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ISA-S486

UNIDENTIFIED

ISA-S486

Processor

80486SX/80486DX

Processor Speed

16/20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

JP5

Speaker

JP16

Turbo switch

JP10

External battery

JP17

Turbo LED

JP11

Reset switch

JP19

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

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) 1M x 9

(4) 256K x 9

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

17MB

(4) 256K x 9

(4) 4M x 9

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

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP22

JP23

JP24

JP25

JP34

64KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

128KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION

Size

JP100

JP101

64KB

2 & 4, 6 & 8, 10 & 12, 14 & 16

2 & 4, 6 & 8, 10 & 12, 14 & 16

128KB

1 & 3, 5 & 7, 9 & 11, 13 & 15

1 & 3, 5 & 7, 9 & 11, 13 & 15

256KB

2 & 4, 6 & 8, 10 & 12, 14 & 16

2 & 4, 6 & 8, 10 & 12, 14 & 16

1MB

2 & 4, 6 & 8, 10 & 12, 14 & 16

2 & 4, 6 & 8, 10 & 12, 14 & 16

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

CPU Type

JP12

JP13

JP14

80486SX

Open

pins 2 & 3 closed

Open

80486DX

Closed

pins 1 & 2 closed

Closed