EVERSOURCE COMPUTERS, INC.
USA 486DX
Processor | 80486DX |
Processor Speed | 33/50MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 256KB |
BIOS | AMI |
Dimensions | 330mm x 220mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J2 | Reset switch | J6 |
Turbo switch | J4 | External battery | J7 |
Turbo LED | J5 | Speaker | J100 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | J3 | Closed |
Monitor type select monochrome | J3 | Open |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
1MB | NONE | (4) 256K x 9 |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
4MB | NONE | (4) 1M x 9 |
5MB | (4) 256K x 9 | (4) 1 M x 9 |
5MB | (4) 1 M x 9 | (4) 256K x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
16MB | NONE | (4) 4M x 9 |
17MB | (4) 4M x 9 | (4) 256K x 9 |
17MB | (4) 256K x 9 | (4) 4M x 9 |
20MB | (4) 4M x 9 | (4) 1M x 9 |
20MB | (4) 1M x 9 | (4) 4M 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 1 |
128KB | (4) 32K x 8 | NONE | (1) 8K x 1 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 8K x 1 |
Note:The exact location of TAG is unidentified. |
CACHE JUMPER CONFIGURATION | |||
Size | JMP1 | JMP2 | JMP3 |
64KB | pins 1 & 2 closed | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
128KB | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
256KB | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |