351 386DX/486DLC Motherboard Settings and Configuration
UNIDENTIFIED
351 386DX/486DLC
Processor | 80386DX/CX486DLC |
Processor Speed | 25/33/40MHz |
Chip Set | UMC |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | MR BIOS |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387DX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP1 | Turbo LED | JP12 |
Reset switch | JP9 | Speaker | JP14 |
Turbo switch | JP10 | Keylock & power LED | JP15 |
USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position |
| Monitor type select color | JP13 | Closed |
| Monitor type select monochrome | JP13 | Open |
» | Coprocessor not installed | JP18 & JP19 | Open |
| Coprocessor installed | JP18 & JP19 | Closed |
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 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | JP4 | JP5 | JP6 | JP7 | JP8 |
64KB | pins 1 & 2 | pins 2 & 3 | Open | Open | Open |
128KB | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | Open | Closed |
256KB | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | Closed | Closed |
Note: Pins designated should be in the closed position. | |||||
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 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
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