JATON CORPORATION

JAM-4001

Processor

80486SX/80487SX/80486DX

Processor Speed

33/40/50MHz

Chip Set

UMC

Max. Onboard DRAM

Model 1: 10MB

Model 2: 40MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo switch

J4

Speaker

J2

Turbo LED

J5

Reset switch

J3

External battery

J8

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

J7

Closed

 

Monitor type select monochrome

J7

Open

»

Battery type select internal

J8

pins 1 & 2 closed

 

Battery type select external

J8

Closed

DRAM CONFIGURATION (MODEL 1)

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(8) 44256

NONE

NONE

NONE

2MB

(8) 44256

(4) 256K x 9

NONE

NONE

3MB

(8) 44256

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(8) 44256

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

5MB

(8) 44256

(4) 1M x 9

NONE

NONE

6MB

(8) 44256

(4) 256K x 9

(4) 1M x 9

NONE

9MB

(8) 44256

(4) 1M x 9

(4) 1M x 9

NONE

10MB

(8) 44256

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

Note:Bank 0 is factory installed and is not configurable.

DRAM CONFIGURATION (MODEL 2)

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(8) 441000

NONE

NONE

NONE

8MB

(8) 441000

(4) 1M x 9

NONE

NONE

12MB

(8) 441000

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(8) 441000

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

20MB

(8) 441000

(4) 4M x 9

NONE

NONE

24MB

(8) 441000

(4) 1M x 9

(4) 4M x 9

NONE

36MB

(8) 441000

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(8) 441000

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

Note:Bank 0 is factory installed and is not configurable.

CACHE CONFIGURATION

Size

Bank A

Bank B

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(3) 16K x 4

128KB

(4) 32K x 8

NONE

(3) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(3) 16K x 4

CACHE JUMPER CONFIGURATION

Size

S1

S2

S3

S4

S5

64KB

1 & 2

1 & 2

1 & 2

Open

1 & 2

128KB

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

256KB

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

W4

W5

W6

W10

W11

80486SX

1 & 2

1 & 2

1 & 2

Closed

Open

80487SX

Open

Open

2 & 3

Open

Closed

80486DX

1 & 2

2 & 3

1 & 2

Closed

Open

Note: Pins designated should be in the closed position.