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PS/1 TYPE 2133, 2155, 2168 (TYPE B1)

IBM CORPORATION

PS/1 TYPE 2133, 2155, 2168 (TYPE B1)

Device Type

Mainboard

Processor

80486SX/80487SX/80486DX/80486DX2/ODP486

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

64MB

Maximum Video Memory

Unidentified

Cache

128/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J2

IDE interface LED

J26

Serial port 1

J3

Speaker

J27

Serial port 2

J4

Power supply connector

J29

Parallel port

J5

Power supply connector

J30

VGA port

J6

Chassis fan power

J38

Floppy drive interface

J7

Riser slot

SL1

IDE interface

J9

32-bit VESA local bus slot

SL2

VGA feature connector

J14

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

On board video disabled

J15

Pins 1 & 2 closed

 

On board video enabled

J15

Pins 2 & 3 closed

Factory configured - do not alter

J37

Unidentified

Factory configured - do not alter

J50

Unidentified

SIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

None

4MB

(1) 1M x 36

None

None

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(1) 1M x 36

(1) 256K x 36

None

None

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

None

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

16MB

(1) 4M x 36

None

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

17MB

(1) 4M x 36

(1) 256K x 36

None

None

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

None

None

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

None

24MB

(1) 4M x 36

(1) 2M x 36

None

None

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

None

None

33MB

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J12

J13

J16

J17

J51

128KB

2 & 3

1 & 2

2 & 3

1 & 2

1 & 2

256KB

1 & 2

2 & 3

1 & 2

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

VIDEO MEMORY CONFIGURATION

Note: The size of the video memory is unidentified.

CPU TYPE SELECTION

Type

J24

J25

J31

80486SX

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

80487SX

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

80486DX

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

80486DX2

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

ODP486

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed