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386DX NON-CACHE MAINBOARD (PQFP)

UNIDENTIFIED

386DX NON-CACHE MAINBOARD (PQFP)

Processor

80386DX

Processor Speed

25/33/40MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

64MB (32MB on external memory cards)

Maximum Video Memory

None

Cache

None

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

External memory cards (2)

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Turbo switch

JP10

Speaker

JP7

Turbo LED

JP11

Power LED & keylock

JP8

External memory card

SL1 & SL2

Reset switch

JP9

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

CMOS memory normal operation

JP3

Pins 1 & 2 closed

 

CMOS memory clear

JP3

Pins 2 & 3 closed

 

Monitor type select color

JP6

Closed

 

Monitor type select monochrome

JP6

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) 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

Note: The location of banks 0 & 1 are unidentified. To increase memory beyond 32MB, install external memory card(s).