UNITRON COMPUTER, INC.
486SX-25
Processor | 80486SX |
Processor Speed | 25MHz |
Chip Set | UMC |
Max. Onboard DRAM | 32MB |
Cache | None |
BIOS | Phoenix |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J3 | Turbo LED | J11 |
Reset switch | J9 | Speaker | J12 |
Turbo switch | J10 | Power LED & keylock | J13 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | J4 | pins 2 & 3 closed |
Monitor type select monochrome | J4 | pins 1 & 2 closed | |
» | Factory configured - do not alter | J8 | N/A |
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) 1M x 9 | (4) 256K x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
17MB | (4) 4M x 9 | (4) 256K x 9 |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CPU TYPE CONFIGURATION | |||
Type | J5 | J6 | J7 |
80486SX | pins 2 & 3 closed | pins 2 & 3 closed | Open |
80487SX | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |