UNIDENTIFIED

U386

Processor

80386DX

Processor Speed

33/40MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

SRAM Cache

32/128KB

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

NONE

NPU Options

80387

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Reset switch

J4

Turbo LED

J2

Speaker

J5

Turbo switch

J3

Power LED & keylock

J6

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation

W1

closed

 

CMOS memory clear

W1

open

»

Monitor type select color

W2

closed

 

Monitor type select monochrome

W2

open

»

NPU disabled

W4

open

 

NPU enabled

W4

closed

»

Parity check enabled

W16

pins 2 & 3 closed

 

Parity check disabled

W16

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

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) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

SRAM JUMPER CONFIGURATION

Jumper

32KB

128KB

W8

pins 1 & 2 closed

pins 2 & 3 closed

W9

pins 1 & 2 closed

pins 2 & 3 closed

W10

pins 1 & 2 closed

pins 2 & 3 closed

W11

pins 1 & 2 closed

pins 2 & 3 closed

W12

pins 2 & 3 closed

pins 2 & 3 closed

W13

pins 1 & 2 closed

pins 1 & 2 closed

W14

pins 1 & 2 closed

pins 1 & 2 closed

W15

open

pins 1 & 2 closed

SRAM CONFIGURATION

Size

Cache SRAM

TAG

32KB

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

(1) 8K x 8