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MS-4109

UNIDENTIFIED

MS-4109

Processor

80486SX/80487SX/80486DX

Processor Speed

16/20/25/33/50MHz

Chip Set

Contaq

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J3 pins 1 - 5

Reset switch

J3 pins 19 - 20

Speaker

J3 pins 7 - 10

Auxiliary keyboard connector

J4

Turbo LED

J3 pins 12 - 13

External battery

JP2

Turbo switch

J3 pins 15 - 17

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

JP1

Open

 

Monitor type select CGA

JP1

Closed

Battery type select internal

JP2

pins 2 & 3 closed

 

Battery type select external

JP2

pins 1 & 4 closed

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

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K 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

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP8

64KB

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

256KB

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

CPU TYPE CONFIGURATION

Type

JP7

80486SX

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

80487SX

pins 1 & 2, 3 & 4, 9 & 10, 11 & 12 closed

80486DX

pins 1 & 2, 3 & 4, 13 & 14, 15 & 16 closed

CPU SPEED CONFIGURATION

Speed

JP9

16MHz

pins 1 & 2 closed

20MHz

pins 1 & 2 closed

25MHz

pins 2 & 3 closed

33MHz

pins 2 & 3 closed

50MHz

pins 2 & 3 closed

CPU CLOCK SPEED CONFIGURATION

Speed

JP3

JP5

JP6

16MHz (asynchronous)

pins 2 & 3 closed

Open

Open

20MHz (synchronous)

pins 1 & 2 closed

Open

Open

25MHz (synchronous)

pins 1 & 2 closed

Closed

Open

33MHz (synchronous)

pins 1 & 2 closed

Open

Closed

50MHz (synchronous)

pins 1 & 2 closed

Closed

Closed