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386DX W/B

UNIDENTIFIED

386DX W/B

Processor

80386DX/CX486DLC

Processor Speed

33/40MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

CX487DLC

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo switch

JP11

Power LED & keylock

J18

Turbo LED

JP12

Speaker

J19

Reset switch

SW1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP3

pins 2 & 3 closed

 

CMOS memory clear

JP3

pins 1 & 2 closed

Monitor type select color

JP4

Closed

 

Monitor type select monochrome

JP4

Open

CPU clock type select single phase

JP7

pins 2 & 3 closed

 

CPU clock type select double phase

JP7

pins 1 & 2 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) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP8

JP9

JP10

JP17

JP18

64KB

Open

Open

Open

2 & 3

Open

Open

128KB

Closed

Closed

Open

1 & 2

Open

Closed

256KB

Closed

Closed

Closed

2 & 3

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP1

JP5

JP13

Cyrix

Closed

Closed

Closed

Intel

Open

Open

Open

Note: The location of JP1 is unidentified.