PS/1 TYPE 2133, 2155, 2168 (TYPE B1) Motherboard Settings and Configuration

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

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PS/1 TYPE 2133, 2155, 2168 (TYPE B1) Motherboard Settings and Configuration

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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.

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