...because we can't all be on the bleeding edge...





486WB CACHE

UNIDENTIFIED

486WB CACHE

Processor

80486SX/80487SX/80486DX

Processor Speed

25/33MHz

Chip Set

OPTI

Max. Onboard DRAM

64MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J3

Turbo switch

JP18

External battery

J7

Turbo LED

JP20

Power LED & keylock

J8

Reset switch

JP21

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CPU speed select forced high

JP18

Closed

 

CPU speed select switchable at keyboard

JP18

Open

Power good signal detect from power supply

JP23

pins 1 & 2 closed

 

Power good signal detect from board

JP23

pins 2 & 3 closed

CMOS memory normal operation

JP24

pins 2 & 3 closed

 

CMOS memory clear

JP24

pins 1 & 2 closed

Monitor type select color

JP25

pins 2 & 3 closed

 

Monitor type select monochrome

JP25

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

4MB

(4) 1M x 9

NONE

NONE

NONE

5MB

(4) 256K x 9

(4) 1 M x 9

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

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

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M 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

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16-B

(4) 4M x 9

NONE

NONE

NONE

20MB

(4) 1M x 9

(4) 4M x 9

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

28MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

52MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

64KB

(4) 8K x 8

(4) 8K x 8

NONE

NONE

128KB

(4) 8K x 8

(4) 8K x 8

(4) 8K x 8

(4) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

NONE

NONE

512KB

(4) 32K x 8

(4) 32K x 8

(4) 32K x 8

(4) 32K x 8

CACHE TAG CONFIGURATION

Size

U27

U36

U37

64KB

(1) 8K x 8

(1) 16K x 8

NONE

128KB

(1) 8K x 8

(1) 16K x 8

NONE

256KB

(1) 32K x 8

NONE

(1) 64K x 8

512KB

(1) 32K x 8

NONE

(1) 64K x 8

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

JP11

JP12

JP13

64KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

128KB

1 & 2

1 & 2

2 & 3

2 & 3

2 & 3

256KB

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

512KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP3

80486SX

pins 2 & 3 closed

pins 2 & 3 closed

Open

80487SX

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed