HwMuseum | Index

J-MARK COMPUTER CORPORATION

386DX 25/40 NON CACHE

Processor

80386DX

Processor Speed

25/40MHz

Chip Set

CGS

Max. Onboard DRAM

32MB

Cache

None

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Reset switch

JP9

Speaker

JP7

Turbo switch

JP10

Power LED & keylock

JP8

Turbo LED

JP11

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

JP3

pins 1 & 2 closed

 

CMOS memory clear

JP3

pins 2 & 3 closed

»

NPU synchronous with CPU

JP5

Open

 

NPU asynchronous with CPU

JP5

Closed

»

Monitor type select color

JP6

Closed

 

Monitor type select monochrome

JP6

Open

»

Turbo switch enabled

JP10

Closed

 

Turbo switch disabled

JP10

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 1M x 9

(4) 256K x 9

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 256K x 9

(4) 4M x 9

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 4M x 9

(4) 1M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9