UNITRON COMPUTER, INC.
80486DX-33/50
Processor | 80486DX |
Processor Speed | 33/50MHz |
Chip Set | UMC |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | Phoenix |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J3 | Power LED & keylock | J6 |
Turbo switch | J4 | Reset switch | W14 |
Speaker | J5 | Turbo LED | W15 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | pins 2 & 3 closed |
Monitor type select monochrome | JP1 | pins 1 & 2 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) 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 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | W1 | W2 | W3 | W4 | W5 |
64KB | Open | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
128KB | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
256KB | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
Note: Pins designated should be in the closed position. |
CACHE JUMPER CONFIGURATION (CON’T) | ||||
Size | W6 | W7 | W8 | W9 |
64KB | Open | Open | Open | Open |
128KB | pins 1 & 2 closed | Open | pins 2 & 3 closed | Open |
256KB | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed | pins 2 & 3 closed |
CPU TYPE CONFIGURATION | ||||
Type | W10 | W11 | W12 | W13 |
80486SX | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
80487SX | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |