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Device Type

Mainboard

Processor

80486DX/SGS486DX2V/AM486DX2SV/80486DX2/SGS486DX4V/ AM486DX4SV/80486DX4/AM X5

Processor Speed

25/33/50(internal)/66(internal)/75(internal)/100(internal)/133(internal)MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

64MB

Maximum Video Memory

Unidentified

Cache

Unidentified

BIOS

Unidentified

Dimensions

Unidentified

I/O Options

Floppy drive interface, green PC connector, IDE interface, SCSI interface, parallel port, PS/2 mouse interface, serial ports (2), VGA feature connector, VGA port, flat panel connector, PC/104 connectors (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

B1

PS/2 mouse interface

J9

IDE interface

J1

SCSI interface LED

J10

Floppy drive interface

J2

Green PC connector

J11

Multi function connector

J3

J12

Serial port 2

J4

Power connector

J13

Serial port 1

J5

VGA port

J15

VGA feature connector

J6

Parallel port

J18

SCSI interface

J7

PC/104 connector (16-bit)

P1

Flat panel connector

J8

PC/104 connector (8-bit)

P2

USER CONFIGURABLE SETTINGS

Function

Label

Position

�

IOCHRDY signal to IDE interface disabled

W9

Open

IOCHRDY signal to IDE interface enabled

W9

Closed

�

Flat panel voltage select 5v

W10

Pins 1 & 2 closed

Flat panel voltage select 3.3v

W10

Pins 2 & 3 closed

�

VGA select ready

W11

Pins 1 & 2 closed

VGA select local ready

W11

Pins 2 & 3 closed

�

Serial mode select normal

W23/pins 1 & 2

Open

Serial mode select download

W23/pins 1 & 2

Closed

�

Standard mode enabled

W23/pins 3 & 4

Open

VT100 mode enabled

W23/pins 3 & 4

Closed

�

Teknor extension enabled

W23/pins 5 & 6

Open

Teknor extension disabled

W23/pins 5 & 6

Closed

�

On board video enabled

W23/pins 7 & 8

Open

On board video disabled

W23/pins 7 & 8

Closed

�

BIOS boot select normal boot

W25

Open

BIOS boot select emergency boot

W25

Closed

�

Watchdog timer enabled

W26

Closed

Watchdog timer disabled

W26

Open

�

Power fail monitoring disabled

W27

Open

Power fail monitoring enabled

W27

Closed

�

Battery type select internal

W28

Pins 1 & 2 closed

Battery type select external

W28

Pins 2 & 3 closed

�

Power failure detection source external power fail (pin 6 on J13)

W29

Pins 1 & 2 closed

Power failure detection source internal/external battery <3v

W29

Pins 2 & 3 closed

SIMM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 36

None

2MB

(1) 256K x 36

(1) 256K x 36

3MB

(1) 512K x 36

(1) 256K x 36

4MB

(1) 1M x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

8MB

(1) 2M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

48MB

(1) 8M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 8M x 36

64MB

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Note: Cache is factory installed and is not configurable. The size is unidentified.

VIDEO MEMORY CONFIGURATION

Note: Video memory is factory installed and is not configurable. The size is unidentified.

CPU SPEED SELECTION

Speed

W3

W24

25MHz

Open

Pins 3 & 4 closed

33MHz

Open

Pins 1 & 2 closed

50iMHz

Open

Pins 3 & 4 closed

66iMHz

Open

Pins 1 & 2 closed

75iMHz

Open

Pins 3 & 4 closed

100iMHz

Open

Pins 1 & 2 closed

133iMHz

Open

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

W16

W17

W18

W19

80486DX

Open

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

SGS486DX2V 2x (WB)

Closed

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

SGS486DX2V 2x (WT)

Closed

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

AM486DX2SV 2x (WB)

Closed

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

AM486DX2SV 2x (WT)

Closed

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

80486DX2

Open

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

SGS486DX4V 3x (WB)

Open

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

SGS486DX4V 3x (WT)

Open

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

AM486DX4SV 2x (WB)

Closed

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

AM486DX4SV 2x (WT)

Closed

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

AM486DX4SV 3x (WB)

Open

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

AM486DX4SV 3x (WT)

Open

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

80486DX4 2x (WB)

Closed

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

80486DX4 2x (WT)

Closed

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

80486DX4 3x (WB)

Open

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

80486DX4 3x (WT)

Open

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

AM X5-133 3x (WB)

Open

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

AM X5-133 3x (WT)

Open

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

AM X5-133 4x (WB)

Closed

Pins 2 & 3 closed

Closed

Pins 2 & 3 closed

AM X5-133 4x (WT)

Closed

Pins 1 & 2 closed

Open

Pins 1 & 2 closed

CPU VOLTAGE SELECTION

Voltage

W1

3.3v

Pins 1 & 2 closed

5v

Pins 2 & 3 closed

SERIAL PORT 2 LOOPBACK SELECTION

Setting

W7

W8

Normal

Open

Open

Loopback

Closed

Closed

SERIAL PORT 2 SELECTION

Setting

W6

W12

W13

W14

W15

RS-232

Open

1 & 2

1 & 2

1 & 2

1 & 2

RS-485

Closed

2 & 3

2 & 3

2 & 3

2 & 3

FLOPPY DRIVE EDOUT SELECTION

Setting

W21

Left to software

Open

Ground to pin 17 on J2

Pins 2 & 4 closed

Ground to pin 29 on J2

Pins 3 & 4 closed

EDOUT to pin 29 on J2

Pins 1 & 3 closed

EDOUT to pin 17 on J2

Pins 1 & 2 closed

FLOPPY DRIVE HDOUT SELECTION

Setting

W20

Left to software

Open

Ground to pin 27 on J2

Pins 2 & 4 closed

Ground to pin 33 on J2

Pins 3 & 4 closed

HDOUT to pin 33 on J2

Pins 1 & 3 closed

HDOUT to pin 27 on J2

Pins 1 & 2 closed

BASE I/O SELECTION

Address

W22

190H

Pins 1 & 2, 3 & 4 closed

290H

Pins 1 & 2 closed

390H

Pins 3 & 4 closed

390H

Open

FEATURE CONNECTOR SELECTION

Setting

W4

W5

Disabled

Closed

Open

Enabled

Open

Closed

V-port enabled

Open

Open

SCSI TERMINATION SELECTION

Setting

W2

Controlled by hardware

Pins 1 & 2 closed

Controlled by software

Pins 2 & 3 closed

Disabled by hardware

Open