGA share memory size 25 26 4.5 Power Management Setup � Standby Time Out (Minute) > to specify the length of the Power Management Setup helps users handle the ROCKY- system-idle period while the system is in full power on state. 5ST86HV board‘s “green” function. The features could shut After this period of time has ended, the system will go into down the video display and hard disk to save energy for example. Standby state. The power management setup screen is as following: � Suspend Time Out (Minute) > to specify the length of the system-idle period while the system is in Standby state. After this period of time has ended, the system will go into Suspend state. � Display Activity > to specify if BIOS has to monitor display activity or not. � Power Management/APM > to enable or disable the Advanced Power Management feature. Green PC Monitor Power State > to specify the power state of � the monitor after the specified period of display-idle has ended. � Video Power Down Mode > to specify the power state of the VESA VGA video subsystem after the specified period of display-idle has ended. � Hard Disk Power Down Mode > to specify the power state of the hard disk after the specified period of hard drive-idle has ended. 27 28 � Serial Port C > The options are Disable, 3F8, 2F8, 3E8, 2E8 4.6 Peripheral Setup and Auto. You can set the I/O address of the serial port C This setup works mostly on (is almost working for) Multi-I/O Chip (COMC) or disable it. (W83977F). The options are used to change the Chipset‘s Serial Port D > The options are Disable, 3F8, 2F8, 3E8, 2E8 � registers. Please carefully change any default setting to meet and Auto. You can set the I/O address of the serial port D your application needs perfectly. The only special concern is (COMD) or disable it. Onboard Serial Port B. If you are using the IrDA port, you have to set this port accordingly. � OnBoard Parallel Port > The options are Auto, Disable, 3BC, 378 or 278. You can set the I/O address of the parallel port or disable it. � IR Port Support > to specify the IO Port address of the IR Port � Parallel Port Mode > ROCKY-5ST86HV provides EPP Mode. EPP passes the parallel port to be used with devices which stick to the EPP specification. The existing parallel port signals will be used by EPP to provide asymmetric bi-directional data transfer driven by the host devices. � Parallel Port IRQ > to define the Interrupt Request (IRQ) which is used by the parallel port. � Parallel Port DMA Channel > to set the DMA Channel used by the parallel port. When you enter the Peripheral Setup, the following items are available for setting: On-board FDC > The floppy disk drive controller can be � Enabled or Disabled by this item. When you do not need floppy disk, the FDD controller can be disabled. If you set it Auto, the BIOS will try to enable any floppy drive controller on the ISA Bus. � Serial Port A > The options are Disable, 3F8, 2F8, 3E8, 2E8 and Auto. You can set the I/O address of the serial port A (COMA) or disable it. � Serial Port B > The options are Disable, 3F8, 2F8, 3E8, 2E8 and Auto. You can set the I/O address of the serial port B (COMB) or disable it. 29 30 disk I/O that can be very time consuming. Therefore if the time Appendix A. Watch-Dog Timer out period has been set to 10 seconds, the I/O port 443H must be read within 7 seconds. The Watch-Dog Timer is provided to ensure that stand-alone Note: when exiting a program, it is necessary to disable the Watch- systems can always recover from catastrophic conditions that Dog Timer, otherwise the system will reset. cause the CPU to crash. This condition may have occurred by external EMI or a software bug. When the CPU stops working correctly, hardware on the board will perform hardware reset Example program: (cold boot) to bring the system back to a known state. TIMER_PORT = 443H The Watch-Dog Timer is controlled by three I/O ports. TIMER_START = 443H TIMER_STOP = 843H ; 443 Write Set Watch-Dog Time period ; INITIAL TIME PERIOD COUNTER 443 Read Enable the refresh the Watch-Dog ; (hex) Timer. 843 Read Disable the Watch-Dog Timer. MOV DX, TIME_PORT OUT AL, 8 ; 8 SECONDS (hex) ; ; ADD YOUR APPLICATION HERE To enable the Watch-Dog Timer, users have to define the Timer ; MOV DX, TIMER_START before enable the Watch-dog Timer function. The output data is IN AL, DX. ; START COUNTER a value of time interval and the range of the value is from 01(hex) ; to FF(hex) and time interval 1 sec to 255 sec. ; ADD YOUR APPLICATION HERE ; W_LOOP: Data Time Interval MOV DX,TIMER_STOP 01 1 sec IN AL,DX 02 2 sec MOV DX, TIMER_START IN AL, DX. ; RESTART COUNTER 03 3 sec ; 04 4 sec ; ADD YOUR APPLICATION HERE . . ; . . CMP EXIT_AP, 0 JNE W_LOOP . . MOV DX, TIMER_STOP FF 255 sec IN AL, DX ; ; EXIT AP This will enable and activate the countdown timer which will ; eventually time out and reset the CPU to ensure that this reset condition does not occur, the Watch-Dog Timer must be periodically refreshed by reading the same I/O ports 843H and 443H. This must be done within the time out period that is selected by software, please refer to the example program. A tolerance of at least 30% must be maintained to avoid unknown routines within the operating system (DOS), such as 31 32 1st MB Memory Address Map Appendix B. I/O Information Memory address Description 00000-9FFFF System memory IO Address Map A0000-BFFFF VGA buffer C0000-C7FFF VGA BIOS *D6000-DDFFF DOC 2000 I/O Address Range Description F0000-FFFFF System BIOS 000-01F DMA Controller #1 1000000- Extend BIOS 020-021 Interrupt Controller #1, Master 040-05F 8254 timer 060-06F 8042 (Keyboard Controller) 070-07F Real time Clock, NMI (non-maskable interrupt) Mask IRQ Mapping Chart 080-09F DMA Page Register 0A0-0BF Interrupt Controller #2 IRQ0 System Timer IRQ8 RTC Clock 0C0-0DF DMA Controller #2 IRQ1 Keyboard IRQ9 Unused 0F0 Clear Math Coprocessor Busy IRQ2 Cascade to IRQ Controller IRQ10 Unused 0F1 Reset Math Coprocessor IRQ3 COM2 IRQ11 Unused 0F2 Core logic programming configuration IRQ4 COM1 IRQ12 PS/2 mouse 0F8-0FF Math Coprocessor IRQ5 Unused IRQ13 FPU 1F0-1F8 Fixed Disk IRQ6 FDC IRQ14 Primary IDE 200-207 Game I/O IRQ7 Printer IRQ15 Secondary IDE 278-27F Parallel Printer Port 2 (LPT3) 2E8-2EF Serial Port 4 2F8-2FF Serial Port 2 300-31F Prototype Card DMA Channel Assignments 360-36F Reserved 378-37F Parallel Printer Port 1 (LPT2) DMA Channel Function 3B0-3BF Monochrome Display and Printer Adapter (LPT1) 0 Available 3C0-3CF Reserved 1 Available 3D0-3DF Color/Graphics Monitor Adapter 3E8-3EF Serial Port 3 2 Floppy Disk (8-bit transfer) 3F0-3F7 Diskette Controller 3 Available 3F8-3FF Serial Port 1 4 Cascade for DMA controller 1 443 Watch-dog timer enable 5 Available 843 or 043 Watch-dog timer disable 6 Available 7 Available 33 34