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386 MAINBOARD

CORE PACIFIC ELECTRONICS, INC

386 MAINBOARD

Processor

80386DX

Processor Speed

33/40MHz

Chip Set

Forex

Max. Onboard DRAM

32MB

Cache

32/64/128KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Power LED & keylock

JP9

Turbo LED

JP7

Speaker

JP10

Reset switch

JP8

Turbo switch

JP11

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

NPU mode select synchronous with CPU

JP5

pins 1 & 2 closed

 

NPU mode select synchronous with oscillator installed at Y1

JP5

pins 2 & 3 closed

CPU speed select forced slow

JP11

Closed

 

CPU speed select switchable at keyboard

JP11

Open

External battery select 3.6VDC

JP200

Closed

 

External battery select 6.0VDC

JP200

Open

Battery type select internal

JP201

Closed

 

Battery type select external

JP201

Open

CMOS memory normal operation

JP202

Open

 

CMOS memory clear

JP202

Closed

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) 256K x 9

(4) 1 M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

U15

U16

32KB

(4) 8K x 8

NONE

NONE

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 8K x 8

128KB

NONE

(4) 32K x 8

(1) 32K x 8

NONE

CACHE JUMPER CONFIGURATION

Size

JP6

32KB

pins 1 & 2 closed

64KB

pins 2 & 3 closed

128KB

pins 2 & 3 closed