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MB-486 DX-33 UM

JPN CORPORATION

MB-486 DX-33 UM

   

Processor

80486SX/80487SX/80486DX

Processor Speed

33MHz

Chip Set

UMC

Max. Onboard DRAM

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

Reset switch

J4

Speaker

J2

Turbo LED

J5

Turbo switch

J3

External battery

J6

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select CGA

W18

Closed

 

Monitor type select monochrome/EGA/VGA

W18

Open

Battery select internal

W22

Closed

 

Battery select external

W22

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB 1

(4) 256K x 9

NONE

NONE

NONE

1MB 2

NONE

NONE

(1) 256K x 36

NONE

2MB 1

(4) 256K x 9

(4) 256K x 9

NONE

NONE

2MB 2

NONE

NONE

(1) 256K x 36

(1) 256K x 36

3MB 1

(4) 256K x 9

(4) 256K x 9

(1) 256K x 36

NONE

3MB 2

(4) 256K x 9

NONE

(1) 256K x 36

(1) 256K x 36

4MB 1

(4) 256K x 9

(4) 256K x 9

(1) 256K x 36

(1) 256K x 36

4MB 2

(4) 256K x 9

(4) 256K x 9

(1) 256K x 36

(1) 256K x 36

4MB 1

(4) 1M x 9

NONE

NONE

NONE

4MB 2

NONE

NONE

(1) 1M x 36

NONE

5MB 1

(4) 256K x 9

(4) 1M x 9

NONE

NONE

5MB 2

NONE

NONE

(1) 256K x 36

(1) 1M x 36

6MB 1

(4) 256K x 9

(4) 256K x 9

(1) 1M x 36

NONE

6MB 2

(4) 1M x 9

NONE

(1) 256K x 36

(1) 256K x 36

8MB 1

(4) 1M x 9

(4) 1M x 9

NONE

NONE

8MB 2

NONE

NONE

(1) 1M x 36

(1) 1M x 36

9MB 1

(4) 256K x 9

(4) 1M x 9

(1) 1M x 36

NONE

9MB 2

(4) 1M x 9

NONE

(1) 256K x 36

(1) 1M x 36

10MB 1

(4) 256K x 9

(4) 256K x 9

(1) 1M x 36

(1) 1M x 36

10MB 2

(4) 1M x 9

(4) 1M x 9

(1) 256K x 36

(1) 256K x 36

12MB 1

(4) 1M x 9

(4) 1M x 9

(1) 1M x 36

NONE

12MB 2

(4) 1M x 9

NONE

(1) 1M x 36

(1) 1M x 36

16MB 1

(4) 1M x 9

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

16MB 2

(4) 1M x 9

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

16MB 1

(4) 4M x 9

NONE

NONE

NONE

16MB 2

NONE

NONE

(1) 4M x 36

NONE

20MB 1

(4) 1M x 9

(4) 4M x 9

NONE

NONE

20MB 2

NONE

NONE

(1) 1M x 36

(1) 4M x 36

24MB 1

(4) 1M x 9

(4) 1M x 9

(1) 4M x 36

NONE

24MB 2

(4) 4M x 9

NONE

(1) 1M x 36

(1) 1M x 36

32MB 1

(4) 4M x 9

(4) 4M x 9

NONE

NONE

32MB 2

NONE

NONE

(1) 4M x 36

(1) 4M x 36

40MB 1

(4) 1M x 9

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

40MB 2

(4) 4M x 9

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

Note 1 :On jumpers W12, W13, W15, and W16 - pins 1 & 2 should be in the closed position.

Note 2 :On jumpers W12, W13, W15, and W16 - pins 2 & 3 should be in the closed position.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

Dirty Bit (U10)

TAG (U11)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 16K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 16K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

W2

W3

W4

W5

W6

W7

W8

W9

64KB

1 & 2

1 & 2

Open

1 & 2

Open

Open

Open

Open

128KB

2 & 3

1 & 2

1 & 2

2 & 3

Closed

Open

Open

Open

256KB

2 & 3

2 & 3

2 & 3

1 & 2

Closed

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

W10

W11

80486SX

Open

pins 2 & 3 closed

80487SX

pins 2 & 3 closed

pins 1 & 2 and 3 & 4 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 and 3 & 4 closed