UNIDENTIFIED

OPTI 80386 SYSTEM BOARD

Processor

80386DX

Processor Speed

25/33MHz

Chip Set

Unidentified

Max. Onboard DRAM

16MB

Cache

32/64KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387SX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

J14

Power LED & keylock

J18

Reset switch

J16

Speaker

J19

Turbo switch

J17

Riser Card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

J2

Closed

 

Monitor type select monochrome

J2

Open

»

Battery type select internal

J5

pins 2 & 3 closed

 

Battery type select external

J5

pins 1 & 4 closed

»

Weitek 3167 installed

J6

Closed

 

Weitek 3167 not installed

J6

Open

»

Cache type select pipeline

J7

pins 2 & 3 closed

 

Cache type select non-pipeline

J7

pins 1 & 2 closed

»

NPU enabled

J8

pins 1 & 2 closed

 

NPU disabled

J8

pins 2 & 3 closed

»

Factory configured - do not alter

J10

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

5MB

(4) 256K x 9

(4) 1M x 9

NONE

NONE

5MB

(4) 1M x 9

(4) 256K x 9

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

6MB

(4) 256K x 9

(4) 1M x 9

(4) 256K x 9

NONE

6MB

(4) 1M x 9

(4) 256K x 9

(4) 256K x 9

NONE

7MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 256K x 9

7MB

(4) 256K x 9

(4) 1M x 9

(4) 256K x 9

(4) 256K x 9

7MB

(4) 1M x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

9MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

NONE

9MB

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

NONE

9MB

(4) 1M x 9

(4) 256K x 9

(4) 1M x 9

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

10MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

10MB

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

(4) 256K x 9

10MB

(4) 1M x 9

(4) 256K x 9

(4) 1M x 9

(4) 256K x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

13MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

13MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 256K x 9

13MB

(4) 1M x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

Note: Bank 2 and Bank 3 are on the riser card.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG0

TAG1

32KB

(4) 8K x 8

NONE

(3) 8K x 8

NONE

64KB

(4) 8K x 8

(4) 8K x 8

(3) 8K x 8

(1) 8K x 8

EXTERNAL MEMORY CARD CONFIGURATION

Select

J15

32KB installed

pins 1 & 2 closed

64KB installed

pins 2 & 3 closed

Not installed

Open

CACHE SIZE CONFIGURATION

Size

J9

J13

32KB

pins 1 & 2 closed

pins 1 & 2 closed

64KB

pins 2 & 3 closed

pins 2 & 3 closed

CLOCK SELECT CONFIGURATION

Select

J3

J4

External

pins 1 & 2 closed

pins 1 & 2 closed

Internal

pins 2 & 3 closed

pins 2 & 3 closed