IBM CORPORATION
PS/1 MT2133A, MT2155A, MT2168A
|
Processor |
80486SX/80487SX/80486DX/80486DX2/P23T/P24T |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
Unidentified |
|
Maximum Onboard Memory |
32MB |
|
Maximum Video Memory |
1MB |
|
Cache |
64/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
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 |
VGA feature connector |
J14 |
|
Serial port 1 |
J3 |
Power LED |
J26 pins 1 & 2 |
|
Serial port 2 |
J4 |
IDE interface LED |
J26 pins 3 & 4 |
|
Parallel port |
J5 |
Speaker |
J27 |
|
VGA port |
J6 |
Power supply |
J29 |
|
Floppy drive interface |
J7 |
Power supply |
J30 |
|
IDE interface |
J9 |
Riser slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Password normal operation |
J31 |
Pins 2 & 3 closed | |
|
Password clear |
J31 |
Pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
2MB |
(1) 512K x 36 |
None |
None |
None |
|
4MB |
(1) 1M x 36 |
None |
None |
None |
|
4MB |
(1) 512K x 36 |
(1) 512K x 36 |
None |
None |
|
6MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
None |
|
8MB |
(1) 2M x 36 |
None |
None |
None |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
None |
None |
|
8MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 512K x 36 |
|
16MB |
(1) 4M x 36 |
None |
None |
None |
|
16MB |
(1) 2M x 36 |
(1) 2M x 36 |
None |
None |
|
24MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
None |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
None |
None |
|
32MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
|
Note: Banks are interchangeable. | ||||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 8K x 8 |
(1) 32K x 8 |
|
256KB |
(8) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
J16 |
J17 |
J18 |
J32 |
|
64KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
256KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
VIDEO MEMORY CONFIGURATION | |
|
Size |
CN1 |
|
512KB |
512KB module installed |
|
1MB |
1MB module installed |
|
CPU TYPE SELECTION | |
|
Type |
J23 |
|
80486SX |
Pins 2 & 3 closed |
|
80487SX |
Pins 2 & 3 closed |
|
80486DX |
Pins 1 & 2 closed |
|
80486DX2 |
Pins 1 & 2 closed |
|
P23T |
Pins 2 & 3 closed |
|
P24T |
Pins 1 & 2 closed |