Processor

80486SX/80486DX

Processor Speed

25/33MHz

Chip Set

OPTI

Max. Onboard DRAM

36MB

Cache

64/128KB (on optional cache module)

BIOS

NEC (Flash EEPROM)

Dimensions

330mm x 218mm

I/O Options

Bus mouse port, floppy drive interface, headphone jack, IDE interface, microphone jack, parallel port, proprietary cache module socket, proprietary VGA feature card socket, serial ports (2), VGA port

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Proprietary cache module

CA1

External battery

JP8

Floppy drive interface

J1

Parallel port

P1

IDE interface

J2

Serial port 1

P2

Proprietary VGA feature card

J3

VGA port

P4

Drive power

J6

Serial port 2 (optional)

P5

IDE interface LED (not used)

JP2

Indicator panel assembly

P6

Speaker (not used)

JP6

Riser Card

R1

Note: The bus mouse port, headphone jack, and microphone jack are connected to the main board via the indicator panel assembly connector (P6).

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Parallel port (P1) interrupt select IRQ7

JP7

pins 2 & 3 closed

Parallel port (P1) interrupt select IRQ5

JP7

pins 1 & 2 closed

»

JP9

pins 1 & 2 closed

CPU type select 80486DX/33MHz

JP9

pins 2 & 3 closed

»

On board video enabled

SW1/1

Off

On board video disabled

SW1/1

On

»

Floppy drive interface enabled

SW1/2

Off

Floppy drive interface disabled

SW1/2

On

»

Password enabled

SW1/3

Off

Password disabled

SW1/3

On

»

BIOS flash reprogramming enabled

SW1/4

Off

BIOS flash reprogramming disabled

SW1/4

On

»

Factory configured - do not alter

SW2

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

4MB

NONE

NONE

8MB

4MB

(4) 1M x 9

NONE

12MB

4MB

(4) 1M x 9

(4) 1M x 9

20MB

4MB

(4) 4M x 9

NONE

24MB

4MB

(4) 1M x 9

(4) 4M x 9

36MB

4MB

(4) 4M x 9

(4) 4M x 9

Note: Bank 0 is factory installed and is not configurable. The location of bank 0 is unidentified.