UNIDENTIFIED
486L
Processor | 80486SX/80487SX/80486DX |
Processor Speed | 20/25/33/50MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 330mm x 220mm |
I/O Options | Local bus slot |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Reset switch | J16 |
Power LED & keylock | J13 | Turbo LED | J17 |
Speaker | J14 | Local bus slot | SL1 |
Turbo switch | J15 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Battery type select internal | J1 | pins 1 & 2 closed |
Battery type select external | J1 | Closed | |
» | Monitor type select color | J2 | Closed |
Monitor type select monochrome | J2 | Open | |
» | ATCLK select CLKI/6 | J3 | Closed |
ATCLK select CLKI/4 | J3 | Open | |
Phase frequency select single phase | J6 | pins 1 & 2 closed | |
Phase frequency select double phase | J6 | pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CACHE CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | TAG 0 | TAG 1 |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | (1) 16K x 4 |
128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | (1) 16K x 4 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | (1) 16K x 4 |
CACHE JUMPER CONFIGURATION | ||||
Size | J4 | J5 | J10 | J12 |
64KB | Open | Open | pins 2 & 3 closed | Open |
128KB | Open | Closed | pins 1 & 2 closed | Closed |
256KB | Closed | Closed | pins 2 & 3 closed | Closed |
CPU TYPE CONFIGURATION | |||
Type | J7 | J8 | JP10 |
80486SX | pins 2 & 3 closed | Open | Open |
80487SX | pins 1 & 2 closed | Closed | Open |
80486DX | pins 1 & 2 closed | Closed | pins 2 & 3 closed |
CHIPSET CONFIGURATION | |||
Type | J9 | J11 | |
» | 82C495 | pins 1 & 2 closed | pins 1 & 2 closed |
» | 82C493 | pins 2 & 3 closed | pins 2 & 3 closed |