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OPEN SYSTEMS CWP

UNISYS CORPORATION

OPEN SYSTEMS CWP

Device Type

Mainboard

Processor

80486SX2/80486DX/80486DX2/80486DX4

Processor Speed

33/50(internal)/66(internal)/100(internal)MHz

Chip Set

Unidentified

Video Chip Set

Cirrus Logic

Maximum Onboard Memory

64MB

Maximum Video Memory

2MB

Cache

256KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Ethernet connector, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot, cache slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

LED, speaker

C1

VGA feature connector

CN7

3.3v power

C2

IDE interface 1

CN8

VGA port

CN1

Floppy drive interface

CN9

Ethernet connector

CN2

Smart port connector

CN10

PS/2 mouse port

CN3

BNC connector

CN11

Parallel port

CN4

Riser slot

SL1

Serial port 1

CN5

Cache slot

SL2

Serial port 2

CN6

   

SIMM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 36

None

2MB

(1) 512K x 36

None

2MB

(1) 256K x 36

(1) 256K x 36

4MB

(1) 1M x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

5MB

(1) 1M x 36

(1) 256K x 36

6MB

(1) 1M x 36

(1) 512K x 36

8MB

(1) 2M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

9MB

(1) 2M x 36

(1) 256K x 36

10MB

(1) 2M x 36

(1) 512K x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

17MB

(1) 4M x 36

(1) 256K x 36

18MB

(1) 4M x 36

(1) 512K x 36

20MB

(1) 4M x 36

(1) 1M x 36

24MB

(1) 4M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

33MB

(1) 8M x 36

(1) 256K x 36

34MB

(1) 8M x 36

(1) 512K x 36

36MB

(1) 8M x 36

(1) 1M x 36

40MB

(1) 8M x 36

(1) 2M x 36

48MB

(1) 8M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

SL2

256KB

256KB module installed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

1MB

None

2MB

1MB

(2) 256K x 16

CPU TYPE SELECTION

Type

J22

J23

J25

J26

80486SX2-33

1 & 2

1 & 3

1 & 3, 2 & 4

1 & 3, 2 & 4

80486DX2-50

1 & 2

2 & 4

1 & 3, 2 & 4

1 & 3, 2 & 4

80486DX2-66

1 & 2

1 & 3

1 & 3, 2 & 4

1 & 3, 2 & 4

80486DX4-100

1 & 2

1 & 3

3 & 5, 4 & 6

3 & 5, 4 & 6

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CONíT)

Type

J27

J29

J31

J32

80486SX2-33

1 & 2

Open

1 & 2

Open

80486DX2-50

1 & 2

Open

1 & 2

Open

80486DX2-66

1 & 2

Open

1 & 2

Open

80486DX4-100

2 & 3

Open

1 & 2

Open

Note: Pins designated should be in the closed position.