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TOPCAT 386/486DX

UNIDENTIFIED

TOPCAT 386/486DX

Processor

80386DX/80486DX

Processor Speed

25/33MHz

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

JP31

Reset switch

JP65

Power LED & keylock

JP42

Turbo switch

JP66

External battery

JP60

Turbo LED

JP67

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Pipeline mode disabled

JP1

Open

 

Pipeline mode enabled

JP1

Closed

Ready source type select NPX ready

jp2

pins 1 & 2 closed

 

Ready source type select 330 ready

jp2

pins 2 & 3 closed

Clock speed control select keyboard

JP10

pins 1 & 2 closed

 

Clock speed control select external switch

JP10

pins 2 & 3 closed

Parity check disabled

JP32

Open

 

Parity check enabled

JP32

Closed

 

Monitor type select monochrome

JP41

Open

 

Monitor type select color

JP41

Closed

Battery type select internal

JP61

pins 1 & 2 closed

 

Battery type select external

JP61

pins 2 & 3 closed

Power good signal detect from power supply

JP62

pins 1 & 2 closed

 

Power good signal detect from board

JP62

pins 2 & 3 closed

CMOS memory normal operation

JP68

pins 1 & 2 closed

 

CMOS memory clear

JP68

pins 3 & 4 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

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

5MB

(4) 256K x 9

(4) 1M 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) 1M x 9

(4) 1M x 9

(4) 256K 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

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

17MB

(4) 256K x 9

(4) 4M x 9

NONE

NONE

18MB

(4) 256K x 9

(4) 256K x 9

(4) 4M x 9

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

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

33MB

(4) 4M x 9

(4) 4M x 9

(4) 256K x 9

NONE

34MB

(4) 256K x 9

(4) 256K x 9

(4) 4M x 9

(4) 4M x 9

36MB

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

NONE

40MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

CPU TYPE CONFIGURATION

Type

JP81

JP83

JP84

JP85

JP86

80386

Open

1 & 2

1 & 2

1 & 2

Open

80486

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

BIOS CONFIGURATION

Type

JP21

JP22

27128

Open

Open

27256

Open

Closed

27512

Closed

Closed