WAFER-4821
DX4-100 MHz with
Ethernet SBC
Version 2.0
User Manual Version 2.0
August 22, 2003
©Copyright 2003 by ICP Electronics Inc. All Rights Reserved.
2
Copyright Notice
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
WAFER-4821 is a registered trademark 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 a registered trademark of
American Megatrends, Inc. Other product names mentioned herein are used for
identification purposes only and may be trademarks and/or registered tr ademarks
of their respective companies.
Support
For any questions regarding the content of this manual or related issues, please
email us at: support@iei.com.tw
.
3
Table of Contents
1 Introduction .................................................................. 5
1.1 Specifications....................................................................................6
1.2 Package Contents ..............................................................................7
2 Installation.................................................................... 8
2.1 WAFER-4821 Layout...........................................................................8
2.2 Unpacking Precautions........................................................................9
2.3 CPU Setting for WAFER-4821...............................................................9
2.4 Watchdog Timer ..............................................................................10
2.5 DiskOnChip™ Flash Disk ...................................................................10
2.6 Serial port2 RI Pin Setting.................................................................11
2.7 Serial port2 RS-232, RS-422 or RS-485 Setting....................................11
2.8 Free IRQ3 and IRQ4 Setting..............................................................12
2.9 Clear CMOS Setup ...........................................................................12
2.10 Realtek8019AS Setting ..................................................................12
3 Connection .................................................................. 13
3.1 Floppy Disk Drive Connector..............................................................13
3.2 IDE Disk Drive Connector.................................................................. 14
3.3 Parallel Port ....................................................................................15
3.4 Serial Ports..................................................................................... 16
3.5 Keyboard/Mouse Connector............................................................... 17
3.6 External Switches and Indicators........................................................18
3.7 External Power Connector.................................................................18
3.8 External Speaker .............................................................................19
3.9 PC/104 Connection Bus ....................................................................20
3.9 IrDA Infrared Interface Port...............................................................22
3.10 LAN RJ45 Connector...................................................................... 22
3.11 Digital I/O.................................................................................... 23
4 AMI BIOS Setup........................................................... 24
4.1 Getting Started................................................................................24
4.2 Standard CMOS Setup......................................................................25
4.3 Advanced CMOS Setup .....................................................................26
4.4 Advanced Chipset Setup ...................................................................28
4.5 Peripheral Setup..............................................................................28
4.6 Auto-Detect Hard Disk......................................................................30
4
4.7
Change Supervisor Password.............................................................30
4.8 Auto Configuration with Optimal Settings ............................................ 31
4.9 Auto Configuration with Fail Safe Settings ...........................................31
4.10 Save Settings and Exit...................................................................32
4.11 Exit Without Saving.......................................................................32
Appendix A Watchdog Timer .............................................. 33
Appendix B I/O Information .............................................. 35
Appendix C Digital Input and Output.................................. 37
5
Chapter 1 Introduction
Thank you for choosing WAFER- 4821 DX4-100 with Ethernet Single Board
Computer. WAFER-4821 is a stand alone board with PC/104 connector, equipped
with four COM Ports and advanced high-performance multi-mode I/O and Ethernet
function, designed for the system manufacturers, integrators, or VARs to provide
all the performance, reliability, and quality.
An advanced high performance super I/O function is supported by the Maple
chipset. The on-chip UART s are compatible with the NS16C550. The parallel port
and IDE interface are compatible with IBM PC/AT and XT architecture's, as well as
EPP and ECP.
The most outstanding feature in the WAFER-4821 is the built-in PC/104 expansion
bus. Based on the PC/104 bus, you can easily install over thousands of PC/104
modules from hundreds vendors in the world. WAFER-4821 has external power
connector that can let it connects to power supply directly. It is suitable for your
standalone applications. Also, it provides four COM Ports: three RS232C, one
RS-232C or RS-422/485 Port, for industrial field site application.
6
1.1 Specifications
WAFER -4821 DX4-100 with Ethernet Single Board Computer provides the following
specification:
• System on Chip (SOC):
System core logic, I/O, CPU (DX4-100) in one chip.
Real-time clock/calendar and battery backup: by DS12887 or equivalent.
• Memory:
DRAM memory: up to 32MB, 1 pcs 72-pin SIMM on board 4 MB designed for
customer requirement.
Disk on Chip socket: support one Disk on Chip socket.
• Ethernet Interface:
Chipset: Realtek RTL-8019AS chipset (on board).
Type: 16-bit Ethernet, Novell NE2000 compatible, 10Base-T 10 MBps.
Connection: on-board RJ-45 connector.
• Integrated Multi I/O:
IDE hard disk drive interface: Supports up to two IDE hard disk drives. Can be
disabled by BIOS Setup.
Floppy disk drive interface: Supports two 2.88 MB, 1.44MB, 1.2MB , 720KB, or
360KB floppy disk drives. Can be disabled by BIOS Setup.
Four high speed Series ports: Three RS-232C, one RS-232C or RS-422/485
Port.
PS/2 Mouse/Keyboard Connector: 6-pin Mini DIN Keyboard Connector.
• Digital I/O: 4 TTL inputs and 4 TTL outputs
• Industrial features:
Watchdog timer: Softw are programmable time period can be set from 1 to 255
seconds. Reset is generated when CPU does not periodically trigger the timer.
PC/104 expansion bus: A 64-pin and 40-pin, industrial embedded-PC bus
standard.
External power connector: 5-pin male connector (model: 2571-08TS)
7
Keyboard connector: 6-pin mini-DIN keyboard connector.
• General information:
Power Consumption: +5V @ 1.85A (DX4-100MHz, 32MB RAM)
Operating Temperature: 0℃ ~ 60℃
Humidity: 5% ~ 95%, non-condensed
Dimension: 102.01mm(W) x 146.48mm(L)
1.2 Package Contents
In addition to this User Manual, WAFER -4821 package includes the following items:
• WAFER-4821 DX4-100 with Ethernet Single Board Computer x 1
• RS-232/Printer Cable x 1
• FDD/HDD Cable x 1
• 6-pin Mini-Din Keyboard/Mouse Adapter Cable x 1
• Power/wire Cable x 1
• RS-232/422/485 Cable x 1
8
Chapter 2 Installation
This chapter describes how to install the WAFER -4821. The layout of W AFER-4821
is shown on the next page and the Unpacking Precautions that you should be
careful with is described on the following page. Jumpers and switches setting is
also included for this board’s configuration, such as: system clock settin g and
Watchdog timer.
1.1 WAFER-4821 Layout
9
1.2 Unpacking Precautions
Some components on WAFER -4821 SBC are very sensitive to static electric charges
and can be damaged by a sudden rush of power. To protect it from unintended
damage, follow the precautions below:
i. Ground yourself to remove any static charge before touching your WAFER -4821
SBC. You can do it by using a grounded wrist strap a t all times or by frequently
touching any conducting materials that is connected to the ground.
ii. Handle your WAFER-4821 SBC by its edges. Do not touch IC chips, leads or
circuitry if not necessary.
iii. Do not plug any connector or jumper while the power is on.
1.3 CPU Setting for WAFER-4821
• JP5: CPU CLOCK SETTING:
The system clock is generated by the ICS650R-01, and the different CPU clock
frequency can be selected by JP5 and shown as following table:
CPU CLK 1-2 3-4
75MHz ON ON
100MHz OFF OFF
10
1.4 Watchdog Timer
Watchdog Timer is enabled by reading port 443H. It should be triggered before
the time-out period ends, otherwise it will assume the program operation is
abnormal and will issue a reset signal to start again. The Watchdog Timer is
disabled by reading port 043H, or 843H.
• JP2: Watch-Dog Timer Type Selector
1-2 RESERVED
2-3 RESET
1.5 DiskOnChip™ Flash Disk
The DiskOnChip™ does not need any extra software utility because the DOC is
100% software compatible to hard disk. It is just “plug and play”, easy and
reliable.
• JP3: DiskOnChip™ Memory Address Setting
ADDRESS 1-2 3-4 5-6
CE00H OPEN CLOSE CLOSE
D600H CLOSE OPEN CLOSE
DE00H OPEN OPEN CLOSE
11
1.6 Serial port2 RI Pin Setting
The serial port2 (CN16) can supply +5V or +12V power to the serial devices via RI
pin (Pin 9) of the serial port connector. The maximum current is 1A with fuse
protection. If the output is set to 12V, make sure that yo u have 12V to supply to
the board.
• JP13, JP14: for CN16, Pin 8 Selector
CN16 Pin9 JP14 JP13
RI Signal 2-3 Any is applicable
when JP 14 uses 2-3
+5V 1-2 2-3
+12V 1-2 1-2
* +5V or +12V output is fuse protected.
1.7 Serial port2 RS-232, RS-422 or RS-485 Setting
The serial port2 (CN16) can be set to RS-232 or RS-422/485 for industrial field site
application.
• JP8: COM2 (CN16) RS-232/422/485 setting
RS-232 RS-422 RS-485
1-2 CLOSE OPEN OPEN
3-4 OPEN CLOSE CLOSE
5-6 OPEN OPEN CLOSE
12
1.8 Free IRQ3 and IRQ4 Setting
If you want to free IRQ3 and IRQ4 for other application then the serial port2 and
serial port1 have to be disabled by BIOS setting and the jumper JP9 and JP10 have
to be closed to free IRQ3 and IRQ4, respectively.
• JP 9: Free IRQ3 Setting
OFF Enable serial port2
ON Disable serial port2
• JP 10: Free IRQ4 Setting
OFF
Enable serial port1
ON
Disable serial port1
1.9 Clear CMOS Setup
If you forget the CMOS password, you can clear or reset it by closing the JP11. After
JP11 is closed, turn on the power for about 3 seconds then turn it off and open the
JP11. Now, the password and CMOS contents have been cleared from your CMOS .
• JP11: Clear CMOS
OFF NORMAL
ON CLEAR
1.10 Realtek8019AS Setting
Realtek8019AS can be set to PNP MODE or JUMPERLESS MODE.
• JP1: Realtek8019AS Setting
OFF PNP mode
ON JUMPERLESS mode
13
Chapter 3 Connection
This chapter describes how to connect peripherals, switches and indicators to the
WAFER-4821 board. You can access most of the connectors from the top of the
board while it is installed in the chassis.
1.1 Floppy Disk Drive Connector
WAFER-4821 board comes equipped with a 34-pin daisy-chain driver connector
cable. The detailed pin assignment of the connector is specified as following
table:
• CN8: Floppy Disk Drive Connector
PIN Description PIN Description
1 GROUND 2 REDUCE WRITE
3 GROUND 4 N/C
5 GROUND 6 N/C
7 GROUND 8 INDEX#
9 GROUND 10 MOTOR ENABLE 0#
11 GROUND 12 DRIVE SELECT 1#
13 GROUND 14 DRIVE SELECT 0#
15 GROUND 16 MOTOR ENABLE 1#
17 GROUND 18 DIRECTION#
19 GROUND 20 STEP#
21 GROUND 22 WRITE DATA#
23 GROUND 24 FDCWE#
25 GROUND 26 TRACK 0#
27 GROUND 28 WRITE PROTECT#
29 GROUND 30 READ DATA#
31 GROUND 32 HEAD#
33 GROUND 34 DISK CHANGE#
14
1.2 IDE Disk Drive Connector
You can attach two IDE (Integrated Device Electronics) hard disk drives to the
WAFER-4821 internal controller. The board comes equipped with a 44-pin
flat-cable connector. The detailed pin assignment of the connector is specified as
following table:
• CN1: IDE Interface Connector
PIN Description PIN Description
1 RESET# 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10
9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GND 20 N/C
21 N/C 22 GROUND
23 IOW# 24 GROUND
25 IOR# 26 GROUND
27 IDE CHRDY 28 BALE
29 N/C 30 GROUND
31 IRQ14 32 IOCS16
33 SA 1 34 N/C
35 SA 0 36 SA2
37 HDC CS0# 38 HDC CS1#
39 HDD ACTIVE# 40 GROUND
41 VCC 42 VCC
43 GND 44 VCC
15
1.3 Parallel Port
This port is usually connected to a printer. WAFER-4821 includes an on-board
parallel port, accessed through a 26-pin flat-cable connector CN6. The detailed
pin assignment of the connector is specified as following table:
• CN6: Parallel Port Connector
PIN Description PIN 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 INITIALIZE
17 LPT SELECT LN# 18 GND
19 GND 20 GND
21 GND 22 GND
23 GND 24 GND
25 GND 26 N/C
16
1.4 Serial Ports
WAFER- 4821 offers four high speed NS16C550 compatible UARTs with
Read/Receive 16 byte FIFO serial ports. These ports enable you connect to serial
devices or a communication network. Two 9-pin DSUB connectors, one 10-pin
header and one 14-pin header are provided by WAFER-4821. The detailed pin
assignment of the connectors are specified as following tables:
• CN17: Serial Port1 Connector (9-pin DSUB)
PIN Signal Name
PIN Signal Name
1 DCD 6 DSR
2 RX 7 RTS
3 TX 8 CTS
4 DTR 9 RI
5 GND 10 GND
• CN16: Serial Port2 Connector (14-pin Header/W Housing)
PIN Description PIN Description
1 DCD 2 DSR
3 RX 4 RTS
5 TX 6 CTS
7 DTR 8 RI
9 GND 10 NC
11 TX2+ 12 TX213 RX2+ 14 RX2-
• CN11: Serial Port3 Connector (9-pin DSUB)
PIN Signal Name
PIN Signal Name
1 DCD 6 DSR
2 RX 7 RTS
3 TX 8 CTS
4 DTR 9 RI
5 GND 10 NC
17
• CN10: Serial Port4 Connector (10-pin Header/W Housing)
PIN Description PIN Description
1 DCD 6 DSR
2 RX 7 RTS
3 TX 8 CTS
4 DTR 9 RI
5 GND 10 GND
1.5 Keyboard/Mouse Connector
WAFER-4821 provides a 6-pin Mini-DIN connector CN13 on the board-mounting
bracket for single board computer applications.
• CN13: PS/2Mouse, Keyboard Connector (Mini Din)
PIN Description
1 KBDAT
2 MDAT
3 GND
4 +5V
5 KBCLK
6 MCLK
18
1.6 External Switches and Indicators
There are many external switches and indicators for monitoring and controlling
your CPU board. These features are optional. The detailed pin assignment of the
connectors is specified as following table:
• CN5: Reset button
PIN Description
1 RESET
2 GND
• CN2: IDE LED connector
PIN Description
1 HDD ACTIVE#
2 +5V
1.7 External Power Connector
WAFER- 4821 has an on-board external power connector CN3 and a 2-pin power
connector CN7. You can connect power directly to the CPU board without passive
backplane application.
• CN3: External Power Connector
PIN Description
1 VCC
2 VCC
3 GND
4 GND
5 +12V
19
• CN7: External Power LED Connector
PIN Description
1 +5V
2 GND
1.8 External Speaker
WAFER- 4821 has its own buzzer, which can be connected to external speaker
through the connector CN15:
• CN15: External Speaker Connector
PIN Description
1 +5V
2 Speaker
20
3.9 PC/104 Connection Bus
WAFER-4821 PC/104 expansion bus enables you to attach any kind of PC/104
modules. The PC/104 bus has already become the industrial embedded PC bus
standard, so you can easily install over thousands of PC/104 modules from
hundreds of vendors in the world. There are two PC/104 connectors on this board:
PC/104-64 and PC/104-40.
• CN19: PC/104-40 Connector
PIN Description PIN Description
1 GND 21 GND
2 MCS16# 22 SBHE#
3 IOCS16# 23 LA23
4 IRQ10 24 LA22
5 IRQ11 25 LA21
6 IRQ12 26 LA20
7 IRQ15 27 LA19
8 IRQ14 28 LA18
9 DACK0# 29 AL17
10 DRQ0 30 MEMR#
11 DACK5# 31 MEMW#
12 DRQ5 32 SD8
13 DACK6# 33 SD9
14 DRQ6 34 SD10
15 DACK7# 35 SD11
16 DRQ7 36 SD12
17 VCC 37 SD13
18 MASTER# 38 SD14
19 GND 39 SD15
20 GND 40 GND
21
• CN18: PC/104-64 Connector
PIN Description PIN Description
1 IOCHCK# 33 GND
2 SD7 34 IRSTDRV
3 SD6 35 VCC
4 SD5 36 IRQ9
5 SD4 37 -5V
6 SD3 38 DRQ2
7 SD2 39 -12V
8 SD1 40 ZWS
9 SD0 41 +12V
10 IOCHRDY 42 GND
11 AEN 43 SMEMW#
12 LA19 44 SMEMR#
13 LA18 45 IOW#
14 LA17 46 IOR#
15 SA16 47 DACK3#
16 SA15 48 DRQ3
17 SA14 49 DACK1#
18 SA13 50 DRQ1
19 SA12 51 REFRESH#
20 SA11 52 SYSCLK
21 SA10 53 IRQ7
22 SA9 54 N/C
23 SA8 55 IRQ5
24 SA7 56 IRQ4
25 SA6 57 IRQ3
26 SA5 58 DACK2
27 SA4 59 TC
28 SA3 60 BALE
29 SA2 61 VCC
30 SA1 62 OSC
31 SA0 63 GND
32 GND 64 GND
22
1.9 IrDA Infrared Interface Port
WAFER-4821 has a built-in IrDA port supports Serial Infrared (SIR) or Amplitude
Shift Keyed IR (ASKIR) interface. If you want to use the IrDA port, you have to
configure the SIR or ASKIR model in BIOS>Peripheral Setup>COM4. Then the
normal RS-232 COM4 will be disabled.
• CN9: IR Connector
PIN Description
1 VCC
2 N/C
3 IR-RX
4 GND
5 IR-TX
1.10 LAN RJ45 Connector
WAFER-4821 built-in RJ45 LAN connector is for 10Mbps Ethernet (NE-2000
compatible) operation.
• CN14: LAN RJ45 Connector
PIN Description PIN Description
1 TX+ 5 NC
2 TX- 6 RX3 RX+ 7 NC
4 NC 8 NC
• CN4: LAN LED
Green LED for LINK and Yellow LED for RX.
23
1.11 Digital I/O
One of the characteristics of digital circuit is its fast response to high or low signal.
This kind of respond is badly needed for harsh and critical industrial operating
environment. That is why we design 4-bit digital inputs and 4-bit digital outputs
on the WAFER-4821.
Digital Input and Output, generally, are control signals. You can use these signals
to control external devices that needs On/Off circuit or TTL devices. The register
address is 340H (or 240H, 260H) (configured with BIOS setting).
• CN12: Digital I/O
PIN Signal Name PIN Signal Name
1 GND 6 VCC
2 DO3 7 DO2
3 DO1 8 DO0
4 DIN3 9 DIN2
5 DIN1 10 DIN0
24
Chapter 4 AMI BIOS Setup
WAFER-4821 uses AMI BIOS for system configuration. 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.
1.1 Getting Started
When you turn on the power button, the BIOS will enter the Power-On-Self-Test
routines. These routines will be executed for system test and initialization and
system configuration verification.
Note: for your convenience, a diskette containing files for updating the BIOS is
included with the following content:
FLASH634.COM: Flash utility to update BIOS.
After the POST routines are completed, the following message appears:
"Hit DEL if you want to run SETUP"
To access AMI BIOS SETUP UTILITY , press <Del> key. The following screen will be
displayed at this time:
25
1.2 Standard CMOS Setup
The standard CMOS Setup is used for basic hardware system configuration. The
main function is for Date/Time setting and Floppy/Hard Disk setting. Please refer to
the following screen for this setup.
To set the Date, for example, press either the arrow or <Enter> button on your
keyboard to select one of the fields (Months, Date or Year) then press either
<PgUp> or <PgDn> to set it to the current Months, Date and Year. Do the same
steps for Time setting.
For IDE hard disk drive setup, please check the following possible setup
procedure:
1. Use the Auto-Detect Hard Disk option in the main menu; the computer will
automatically detect the HDD specifications.
2. Manually enter the specifications by yourself by selecting the Type of your HDD .
26
1.3 Advanced CMOS Setup
The following screen will be displayed if you select Advanced CMOS Setup:
You can change the value of each option by using <PgUp> and <PgDn> key . The
available values are shown on the right screen.
Quick Boot
Enabled: T o enable the BIOS to boot quickly when you turn on yo ur computer . The
BIOS will only check the first 1MB of the system memory.
Quick Boot
Disabled: BIOS will test all system memory when it boots up. It will spend about
40 seconds until it receives a Ready signal from the HDD. It will also wait for you
to press the <Del> key or not.
1
st
, 2nd, 3rd Boot Device
T o define the device type for booting after the routines check up comple tes. If the
1
st
Boot Device fails, BIOS will attempt to boot from the 2nd or the 3rd device.
Try Other Boot Devices
BIOS will try to boot from any other available device in the system if the 1
st
, 2nd and
3
rd
device fails to boot.
Floppy Access Control
To define the read/write access which is set when booting from a floppy drive.
27
Hard Disk Access Control
To define the read/write access which is set when booting from a HDD.
S.M.A.R.T. for Hard Disks
To allow BIOS to use the System Management and Reporting Technologies
protocol for reporting server system information on a network.
BootUp Num-Lock
To turn on/off the Num-Lock option on an 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.
Primary Display
To define the type of display monitor of the system. The Absent option is for
network file servers.
Password Check
To define if a password is necessary or not for accessing 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
T o define whether or not the memory segments FOOOH can be read from or written
to cache memory . Setting it as Enabled will give faster execution in your system.
XXXX, 16k Shadow
ROM Shadow is a technique in which BIOS code is copied from slower ROM to faster
RAM. If you enable it then the BIOS will be executed form the RAM. Each option
allows 16KB segment to be shadowed to the RAM.
28
4.4 Advanced Chipset Setup
Note: Do not change any value on this page unless necessary.
4.5 Peripheral Setup
When you enter the Peripheral Setup, the following items are available for setting:
• OnBoard IDE: to define the on-board Integrated Drive Electronics controller
channel(s) to be used. Available options are: Primary, Secondary and
Disabled.
• OnBoard 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.
29
• Serial Port 1: The options are Disable, 3F8, 2F8, 3E8, 2E8 and Auto. You can
set the I/O address of the serial port 1 or disable it.
• Serial Port 2: The options are Disable, 3F8, 2F8, 3E8, 2E8 and
Auto. You can set the I/O address of the serial port 2 or disable it.
• Serial Port 3: The options are Disable, 3F8, 2F8, 3E8, 2E8 and Auto. You can
set the I/O address of the serial port 3 or disable it.
• Serial Port 4: The options are Disable, 3F8, 2F8, 3E8, 2E8 and Auto. You can
set the I/O address of the serial port 4 or disable it.
• 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.
• IrDA Protocol: To specify the function mode if an IrDA mode is selected.
• Parallel Port Mode: WAFER-4821 provides EPP, ECP, ECP/EPP, and SPP/BPP
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. ECP
passes the parallel port to be used with devices which stick to the ECP
specification.
• 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.
30
4.6 Auto-Detect Hard Disk
This option detects the parameters of an IDE hard disk driv e (HDD sector, cylinder,
head, etc) automatically and will put the parameters into the Standard CMOS
Setup screen. Up to 4 IDE drives can be detected and the parameters will be listed
in the box. Press <Y> if you accept these parameters. Press <N> to skip the
next IDE drives.
Note: If your IDE HDD was formatted in previous older system, incorrect
parameters may be detected. In this case, you need to enter the correct
parameters manually or low-level format the disk.
4.7 Change Supervisor Password
This option sets a password that is used to protect your system and Setup Utility.
Supervisor Password has higher priority than User Password. Once you setup the
password, the system will always ask you to key-in password every time you enter
the BIOS SETUP. If you enter the BIOS SETUP with Supervisor Password, you can
choose every setup/option on the main menu but with User P assword, you can only
choose three setup/options (USER PASSWORD , SAVE SET TING AND EXIT and EXIT
WITHOUT SAVING). To disable these passwords, enter the BIOS SETUP room with
Supervisor Password and then just press the <Enter> key instead of entering a
new password when the prompt 'Enter Password' pops up.
Note: If you forget the password, do the Clear/Reset CMOS procedure (see Part 2.3
the CPU Setting for WAFER -4 821 >> Clear CMOS SETUP)
31
4.8 Auto Configuration with Optimal Settings
This option lets you load the optimal default settings. These settings are
best-case values which will provide the best performance. Whenever your CMOS
RAM is damaged, this optimal setting will be loaded automatically.
4.9 Auto Configuration with Fail Safe Settings
This option lets you load the Fail Safe default settings when something happens to
your computer so that it cannot boot normally. These settings are not the most
optimal settings but are the most stable settings.
32
4.10 Save Settings and Exit
Select this option when you finish setting all the parameters and want to save them
into the CMOS. Just simply press <Enter> key and all the configuration changes
will be saved.
4.11 Exit Without Saving
Select this option if you want to exit the Set up without saving the changes that you
made. Press <Enter> key and you will exit the BIOS SETUP without saving the
changes.
33
Appendix A Watchdog Timer
Watchdog Timer is pro vided to ensure that standalone systems can always recover
from catastrophic conditions that 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 a hardware reset (cold boot) to bring
the system back to a known state.
The Watch-Dog Timer is controlled by three I/O ports.
443 Write Set Watchdog Time period
443 (hex) Read Enable the refresh the Watchdog Timer.
843/043 (hex) Read Disable the Watchdog Timer.
To enable the Watchdog Timer, user has to define Timer before enable the
Watchdog Timer function. The output data is a value of time interval and the
range of the value is from 01(hex) to FF (hex) and time interv al 1 sec to 255 sec.
Data Time Interval
01 1 sec
02 2 sec
03 3 sec
04 4 sec
.
.
.
.
.
.
FF 255 sec
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 W atch-Dog
Timer must be periodically refreshed by reading the same I/O port 043H and 443H.
This must be done within the time out period that is selected by software, please
refer to the example program.
34
A tolerance of at least 5% must be maintained to avoid unknown routines within
the operating system (DOS), such as disk I/O that can be very time consuming.
Therefore if the time out period has been set to 10 seconds, the I/O port 443H must
be read within 7 seconds.
Note: when exiting a program it is necessary to disable the Watch-Dog Timer,
otherwise the system will reset.
Example program:
TIMER_PORT = 443H
TIMER_START = 443H
TIMER_STOP = 843H
;
; INITIAL TIME PERIOD COUNTER
;
MOV DX, TIME_PORT
OUT AL, 8 ; 8 SECONDS
;
; ADD YOUR APPLICATION HERE
;
MOV DX, TIMER_START
IN AL, DX. ; START COUNTER
;
; ADD YOUR APPLICATION HERE
;
W_LOOP:
MOV DX,TIMER_STOP
IN AL,DX
MOV DX, TIMER_START
IN AL, DX. ; RESTART COUNTER
;
; ADD YOUR APPLICATION HERE
;
CMP EXIT_AP, 0
JNE W_LOOP
MOV DX, TIMER_STOP
IN AL, DX
;
; EXIT AP
;
35
Appendix B I/O Information
IO Address Map
I/O address Range Description
000-01F DMA Controller #1
020-021 Interrupt Controller #1, Master
040-05F 8254 timer
060-06F 8042 (Keyboard Controller)
070-07F Real time Clock, NMI Mask
080-09F DMA Page Register
0A0-0BF Interrupt Controller #2
0C0-0DF DMA Controller #2
0F0 Clear Math Coprocessor Busy
0F1 Reset Math Coprocessor
0F8-0FF Math Coprocessor
1F0-1F8 Fixed Disk
200-207 Game I/O
278-27F Parallel Printer Port 2 (LPT3)
2E8-2EF Serial Port 4
2F8-2FF Serial Port 2
300-31F Prototype Card
360-36F Reserved
378-37F Parallel Printer Port 1 (LPT2)
3B0-3BF Monochrome Display and Printer Adapter (LPT1)
3C0-3CF Reserved
3D0-3DF Color/Graphics Monitor Adapter
3E8-3EF Serial Port 3
3F0-3F7 Diskette Controller
3F8-3FF Serial Port 1
443 Watchdog timer enable
843 or 043 Watchdog timer disable
36
1st MB Memory Address Map
Memory address Description
00000-9FFFF System memory
A0000-BFFFF VGA buffer
C0000-C7FFF VGA BIOS
C8000-EFFFF Free for customer application
F0000-FFFFF System BIOS
1000000- Extend BIOS
IRQ Mapping Chart
IRQ0 System Timer IRQ8 RTC Clock
IRQ1 Keyboard IRQ9 Unused
IRQ2 Cascade to IRQ Controller IRQ10 COM4
IRQ3 COM2 IRQ11 COM3
IRQ4 COM1 IRQ12 PS/2 mouse
IRQ5 Unused IRQ13 FPU
IRQ6 FDC IRQ14 Primary IDE
IRQ7 Printer IRQ15 Unused
DMA Channel Assignments
DMA Channel Function
0 Available
1 Available
2 Floppy Disk (8-bit transfer)
3 Available
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available
37
Appendix C Digital Input and Output
Digital Input and Output, generally, are control signals. You can use these signals
to control external devices that needs On/Off circuit or TTL devices. The register
address is 340H. This register is designed to latch the output data.
• CN16: Digital I/O
PIN Signal Name PIN Signal Name
1 GND 6 VCC
2 DO3 7 DO2
3 DO1 8 DO0
4 DIN3 9 DIN2
5 DIN1 10 DIN0
Below is the specifications of WAFER-4821 Digital I/O:
‧
Digital Input/Output channels : 4 bits
‧
TTL Devices compatible
‧
Digital Logic level 0: +0.5V max
‧
Digital Logic level 1: 3.5V to 5V
‧
Register Address: 340H
Example program:
PORT_ADRESS = 340H
G_LOOP: MOV DX, PORT_ADDRESS
IN AL, DX
CMP AL, P_STATUS
JNE W_LOOP
CMP X_STATUS, 0
JE G_LOOP
OUT DX, AL
MOV X_STATUS, 0
JMP G_LOOP
W_LOOP: MOV P_STATUS, AL
MOV X_STATUS, 1
;
; WAIT HERE
;
JMP G_LOOP
X_STATUS DB 0
P_STATUS DB
Loading...