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386SX-S NON CACHE MAINBOARD MODEL 3

UNIDENTIFIED

386SX-S NON CACHE MAINBOARD MODEL 3

Processor

80386SX/CX486SLC

Processor Speed

25/33/40MHz

Chip Set

Unidentified

Max. Onboard DRAM

16MB

Cache

None

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Turbo LED

JP7

Turbo switch

JP5

Power LED & keylock

JP8

Reset switch

JP6

Speaker

JP9

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

NPU synchronous with CPU

JP4

pins 1 & 2 closed

 

NPU asynchronous with CPU

JP4

pins 2 & 3 closed

CPU speed select 40MHz

JP10

pins 1 & 2 closed

 

CPU speed select 33MHz

JP10

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

16MB

(2) 4M x 9

(2) 4M x 9