J-MARK COMPUTER CORPORATION
386DX 25/40 NON CACHE
Processor | 80386DX |
Processor Speed | 25/40MHz |
Chip Set | CGS |
Max. Onboard DRAM | 32MB |
Cache | None |
BIOS | AMI |
Dimensions | 220mm x 220mm |
I/O Options | None |
NPU Options | 80387DX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP2 | Reset switch | JP9 |
Speaker | JP7 | Turbo switch | JP10 |
Power LED & keylock | JP8 | Turbo LED | JP11 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JP3 | pins 1 & 2 closed |
CMOS memory clear | JP3 | pins 2 & 3 closed | |
» | NPU synchronous with CPU | JP5 | Open |
NPU asynchronous with CPU | JP5 | Closed | |
» | Monitor type select color | JP6 | Closed |
Monitor type select monochrome | JP6 | Open | |
» | Turbo switch enabled | JP10 | Closed |
Turbo switch disabled | JP10 | Open |
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 |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
17MB | (4) 256K x 9 | (4) 4M x 9 |
17MB | (4) 4M x 9 | (4) 256K 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 |