UNIDENTIFIED
386CM
Processor | 80386DX |
Processor Speed | 25MHz |
Chip Set | Intel |
Max. Onboard DRAM | 16MB |
Cache | 32KB |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387DX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | BC1 | Reset switch | J19 |
Power LED & keylock | J17 | Speaker | J20 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | NPU synchronous with CPU | JP1 | pins 1 & 2 closed |
NPU asynchronous with CPU | JP1 | pins 2 & 3 closed | |
» | BIOS type select 27512 | JP4 | pins 1 & 2 closed |
BIOS type select 27256 | JP4 | pins 2 & 3 closed | |
» | Non-cacheable region select 0E0000-0FFFFF (27512) | JP5 | pins 1 & 2 closed |
Non-cacheable region select 0F0000-0FFFFF (27256) | JP5 | pins 2 & 3 closed | |
» | NPU disabled | JP6 | pins 1 & 2 closed |
NPU enabled | JP6 | pins 2 & 3 closed | |
» | NPU disabled | JP8 | pins 1 & 2 closed |
NPU enabled | JP8 | pins 2 & 3 closed | |
» | 32-bit memory access wait state select 4 wait states | JP10 | pins 1 & 2 closed |
32-bit memory access wait state select 3 wait states | JP10 | pins 2 & 3 closed | |
» | Turbo speed enabled | J21 | Open |
Turbo speed disabled | J21 | Closed | |
» | 32-bit memory RAS# & CAS# T state select 1 T state | JP25 | pins 1 & 2 closed |
32-bit memory RAS# & CAS# T state select 0.5 T state | JP25 | pins 2 & 3 closed | |
» | Monitor type select color | SW2 | pins 1 & 2 closed |
Monitor type select monochrome | SW2 | pins 2 & 3 closed |
DRAM CONFIGURATION | |||||
Size | Extended | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | 0KB | (4) 256K x 9 | NONE | NONE | NONE |
1MB | 384KB | (4) 256K x 9 | NONE | NONE | NONE |
2MB | 1408KB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE |
3MB | 2432KB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE |
4MB | 3456KB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
4MB | 3456KB | (4) 1M x 9 | NONE | NONE | NONE |
5MB | 4480KB | (4) 1M x 9 | (4) 256K x 9 | NONE | NONE |
6MB | 5504KB | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE |
7MB | 6528KB | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
8MB | 7552KB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
9MB | 8576KB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 | NONE |
10MB | 9600KB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 |
12MB | 10624KB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
12MB | 11648KB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
13MB | 12672KB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 |
16MB | 13696KB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | 14720KB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
DRAM JUMPER CONFIGURATION | ||||
Size | SW4/1 | SW4/2 | SW4/3 | SW4/4 |
1MB | On | On | On | On |
1MB | Off | On | On | On |
2MB | On | Off | On | On |
3MB | Off | Off | On | On |
4MB | On | On | Off | On |
4MB | On | On | Off | On |
5MB | Off | On | Off | On |
6MB | On | Off | Off | On |
7MB | Off | Off | Off | On |
8MB | On | On | On | Off |
9MB | Off | On | On | Off |
10MB | On | Off | On | Off |
12MB | Off | Off | On | Off |
12MB | On | On | Off | Off |
13MB | Off | On | Off | Off |
16MB | On | Off | Off | Off |
16MB | Off | Off | Off | Off |
Note:The location of SW4 is unidentified. |
CACHE CONFIGURATION | |
Size | Bank 0 |
0KB | NONE |
32KB | (4) 8K x 8 |
Note: The location of the cache bank is unidentified |
CACHE JUMPER CONFIGURATION | |||
Size | JP2 | JP3 | JP22 |
0KB | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
32KB | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
DMA MODE CONFIGURATION | ||
Mode | JP7 | JP9 |
Normal (processor holds on all DMA & refresh cycles) | pins 1 & 2 closed | pins 1 & 2 closed |
Bypass (processor holds on cache DMA invalidation cycles only) | pins 2 & 3 closed | pins 2 & 3 closed |