SMC Networks AR-B1462, 486DX2, 486DX4, 486DX User Manual

AR-B1462

INDUSTRIAL GRADE

486DX/DX2/DX4 CPU CARD

User’ s Guide

Edition: 2.0

Book Number: AR-B1462-99.A02

AR-B1462 User¡¦s Guide

Table of Contents

0. PREFACE....................................................................................................................................................... 0-3

0.1 COPYRIGHT NOTICE AND DISCLAIMER................................................................................................................................0-3

0.2 WELCOME TO THE AR-B1462 CPU BOARD...........................................................................................................................0-3

0.3 BEFORE YOU USE THIS GUIDE...............................................................................................................................................0-3

0.4 RETURNING YOUR BOARD FOR SERVICE............................................................................................................................0-3

0.5 TECHNICAL SUPPORT AND USER COMMENTS...................................................................................................................0-3

0.6 ORGANIZATION..........................................................................................................................................................................0-4

0.7 STATIC ELECTRICITY PRECAUTIONS....................................................................................................................................0-4

1. OVERVIEW..................................................................................................................................................... 1-1

1.1 INTRODUCTION.........................................................................................................................................................................1-1

1.2 PACKING LIST............................................................................................................................................................................1-2

1.3 FEATURES..................................................................................................................................................................................1-2

2. SYSTEM CONTROLLER ................................................................................................................................ 2-1

2.1 DMA CONTROLLER...................................................................................................................................................................2-1

2.2 KEYBOARD CONTROLLER .......................................................................................................................................................2-1

2.3 INTERRUPT CONTROLLER......................................................................................................................................................2-2

2.3.1 I/O Port Address Map..........................................................................................................................................................2-3

2.3.2 I/O Channel Pin Assignment (Bus1)...................................................................................................................................2-3

2.4 REAL-TIME CLOCK AND NON-VOLATILE RAM......................................................................................................................2-5

2.5 TIMER..........................................................................................................................................................................................2-5

2.6 SERIAL PORT.............................................................................................................................................................................2-6

2.7 PARALLEL PORT........................................................................................................................................................................2-8

3. SETTING UP THE SYSTEM............................................................................................................................ 3-1

3.1 OVERVIEW..................................................................................................................................................................................3-1

3.2 SYSTEM SETTING .....................................................................................................................................................................3-2

3.2.1 FDD Port Connector (CN8).................................................................................................................................................3-2

3.2.2 Hard Disk (IDE) Connector .................................................................................................................................................3-3

3.2.3 Parallel Port Connector (CN9)............................................................................................................................................3-4

3.2.4 PC/104 Connector...............................................................................................................................................................3-5

3.2.5 LED Header (LM1) ..............................................................................................................................................................3-7

3.2.6 Serial Port............................................................................................................................................................................3-7

3.2.7 Keyboard Connector .........................................................................................................................................................3-11

3.2.8 External Speaker Header (J9) ..........................................................................................................................................3-11

3.2.9 Power Connector...............................................................................................................................................................3-11

3.2.10 Reset Header (J6).........................................................................................................................................................3-12

3.2.11 PS/2 Mouse Connector.................................................................................................................................................3-12

3.2.12 Battery Setting...............................................................................................................................................................3-13

3.2.13 26-Pin Audio Connector (CN10)...................................................................................................................................3-13

3.2.14 CPU Setting...................................................................................................................................................................3-14

3.2.15 PCI Connector...............................................................................................................................................................3-15

3.2.16 Memory Setting .............................................................................................................................................................3-16

3.3 ETHERNET CONTROLLER .....................................................................................................................................................3-16

3.3.1 Network 4-Pin Connector (J3)...........................................................................................................................................3-17

3.3.2 AUI Connector (CN2)........................................................................................................................................................3-17

4. CRT/LCD FLAT PANEL DISPLAY.................................................................................................................. 4-1

4.1 CONNECTING THE CRT MONITOR.........................................................................................................................................4-1

4.1.1 CRT Connector (CN13).......................................................................................................................................................4-1

4.2 LCD FLAT PANEL DISPLAY ......................................................................................................................................................4-2

4.2.1 Inverter Board Description ..................................................................................................................................................4-4

4.2.2 LCD Connector....................................................................................................................................................................4-4

4.3 SUPPORTED LCD PANEL.........................................................................................................................................................4-4

5. INSTALLATION.............................................................................................................................................. 5-1

5.1 OVERVIEW..................................................................................................................................................................................5-1

5.2 UTILITY DISKETTE.....................................................................................................................................................................5-1

5.2.1 VGA Driver...........................................................................................................................................................................5-2

5.2.2 Audio Driver.........................................................................................................................................................................5-4

5.2.3 Network & SSD Utility..........................................................................................................................................................5-6

5.3 WATCHDOG TIMER...................................................................................................................................................................5-9

5.3.1 Watchdog Timer Setting......................................................................................................................................................5-9

5.3.2 Watchdog Timer Enabled..................................................................................................................................................5-10

5.3.3 Watchdog Timer Trigger....................................................................................................................................................5-10

5.3.4 Watchdog Timer Disabled .................................................................................................................................................5-10

6. SOLID STATE DISK ....................................................................................................................................... 6-1

6.1 OVERVIEW..................................................................................................................................................................................6-1

0-1

AR-B1462 User¡¦s Guide

6.2 SWITCH SETTING......................................................................................................................................................................6-1

6.2.1 Overview..............................................................................................................................................................................6-2

6.2.2 I/O Port Address Select (SW1-1) ........................................................................................................................................6-2

6.2.3 SSD Firmware Address Select (SW1-2).............................................................................................................................6-2

6.2.4 SSD Drive Number (SW1-4 & SW1-5) ...............................................................................................................................6-3

6.2.5 ROM Type Select (SW1-6 & SW1-7)..................................................................................................................................6-4

6.2.6 Serial Port 1 Mode Select (SW1-8).....................................................................................................................................6-4

6.2.7 Serial Port 2 Mode Select (SW1-9 & SW1-10)...................................................................................................................6-5

6.3 JUMPER SETTING .....................................................................................................................................................................6-5

6.4 ROM DISK INSTALLATION........................................................................................................................................................6-6

6.4.1 UV EPROM (27Cxxx)..........................................................................................................................................................6-6

6.4.2 Large Page 5V FLASH Disk................................................................................................................................................6-7

6.4.3 Small Page 5V FLASH ROM Disk......................................................................................................................................6-9

6.4.4 RAM Disk...........................................................................................................................................................................6-11

6.4.5 Combination of ROM and RAM Disk................................................................................................................................6-12

6.5 DISKONCHIP INSTALLATION .................................................................................................................................................6-12

7. BIOS CONSOLE............................................................................................................................................. 7-1

7.1 BIOS SETUP OVERVIEW ..........................................................................................................................................................7-1

7.2 STANDARD CMOS SETUP........................................................................................................................................................7-2

7.3 ADVANCED CMOS SETUP........................................................................................................................................................7-3

7.4 ADVANCED CHIPSET SETUP...................................................................................................................................................7-6

7.5 PERIPHERAL SETUP .................................................................................................................................................................7-7

7.6 AUTO-DETECT HARD DISKS....................................................................................................................................................7-7

7.7 PASSWORD SETTING...............................................................................................................................................................7-7

7.7.1 Setting Password.................................................................................................................................................................7-8

7.7.2 Password Checking.............................................................................................................................................................7-8

7.8 LOAD DEFAULT SETTING.........................................................................................................................................................7-8

7.8.1 Auto Configuration with Optimal Setting.............................................................................................................................7-8

7.8.2 Auto Configuration with Fail Safe Setting...........................................................................................................................7-8

7.9 BIOS EXIT....................................................................................................................................................................................7-8

7.9.1 Save Settings and Exit........................................................................................................................................................7-8

7.9.2 Exit Without Saving .............................................................................................................................................................7-9

7.10 BIOS UPDATE.........................................................................................................................................................................7-9

8. SPECIFICATIONS & SSD TYPES SUPPORTED............................................................................................. 8-1

8.1 SPECIFICATIONS.......................................................................................................................................................................8-1

8.2 SSD TYPES SUPPORTED .........................................................................................................................................................8-1

9. PLACEMENT & DIMENSIONS ........................................................................................................................ 9-1

9.1 PLACEMENT...............................................................................................................................................................................9-1

9.2 DIMENSIONS ..............................................................................................................................................................................9-2

10. PROGRAMMING RS-485 & INDEX ............................................................................................................10-1

10.1 PROGRAMMING RS-485.....................................................................................................................................................10-1

10.2 INDEX....................................................................................................................................................................................10-3

0-2

AR-B1462 User¡¦s Guide

0. PREFACE

0.1 COPYRIGHT NOTICE AND DISCLAIMER

April 1999

Acrosser Technology makes no representations or warranties with respect to the contents hereof and specifically
disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Acrosser
Technology reserves the right to revise this publication and to make changes from time to time in the contents
hereof without obligation of Acrosser Technology to notify any person of such revisions or changes.
Possession, use, or copying of the software described in this publication is authorized only pursuant to a valid
written license from Acrosser or an authorized sublicensor.
(C) Copyright Acrosser Technology Co., Ltd., 1997. All rights Reserved.
Acrosser, ALI, AMI, HMC, IBM PC/AT, Windows 3.1, Windows 95, Windows NT, AMD, Cyrix, Intel…are registered
trademarks.
All other trademarks and registered trademarks are the property of their respective holders.
This document was produced with Adobe Acrobat 3.01.

0.2 WELCOME TO THE AR-B1462 CPU BOARD

This guide introduces the Acrosser AR-B1462 CPU board.
Use the information describes this card’ s functions, features, and how to start, set up and operate your AR­B1462. You also could find general system information here.

0.3 BEFORE YOU USE THIS GUIDE

If you have not already installed this AR-B1462, refer to the Chapter 3, “Setting Up the System” in this guide.
Check the packing list, make sure the accessories in the package.
The AR-B1462 diskette provides the newest information about the card. Please refer to the README.DOC file
of the enclosed utility diskette. It contains the modification and hardware & software information, and adding
the description or modification of product function after manual published.

0.4 RETURNING YOUR BOARD FOR SERVICE

If your board requires servicing, contact the dealer from whom you purchased the product for service information.
If you need to ship your board to us for service, be sure it is packed in a protective carton. We recommend that
you keep the original shipping container for this purpose.

You can help assure efficient servicing of your product by following these guidelines:

1. Include your name, address, telephone and facsimile number where you may be reached during the day.

2. A description of the system configuration and/or software at the time is malfunction.

3. A brief description is in the symptoms.

0.5 TECHNICAL SUPPORT AND USER COMMENTS

User’ s comments are always welcome as they assist us in improving the usefulness of our products and the
understanding of our publications. They form a very important part of the input used for product enhancement
and revision.
We may use and distribute any of the information you supply in any way we believe appropriate without incurring
any obligation. You may, of course, continue to use the information you supply.
If you have suggestions for improving particular sections or if you find any errors, please indicate the manual title
and book number.
Please send your comments to Acrosser Technology Co., Ltd. or your local sales representative.
Internet electronic mail to: [e-mail]

0-3

AR-B1462 User¡¦s Guide

0.6 ORGANIZATION

This information for users covers the following topics (see the Table of Contents for a detailed listing):

l Chapter 1, “Overview”, provides an overview of the system features and packing list.
l Chapter 2, “System Controller” describes the major structure.
l Chapter 3, “Setting Up the System”, describes how to adjust the jumper, and the connectors setting.
l Chapter 4, “CRT/LCD Flat Panel Display”, describes the configuration and installation procedure using

the LCD and CRT display.

l Chapter 5, “Installation”, describes setup procedures including information on the utility diskette.
l Chapter 6, “Solid State Disk”, describes the various type SSDs’ installation steps.
l Chapter 7, “BIOS Console”, providing the BIOS options setting.
l Chapter 8, Specifications & SSD Types Supported
l Chapter 9, Placement & Dimensions
l Chapter 10, Programming RS-485 & Index

0.7 STATIC ELECTRICITY PRECAUTIONS

Before removing the board from its anti-static bag, read this section about static electricity precautions.
Static electricity is a constant danger to computer systems. The charge that can build up in your body may be
more than sufficient to damage integrated circuits on any PC board. It is, therefore, important to observe basic
precautions whenever you use or handle computer components. Although areas with humid climates are much
less prone to static build-up, it is always best to safeguard against accidents may result in expensive repairs. The
following measures should generally be sufficient to protect your equipment from static discharge:

• Touch a grounded metal object to discharge the static electricity in your body (or ideally, wear a grounded
wrist strap).

• When unpacking and handling the board or other system component, place all materials on an antic static
surface.

• Be careful not to touch the components on the board, especially the “golden finger” connectors on the bottom
of every board.

0-4

AR-B1462 User¡¦s Guide

1. OVERVIEW

This chapter provides an overview of your system features and capabilities. The following topics are covered:

l Introduction
l Packing List
l Features

1.1 INTRODUCTION

The AR-B1462 is a disk size industrial grade CPU card that has been designed to withstand continuous operation
in harsh environments. The total on-board memory for the AR-B1462 can be configured from 1MB to 128MB by
using all 72-pin type DRAM SIMM devices.

The 8 layers PCB CPU card is equipped with a IDE HDD interface, a floppy disk drive adapter, 1 parallel port, 4
serial ports and a watchdog timer. Its dimensions are as compact as 146mmX203mm. It highly condensed
features make it an ideal cost/performance solution for high-end commercial and industrial applications where CPU
speeding and mean time between failure is critical.

The AR-B1462 provides 2 bus interfaces, ISA bus and PC/104 compatible expansion bus. Based on the PC/104
expansion bus, you could easy install thousands of PC/104 module from hundreds venders around the world. You
could also directly connect the power supply to the AR-B1462 on-board power connector in standalone
applications.

A watchdog timer has a software programmable time-out interval, is also provided on this CPU card. It ensures
that the system does not hang-up if a program can not execute normally.

A super I/O chip (SMC37C669) is embedded in the AR-B1462 card. It combines functions of a floppy disk drive
adapter, a hard disk drive (IDE) adapter, four serial (with 16C550 UART) adapters and 1 parallel adapter. The I/O
port configurations can be done by set the BIOS setup program.

As an UART, the chip supports serial to parallel conversion on data characters received from a peripheral device
or a MODEM, and parallel to serial conversion on data character received from the CPU. The UART includes a
programmable baud rate generator, complete MODEM control capability and a processor interrupt system. As a
parallel port, the SMC37C669 provides the user with a fully bi-directional parallel centronics-type printer interface.

The special device is the AR-B1462 provides one audio connector, the sound system is built-in 16bit PnP sound
blaster with DOS and Windows drivers. In the same time the AR-B1462 provides network connectors that are 10M
bps NE2000 compatible. We designed the connectors for easily setup.

The super VGA controller supports CRT color monitor, STN, Dual-Scan, TFT, monochrome and colored panels. It
can be connected to create a compact video solution for the industrial environment. And provides the touch screen
header on the serial port 4 for multiple function.

Note: Just the AR-B1462A supported the audio function and supported 2MB on-board VRAM. The AR-B1462 only

supported 1MB on-board VRAM.

1-1

AR-B1462 User¡¦s Guide

1.2 PACKING LIST

The accessories are included with the system. Before you begin installing your AR-B1462 board, take a moment
to make sure that the following items have been included inside the AR-B1462 package.

l The quick setup manual
l 1 AR-B1462 CPU card
l 1 Hard disk drive interface cable
l 1 Floppy disk drive interface cable
l 1 Parallel port interface cable
l 1 AUI cable
l 1 PS/2 mouse cable
l 1 Keyboard adapter
l 1 RJ-45 network cable
l 1 20-pin RS-485/RS-422 adapter cable
l 1 10-pin to DB-15 VGA
l 4 phone-jack to DB-9 adapter
l 4 Software utility diskettes

If use the AR-B1462A CPU card, the card added the audio function the accessories also added as follows.

l 1 AR-B9425 card
l 1 audio adapter cable

1.3 FEATURES

The system provides a number of special features that enhance its reliability, ensure its availability, and improve its

expansion capabilities, as well as its hardware structure.

l All-In-One designed 486DX/DX2/DX4 CPU card.
l Supports 25 to 133 MHz 3.3V/3.45V/5V CPU with voltage regulator.
l Supports ISA bus and PC/104 bus.
l Supports 512KB cache on board.
l Supports two 72-pin DRAM SIMMs up to 128MB DRAM on board.
l Supports D.O.C. up to 72MB.
l Legal AMI BIOS.
l IDE hard disk drive interface.
l Floppy disk drive interface.
l Bi-direction parallel interface.
l 4 serial ports with 16C550 UART.
l Programmable watchdog timer.
l Build-in 16bit PnP sound blaster with DOS and Windows drivers
l Supports 10M bps NE2000 compatible chips.
l On-board built-in buzzer.
l 8 layers PCB.

1-2

AR-B1462 User¡¦s Guide

2. SYSTEM CONTROLLER

This chapter describes the major structure of the AR-B1462 CPU board. The following topics are covered:

l DMA Controller
l Keyboard Controller
l Interrupt Controller
l Real-Time Clock and Non-Volatile RAM
l Timer
l Serial Port
l Parallel Port

2.1 DMA CONTROLLER

The equivalent of two 8237A DMA controllers are implemented in the AR-B1462 board. Each controller is a four­channel DMA device that will generate the memory addresses and control signals necessary to transfer
information directly between a peripheral device and memory. This allows high speeding information transfer with less
CPU intervention. The two DMA controllers are internally cascaded to provide four DMA channels for transfers to
8-bit peripherals (DMA1) and three channels for transfers to 16-bit peripherals (DMA2). DMA2 channel 0 provides
the cascade interconnection between the two DMA devices, thereby maintaining IBM PC/AT compatibility.

Following is the system information of DMA channels:

DMA Controller 1 DMA Controller 2

Channel 0: Spare Channel 4: Cascade for controller 1
Channel 1: IBM SDLC Channel 5: Spare
Channel 2: Diskette adapter Channel 6: Spare
Channel 3: Spare Channel 7: Spare

Table 2-1 DMA Channel Controller

2.2 KEYBOARD CONTROLLER

The 8042 processor is programmed to support the keyboard serial interface. The keyboard controller receives
serial data from the keyboard, checks its parity, translates scan codes, and presents it to the system as a byte data
in its output buffer. The controller can interrupt the system when data is placed in its output buffer, or wait for the
system to poll its status register to determine when data is available.

Data can be written to the keyboard by writing data to the output buffer of the keyboard controller.

Each byte of data is sent to the keyboard controller in series with an odd parity bit automatically inserted. The
keyboard controller is required to acknowledge all data transmissions. Therefore, another byte of data will not be
sent to keyboard controller until acknowledgment is received for the previous byte sent. The “output buffer full”
interruption may be used for both send and receive routines.

2-1

AR-B1462 User¡¦s Guide

2.3 INTERRUPT CONTROLLER

The equivalent of two 8259 Programmable Interrupt Controllers (PIC) are included on the AR-B1462 board. They
accept requests from peripherals, resolve priorities on pending interrupts in service, issue interrupt requests to the
CPU, and provide vectors which are used as acceptance indices by the CPU to determine which interrupt service
routine to execute.

Following is the system information of interrupt levels:

InInterrupt Level
NMI
CTRL1

IRQ 0
IRQ 1
IRQ 2

IRQ 3
IRQ 4
IRQ 5
IRQ 6
IRQ 7

Description
Parity check
CTRL2

System timer interrupt from timer 8254
Keyboard output buffer full

IRQ8 : Real time clock
IRQ9 : Rerouting to INT 0Ah from hardware IRQ2
IRQ10 : Reserved for LAN
IRQ11 : Serial port 4
IRQ12 : spare (PS/2 mouse)
IRQ13 : Math. coprocessor

IRQ14 : Hard disk adapter
IRQ15 : spare (Watchdog Timer)

Serial port 2
Serial port 1
Serial port 3
Floppy disk adapter
Parallel port 1

Figure 2-1 Interrupt Controller

2-2

2.3.1 I/O Port Address Map

Hex Range Device

000-01F DMA controller 1
020-021 Interrupt controller 1
022-023 System -- ALI M1489/M1487

040-04F Timer 1
050-05F Timer 2
060-06F 8042 keyboard/controller
070-071 Real-time clock (RTC), non-maskable interrupt (NMI)
080-09F DMA page registers

0A0-0A1 Interrupt controller 2

0C0-0DF DMA controller 2

0F0 Clear Math Co-processor
0F1 Reset Math Co-processor

0F8-0FF Math Co-processor

170-178 Fixed disk 1

1F0-1F8 Fixed disk 0

201 Game port
208-20A EMS register 0
218-21A EMS register 1

278-27F Parallel printer port 2 (LPT 2)

2E8-2EF Serial port 4 (COM 4)

2F8-2FF Serial port 2 (COM 2)

300-31F Prototype card/streaming type adapter
320-33F LAN adapter
378-37F Parallel printer port 1 (LPT 1)

380-38F SDLC, bisynchronous
3A0-3AF Bisynchronous
3B0-3BF Monochrome display and printer port 3 (LPT 3)
3C0-3CF EGA/VGA adapter
3D0-3DF Color/graphics monitor adapter
3E8-3EF Serial port 3 (COM 3)

3F0-3F7 Diskette controller
3F8-3FF Serial port 1 (COM 1)

Table 2-2 I/O Port Address Map

AR-B1462 User¡¦s Guide

Video – C & T F65550 (PCI bus)
I/O – Two SMC FDC37C669 (ISA bus)
Audio – ESS ES1869S

2.3.2 I/O Channel Pin Assignment (Bus1)

I/O Pin Signal Name Input/Output I/O Pin Signal Name Input/Output

A1 -IOCHCK Input B1 GND Ground
A2 SD7 Input/Output B2 RSTDRV Output
A3 SD6 Input/Output B3 +5V Power
A4 SD5 Input/Output B4 IRQ9 Input
A5 SD4 Input/Output B5 -5V Power
A6 SD3 Input/Output B6 DRQ2 Input
A7 SD2 Input/Output B7 -12V Power
A8 SD1 Input/Output B8 -ZWS Input

A9 SD0 Input/Output B9 +12V Power
A10 -IOCHRDY Input B10 GND Ground
A11 AEN Output B11 -SMEMW Output
A12 SA19 Input/Output B12 -SMEMR Output
A13 SA18 Input/Output B13 -IOW Input/Output

2-3

AR-B1462 User¡¦s Guide

Table 2-3 I/O Channel Pin Assignments

I/O Pin Signal Name Input/Output I/O Pin Signal Name Input/Output

A14 SA17 Input/Output B14 -IOR Input/Output
A15 SA16 Input/Output B15 -DACK3 Output
A16 SA15 Input/Output B16 DRQ3 Input
A17 SA14 Input/Output B17 -DACK1 Output
A18 SA13 Input/Output B18 DRQ1 Input
A19 SA12 Input/Output B19 -REFRESH Input/Output
A20 SA11 Input/Output B20 BUSCLK Output
A21 SA10 Input/Output B21 IRQ7 Input
A22 SA9 Input/Output B22 IRQ6 Input
A23 SA8 Input/Output B23 IRQ5 Input
A24 SA7 Input/Output B24 IRQ4 Input
A25 SA6 Input/Output B25 IRQ3 Input
A26 SA5 Input/Output B26 -DACK2 Output
A27 SA4 Input/Output B27 TC Output
A28 SA3 Input/Output B28 BALE Output
A29 SA2 Input/Output B29 +5V Power
A30 SA1 Input/Output B30 OSC Output
A31 SA0 Input/Output B31 GND Ground

I/O Pin Signal Name Input/Output I/O Pin Signal Name Input/Output

C1 -SBHE Input/Output D1 -MEMCS16 Input

C2 LA23 Input/Output D2 -IOCS16 Input

C3 LA22 Input/Output D3 IRQ10 Input

C4 LA21 Input/Output D4 IRQ11 Input

C5 LA20 Input/Output D5 IRQ12 Input

C6 LA19 Input/Output D6 IRQ15 Input

C7 LA18 Input/Output D7 IRQ14 Input

C8 LA17 Input/Output D8 -DACK0 Output

C9 -MRD16 Input/Output D9 DRQ0 Input
C10 -MWR16 Input/Output D10 -DACK5 Output
C11 SD8 Input/Output D11 DRQ5 Input
C12 SD9 Input/Output D12 -DACK6 Output
C13 SD10 Input/Output D13 DRQ6 Input
C14 SD11 Input/Output D14 -DACK7 Output
C15 SD12 Input/Output D15 DRQ7 Input
C16 SD13 Input/Output D16 +5V Power
C17 SD14 Input/Output D17 -MASTER Input
C18 SD15 Input/Output D18 GND Ground

Table 2-4 I/O Channel Pin Assignments

2-4

AR-B1462 User¡¦s Guide

2.4 REAL-TIME CLOCK AND NON-VOLATILE RAM

The AR-B1462 contains a real-time clock compartment that maintains the date and time in addition to storing
configuration information about the computer system. It contains 14 bytes of clock and control registers and 114
bytes of general purpose RAM. Because of the use of CMOS technology, it consumes very little power and can be
maintained for long period of time using an internal Lithium battery. The contents of each byte in the CMOS RAM
are listed as follows:

Address Description

00 Seconds
01 Second alarm
02 Minutes
03 Minute alarm
04 Hours
05 Hour alarm
06 Day of week
07 Date of month
08 Month
09 Year
0A Status register A

0B Status register B
0C Status register C
0D Status register D
0E Diagnostic status byte
0F Shutdown status byte

10 Diskette drive type byte, drive A and B

11 Fixed disk type byte, drive C

12 Fixed disk type byte, drive D

13 Reserved

14 Equipment byte

15 Low base memory byte

16 High base memory byte

17 Low expansion memory byte

18 High expansion memory byte

19-2D Reserved
2E-2F 2-byte CMOS checksum

30 Low actual expansion memory byte

31 High actual expansion memory byte

32 Date century byte

33 Information flags (set during power on)

34-7F Reserved for system BIOS

Table 2-5 Real-Time Clock & Non-Volatile RAM

2.5 TIMER

The AR-B1462 provides three programmable timers, each with a timing frequency of 1.19 MHz.

Timer 0 The output of this timer is tied to interrupt request 0. (IRQ 0)

Timer 1 This timer is used to trigger memory refresh cycles.

Timer 2 This timer provides the speaker tone.

Application programs can load different counts into this timer to generate various sound frequencies.

2-5

AR-B1462 User¡¦s Guide

2.6 SERIAL PORT

The ACEs (Asynchronous Communication Elements ACE1 to ACE4) are used to convert parallel data to a serial
format on the transmit side and convert serial data to parallel on the receiver side. The serial format, in order of
transmission and reception, is a start bit, followed by five to eight data bits, a parity bit (if programmed) and one,
one and half (five-bit format only) or two stop bits. The ACEs are capable of handling divisors of 1 to 65535, and
produce a 16x clock for driving the internal transmitter logic.

Provisions are also included to use this 16x clock to drive the receiver logic. Also included in the ACE a completed
MODEM control capability, and a processor interrupt system that may be software tailored to the computing time
required handle the communications link.

The following table is summary of each ACE accessible register

DLAB Port Address Register

Receiver buffer (read)0 base + 0
Transmitter holding register (write)

0 base + 1 Interrupt enable
X base + 2 Interrupt identification (read only)
X base + 3 Line control
X base + 4 MODEM control
X base + 5 Line status
X base + 6 MODEM status
X base + 7 Scratched register

1 base + 0 Divisor latch (least significant byte)

1 base + 1 Divisor latch (most significant byte)

Table 2-6 ACE Accessible Registers

(1) Receiver Buffer Register (RBR)

Bit 0-7: Received data byte (Read Only)

(2) Transmitter Holding Register (THR)

Bit 0-7: Transmitter holding data byte (Write Only)

(3) Interrupt Enable Register (IER)

Bit 0: Enable Received Data Available Interrupt (ERBFI)
Bit 1: Enable Transmitter Holding Empty Interrupt (ETBEI)
Bit 2: Enable Receiver Line Status Interrupt (ELSI)
Bit 3: Enable MODEM Status Interrupt (EDSSI)
Bit 4: Must be 0
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0

(4) Interrupt Identification Register (IIR)

Bit 0: “0” if Interrupt Pending
Bit 1: Interrupt ID Bit 0
Bit 2: Interrupt ID Bit 1
Bit 3: Must be 0
Bit 4: Must be 0
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0

2-6

(5) Line Control Register (LCR)

Word Length

Bit 0: Word Length Select Bit 0 (WLS0)
Bit 1: Word Length Select Bit 1 (WLS1)

WLS1 WLS0

0 0 5 Bits
0 1 6 Bits
1 0 7 Bits

1 1 8 Bits
Bit 2: Number of Stop Bit (STB)
Bit 3: Parity Enable (PEN)
Bit 4: Even Parity Select (EPS)
Bit 5: Stick Parity
Bit 6: Set Break
Bit 7: Divisor Latch Access Bit (DLAB)

(6) MODEM Control Register (MCR)

Bit 0: Data Terminal Ready (DTR)
Bit 1: Request to Send (RTS)
Bit 2: Out 1 (OUT 1)
Bit 3: Out 2 (OUT 2)
Bit 4: Loop
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0

AR-B1462 User¡¦s Guide

(7) Line Status Register (LSR)

Bit 0: Data Ready (DR)
Bit 1: Overrun Error (OR)
Bit 2: Parity Error (PE)
Bit 3: Framing Error (FE)
Bit 4: Break Interrupt (BI)
Bit 5: Transmitter Holding Register Empty (THRE)
Bit 6: Transmitter Shift Register Empty (TSRE)
Bit 7: Must be 0

(8) MODEM Status Register (MSR)

Bit 0: Delta Clear to Send (DCTS)
Bit 1: Delta Data Set Ready (DDSR)
Bit 2: Training Edge Ring Indicator (TERI)
Bit 3: Delta Receive Line Signal Detect (DSLSD)
Bit 4: Clear to Send (CTS)
Bit 5: Data Set Ready (DSR)
Bit 6: Ring Indicator (RI)
Bit 7: Received Line Signal Detect (RSLD)

2-7

AR-B1462 User¡¦s Guide

(9) Divisor Latch (LS, MS)

Bit 0: Bit 0 Bit 8
Bit 1: Bit 1 Bit 9
Bit 2: Bit 2 Bit 10
Bit 3: Bit 3 Bit 11
Bit 4: Bit 4 Bit 12
Bit 5: Bit 5 Bit 13
Bit 6: Bit 6 Bit 14
Bit 7: Bit 7 Bit 15

Table 2-7 Serial Port Divisor Latch

LS MS

Desired Baud Rate Divisor Used to Generate 16x Clock

300 384

600 192
1200 96
1800 64
2400 48
3600 32
4800 24
9600 12

14400 8
19200 6
28800 4
38400 3
57600 2

115200 1

2.7 PARALLEL PORT

(1) Register Address

Port Address Read/Write Register

base + 0 Write Output data
base + 0 Read Input data
base + 1 Read Printer status buffer
base + 2 Write Printer control latch

Table 2-8 Registers’ Address

(2) Printer Interface Logic

The parallel portion of the SMC37C669 makes the attachment of various devices that accept eight bits of parallel
data at standard TTL level.

(3) Data Swapper

The system microprocessor can read the contents of the printer’ s Data Latch through the Data Swapper by reading
the Data Swapper address.

2-8

AR-B1462 User¡¦s Guide

(4) Printer Status Buffer

The system microprocessor can read the printer status by reading the address of the Printer Status Buffer. The bit
definitions are described as follows:

1234567 0

X X X

-ERROR
SLCT
PE

-ACK

-BUSY

Figure 2-2 Printer Status Buffer

NOTE: X presents not used.

Bit 7: This signal may become active during data entry, when the printer is off-line during printing, or when the

print head is changing position or in an error state. When Bit 7 is active, the printer is busy and can not
accept data.

Bit 6: This bit represents the current state of the printer’ s ACK signal. A0 means the printer has received the

character and is ready to accept another. Normally, this signal will be active for approximately 5
microseconds before receiving a BUSY message stops.

Bit 5: A1 means the printer has detected the end of the paper.

Bit 4: A1 means the printer is selected.

Bit 3: A0 means the printer has encountered an error condition.

2-9

AR-B1462 User¡¦s Guide

(5) Printer Control Latch & Printer Control Swapper

The system microprocessor can read the contents of the printer control latch by reading the address of printer
control swapper. Bit definitions are as follows:

1234567 0

X X

STROBE
AUTO FD XT
INIT
SLDC IN

IRQ ENABLE

DIR(write only)

Figure 2-3 Bit’ s Definition

NOTE: X presents not used.

Bit 5: Direction control bit. When logic 1, the output buffers in the parallel port are disabled allowing data driven

from external sources to be read; when logic 0, they work as a printer port. This bit is write only.

Bit 4: A1 in this position allows an interrupt to occur when ACK changes from low state to high state.

Bit 3: A1 in this bit position selects the printer.

Bit 2: A0 starts the printer (50 microseconds pulse, minimum).

Bit 1: A1 causes the printer to line-feed after a line is printed.

Bit 0: A0.5 microsecond minimum highly active pulse clocks data into the printer. Valid data must be present for

a minimum of 0.5 microseconds before and after the strobe pulse.

2-10

AR-B1462 User¡¦s Guide

3. SETTING UP THE SYSTEM

This section describes pin assignments for system’ s external connectors and the jumpers setting.

l Overview
l System Setting
l Ethernet Controller

3.1 OVERVIEW

The AR-B1462 is a half size industrial grade CPU card that has been designed to withstand continuous operation
in harsh environments. This section provides hardware’ s jumpers setting, the connectors’ locations, and the pin
assignment.

Note: Just the AR-B1462A supported the audio function and supported 2MB on-board VRAM. The AR-B1462 only

supported 1MB on-board VRAM.

CN2

LED1

U28

80486

U11
U59

U6
U60

1

JP1

1

3

CN10

J10

CN16

LED3

J6

CN5

J2

H6

12

J7

GND

11

P2

P5

P1

P6

5

CN6

CN7

(IDE)

CN8

CN9

P8

P9

P7

P10

M5

A B C

1

H11

2

P12

P11

3

1

J3

CN12

CN15

CN4

J5

J4

MEM1

U17

MEM2

U20

U27

MEM3

MEM4

U30

1

CN3

1

GND 512

LM1

LED2

JP2

JP3

U9

1

P4

P3

2

A B C

1

1

JP6

JP8

1

JP9

2

M1

3

A B C
1
2

M2

3

SW1

A B C

1
2

M3

3

A B C

1
2

M4

3

1
2

1

53

J8

JP4

M6
5V

3V

S
R
Q
P
N
M
L
K
J
H
G
F
E
D
C
B
A

1

1

JP5

1
2

5
3
1

1

1

J9

2

CN11

1

2

2

(LCD)

CN14

111

JP12

JP7

1

CN1

SIM21SIM1
(BANK0)

(BANK1)

J1

H3

171615

141312111098765432

1

1

H7

11

1

JP11JP10

CN13

Figure 3-1 AR-B1462 Jumpers & Connectors Placement

3-1

AR-B1462 User¡¦s Guide

3.2 SYSTEM SETTING

Jumper pins allow you to set specific system parameters. Set them by changing the pin location of jumper blocks.

(A jumper block is a small plastic-encased conductor [shorting plug] that slips over the pins.) To change a jumper
setting, remove the jumper from its current location with your fingers or small needle-nosed pliers. Place the
jumper over the two pins designated for the desired setting. Press the jumper evenly onto the pins. Be careful not
to bend the pins.

We will show the locations of the AR-B1462 jumper pins, and the factory-default setting.

CAUTION: Do not touch any electronic component unless you are safely grounded. Wear a grounded wrist strap

or touch an exposed metal part of the system unit chassis. The static discharges from your fingers can
permanently damage electronic components.

3.2.1 FDD Port Connector (CN8)

The AR-B1462 provides a 34-pin header type connector for supporting up to two floppy disk drives.

To enable or disable the floppy disk controller, please use the BIOS Setup program.

Ground 1 2 DRVEN 0

Ground 3

Ground 5

Ground 7

Ground 9

Ground 11
Ground 13
Ground 15
Ground 17
Ground 19
Ground 21
Ground 23
Ground 25
Ground 27
Ground 29
Ground 31
Ground 33

Figure 3-2 CN8: FDD Port connector

4 Not Used
6 DRVEN 1
8 -INDEX
10 -MTR 0
12 -DRV 1
14 -DRV0
16 -MTR1
18 DIR
20 -STEP
22 -WDATA
24 -WGATE
26 -TRK 0
28 -WRPT
30 -RDATA
32 -HDSEL
34 DSKCHG

3-2

AR-B1462 User¡¦s Guide

3.2.2 Hard Disk (IDE) Connector

(1) 40-Pin Hard Disk (IDE) Connector (CN5)

A 40-pin header type connector (CN5) is provided to interface with up to two embedded hard disk drives (IDE AT
bus). This interface, through a 40-pin cable, allows the user to connect up to two drives in a “daisy chain” fashion.
To enable or disable the hard disk controller, please use the BIOS Setup program. The following table illustrates
the pin assignments of the hard disk drive’ s 40-pin connector.

CN5

-IDERST 1 2 GROUND
D7 3
D6 5
D5 7
D4 9

D3 11
D2 13
D1 15
D0 17

GROUND 19

Not Used 21

-IOW 23

-IOR 25

-IORDY 27

Not Used 29

IRQ 14 31

HDA1 33
HDA0 35

-HDCS0 37

-HDLED 39

Figure 3-3 CN5: Hard Disk (IDE) Connector

4 D8
6 D9
8 D10
10 D11
12 D12
14 D13
16 D14
18 D15
20 Not Used
22 GROUND
24 GROUND
26 GROUND
28 Not Used
30 GROUND
32 -IO16
34 Not Used
36 HDA2
38 -HDCS1
40 GROUND

Caution: When the CN5 is used to connect the hard disk drive, if you find it can not make partition, please
change the hard disk cable to below 35cm in length.

(2) 44-Pin Hard Disk (IDE) Connector (CN7)

AR-B1462 also provides IDE interface 44-pin connector to connect with the hard disk device.

CN7

-IDERST 1 2 GROUND
D7 3
D6 5
D5 7
D4 9

D3 11
D2 13
D1 15
D0 17

GROUND 19

Not Used 21

-IOW 23

-IOR 25

-IORDY 27

Not Used 29

IRQ 14 31

HDA1 33
HDA0 35

-HDCS0 37

-HDLED 39
VCC 41

GROUND 43

Figure 3-4 CN7: Hard Disk (IDE) Connector

4 D8
6 D9
8 D10
10 D11
12 D12
14 D13
16 D14
18 D15
20 Not Used
22 GROUND
24 GROUND
26 GROUND
28 Not Used
30 GROUND
32 -IO16
34 Not Used
36 HDA2
38 -HDCS1
40 GROUND
42 VCC
44 Not Used

3-3

AR-B1462 User¡¦s Guide

3.2.3 Parallel Port Connector (CN9)

To use the parallel port, an adapter cable has to be connected to the CN9 (26-pin header type) connector. This

adapter cable is mounted on a bracket and is included in your AR-B1462 package. The connector for the parallel
port is a 25 pin D-type female connector.

-STB1 1
PD10 3
PD11 5
PD12 7
PD13 9
PD14 11
PD15 13
PD16 15
PD17 17

-ACK1 19

BUSY1 21

PE1 23

SLCT1 25

Figure 3-5 CN9: Parallel Port Connector

2 -AFD1
4 -ERR1
6 -INIT1
8 -SLIN1
10 GND
12 GND
14 GND
16 GND
18 GND
20 GND
22 GND
24 GND
26 GND

CN9 DB-25 Signal CN9 DB-25 Signal

1 1 -Strobe 2 14 -Auto Form Feed
3 2 Data 0 4 15 -Error
5 3 Data 1 6 16 -Initialize
7 4 Data 2 8 17 -Printer Select In

9 5 Data 3 10 18 Ground
11 6 Data 4 12 19 Ground
13 7 Data 5 14 20 Ground
15 8 Data 6 16 21 Ground
17 9 Data 7 18 22 Ground
19 10 -Acknowledge 20 23 Ground
21 11 Busy 22 24 Ground
23 12 Paper 24 25 Ground
25 13 Printer Select 26 -- No Used

Table 3-1 Parallel Port Pin Assignment

3-4

3.2.4 PC/104 Connector

(1) 64 Pin PC/104 Connector Bus A & B (CN11)

AR-B1462 User¡¦s Guide

2

1

64-Pin PC/104 Connector

64

63

Figure 3-6 CN11: 64 Pin PC/104 Connector Bus A & B

CN11

1 2

-IOCHCK --­SD7 --­SD6 --­SD5 --­SD4 --­SD3 --­SD2 --­SD1 --­SD0 ---

-IOCHRDY--­AEN ---

SA19 --­SA18 --­SA17 --­SA16 --­SA15 --­SA14 --­SA13 --­SA12 --­SA11 --­SA10 ---

SA9 --­SA8 --­SA7 --­SA6 --­SA5 --­SA4 --­SA3 --­SA2 --­SA1 --­SA0 ---

GND ---

A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32

B1

--- GND

B2

--- RSTDRV

B3

--- +5 VDC

B4

--- IRQ9

B5

--- -5 VDC

B6

--- DRQ2

B7

--- -12 VDC

B8

--- -ZWS

B9

--- +12 VDC

B10

--- GND

B11

--- -SMEMW

B12

--- -SMEMR

B13

--- -IOW

B14

--- -IOR

B15

--- -DACK3

B16

--- DRQ3

B17

--- -DACK1

B18

--- DRQ1

B19

--- -REFRESH

B20

--- BUSCLK

B21

--- IRQ7

B22

--- IRQ6

B23

--- IRQ5

B24

--- IRQ4

B25

--- IRQ3

B26

--- -DACK2

B27

--- TC

B28

--- BALE

B29

--- +5 VDC

B30

--- OSC

B31

--- GND

B32

--- GND

Figure 3-7 CN11: 64-Pin PC/104 Connector Bus A & B

(2) 40 Pin PC/104 Connector Bus C & D (CN12)

1
2

40 Pin PC/104 Connector

Figure 3-8 CN12: 40 Pin PC/104 Connector Bus C & D

GND ---

-SBHE --­LA23 --­LA22 --­LA21 --­LA20 --­LA19 --­LA18 --­LA17 ---

-MRD16 ---

-MWR16 ---

SD10 --­SD11 --­SD12 --­SD13 --­SD14 --­SD15 ---

Not Used ---

Figure 3-9 CN12: 40-Pin PC/104 Connector Bus C & D

SD8 --­SD9 ---

C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20

CN12

1 2

D1

--- GND

D2

--- -MEM16

D3

--- -IOCS16

D4

--- IRQ10

D5

--- IRQ11

D6

--- IRQ12

D7

--- IRQ15

D8

--- IRQ14

D9

--- -DACK0

D10

--- DRQ0

D11

--- -DACK5

D12

--- DRQ5

D13

--- -DACK6

D14

--- DRQ6

D15

--- -DACK7

D16

--- DRQ7

D17

--- +5 VDC

D18

--- -MASTER

D19

--- GND

D20

--- GND

39
40

3-5

AR-B1462 User¡¦s Guide

(3) I/O Channel Signal Description

Name Description

BUSCLK [Output] The BUSCLK signal of the I/O channel is asynchronous to

RSTDRV [Output] This signal goes high during power-up, low line-voltage or

SA0 - SA19

[Input / Output]

LA17 - LA23

[Input/Output]

SD0 - SD15

[Input/Output]

BALE [Output] The Buffered Address Latch Enable is used to latch SA0 -

-IOCHCK [Input] The I/O Channel Check is an active low signal which

IOCHRDY

[Input, Open collector]

IRQ 3-7, 9-12, 14, 15

-IOR

[Input/Output]

-IOW [Input/Output] The I/O write signal is an active low signal which instructs

-SMEMR [Output] The System Memory Read is low while any of the low 1

-MEMR

[Input/Output]

-SMEMW [Output] The System Memory Write is low while any of the low 1

-MEMW

[Input/Output]

DRQ 0-3, 5-7 [Input] DMA Request channels 0 to 3 are for 8-bit data transfers.

-DACK 0-3, 5-7

[Output]

AEN [output] The DMA Address Enable is high when the DMA controller

-REFRESH

[Input/Output]

TC [Output] Terminal Count provides a pulse when the terminal count

SBHE [Input/Output] The System Bus High Enable indicates the high byte SD8 -

the CPU clock.

hardware reset
The System Address lines run from bit 0 to 19. They are
latched onto the falling edge of "BALE"
The Unlatched Address line run from bit 17 to 23

System Data bit 0 to 15

SA19 onto the falling edge. This signal is forced high
during DMA cycles

indicates that a parity error exist on the I/O board
This signal lengthens the I/O, or memory read/write cycle,
and should be held low with a valid address
The Interrupt Request signal indicates I/O service request

[Input]

attention. They are prioritized in the following sequence :
(Highest) IRQ 9, 10, 11, 12, 13, 15, 3, 4, 5, 6, 7 (Lowest)
The I/O Read signal is an active low signal which instructs
the I/O device to drive its data onto the data bus

the I/O device to read data from the data bus

mega bytes of memory are being used
The Memory Read signal is low while any memory location
is being read

mega bytes of memory is being written
The Memory Write signal is low while any memory location
is being written

DMA Request channels 5 to 7 are for 16-bit data transfers.
DMA request should be held high until the corresponding
DMA has been completed. DMA request priority is in the
following sequence:(Highest) DRQ 0, 1, 2, 3, 5, 6, 7
(Lowest)
The DMA Acknowledges 0 to 3, 5 to 7 are the
corresponding acknowledge signals for DRQ 0 to 3 and 5
to 7

is driving the address bus. It is low when the CPU is driving
the address bus
This signal is used to indicate a memory refresh cycle and
can be driven by the microprocessor on the I/O channel

for any DMA channel is reached

SD15 on the data bus

3-6

Name Description

-MASTER [Input] The MASTER is the signal from the I/O processor which

gains control as the master and should be held low for a
maximum of 15 microseconds or system memory may be
lost due to the lack of refresh

-MEMCS16

[Input, Open collector]

-IOCS16

[Input, Open collector]

OSC [Output] The Oscillator is a 14.31818 MHz signal used for the color

-ZWS

[Input, Open collector]

Table 3-2 I/O Channel Signal’ s Description

The Memory Chip Select 16 indicates that the present data
transfer is a 1-wait state, 16-bit data memory operation
The I/O Chip Select 16 indicates that the present data
transfer is a 1-wait state, 16-bit data I/O operation

graphic card
The Zero Wait State indicates to the microprocessor that
the present bus cycle can be completed without inserting
additional wait cycle

3.2.5 LED Header (LM1)

The AR-B1462 provides one module for various LEDs’ headers.

LM1

1
3
5
7

2

+5V Power LED Header

4

Watchdog LED Header

6

LAN LED Header

8

HDD LED Header

AR-B1462 User¡¦s Guide

Figure 3-10 LM1: LED Header

3.2.6 Serial Port

(1) RS-422/RS-485 Select

SW1-9 & SW1-10 selects COM B port, and adjusts the CN15 connector is RS-485 or RS-232C. M5 selects COM A
port for using DB2 for RS-232C or connects External RS-485.

(A) COM-A RS-485/RS-422 Adapter Select (M5)

A B C

1
2
3

RS-422

Factory Preset

Figure 3-11 M5: COM-A RS-485/RS-422 Adapter Select

(B) Terminal Select (M5)

CBA CBA

1
2
3

A B C

1
2
3

RS-485

1
2
3

OFF

Factory-Default Setting

Figure 3-12 M5: Terminal Select

ON

3-7