IBM CORPORATION
PS/2 MODEL 76 (TYPE 9576)
Processor | 80486SX/80486DX2 |
Processor Speed | 25/33/66(internal)MHz |
Chip Set | IBM |
Max. Onboard DRAM | 32MB |
Cache | None |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | MCA slot, floppy drive interface, SCSI connector, parallel port, PS/2 mouse port, serial ports (2) |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
PS/2 mouse port | J1 | SCSI interface | J7 |
Parallel port | J3 | Control panel connector | J19 |
Serial port 1 | J4 | Floppy drive interface | J21 |
Serial port 2 | J5 | MCA slot | SL1 |
SCSI port | J6 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JMP1 | Open |
CMOS memory clear | JMP1 | Closed | |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
4MB | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 |
4MB | (1) 1M x 36 | NONE | NONE | NONE |
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) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 4M x 36 | NONE | NONE | NONE |
17MB | (1) 4M x 36 | (1) 256K x 36 | NONE | NONE |
18MB | (1) 4M x 36 | (1) 256K x 36 | (1) 256K x 36 | 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 |
21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x 36 | NONE |
22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x 36 | (1) 256K x 36 |
24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | NONE |
25MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 |
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 |
CPU SPEED CONFIGURATION | |
Speed | SPD |
25MHz | pins 1 & 2 closed |
33MHz | pins 2 & 3 closed |
Note: Jumper SPD is only on SX based boards. | |