UNIDENTIFIED
386DX CACHE
Processor | 80386DX/CX486DLC |
Processor Speed | 25/33/40MHz |
Chip Set | OPTI |
Max. onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 240mm x 220mm |
I/O Options | None |
NPU Options | 80387DX/CX487DLC |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Turbo LED | JP12 |
Power LED & keylock | J18 | Turbo switch | JP11 |
Speaker | J19 | Reset switch | SW1 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | ISA bus clock iOSC/4 (10MHz) | JP2 | Closed |
ISA bus clock iOSC/5 (8MHz) | JP2 | Open | |
» | CMOS memory normal operation | JP3 | pins 2 & 3 closed |
CMOS memory clear | JP3 | pins 1 & 2 closed | |
» | Monitor type select color | JP4 | Closed |
Monitor type select monochrome | JP4 | Open | |
» | ATCLK iOSC/2 | JP7 | pins 1 & 2 closed |
ATCLK iOSC/1 | JP7 | pins 2 & 3 closed |
CACHE CONFIGURATION | |||
Size | Cache | Location | TAG |
64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 |
128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JP6 | JP8 | JP9 | JP10 | JP17 | JP18 |
64KB | Open | Open | Open | pins 2 & 3 | Open | Open |
128KB | Closed | Closed | Open | pins 1 & 2 | Open | Closed |
256KB | Closed | Closed | Closed | 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 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CPU TYPE CONFIGURATION | |||
CPU | JP1 | JP5 | JP13 |
80386DX | Open | Open | Open |
CX486DLC | Open | Closed | Closed |