J-MARK COMPUTER CORPORATION
386-25
Processor | AM386/80386 (exact location unidentified) |
Processor Speed | 25MHz |
Chip Set | OPTI |
Video Chip Set | None |
Maximum Onboard Memory | 16MB ( 8MB on external card) |
Maximum Video Memory | None |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | External memory card |
NPU Options | 80387/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo LED | CR4 | External memory card | SL1 |
External battery | J10 | Reset switch | SW1 |
Speaker | J22 | Turbo switch | SW2 |
Power LED & keylock | J23 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Monitor type select color | JP1 | Pins 1 & 2 closed | |
Monitor type select monochrome | JP1 | Pins 2 & 3 closed |
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 |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | None | None | None |
2MB | (4) 256K x 9 | (4) 256K x 9 | None | None |
3MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | None |
4MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | None | None | None |
5MB | (4) 256K x 9 | (4) 1M x 9 | None | None |
6MB | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 | None |
6MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | None |
6MB | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 | None |
7MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 |
7MB | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 |
7MB | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
DRAM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
8MB | (4) 1M x 9 | (4) 1M x 9 | None | None |
9MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | None |
9MB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 | None |
9MB | (4) 1M x 9 | (4) 256K x 9 | (4) 1M x 9 | None |
10MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 |
10MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 |
10MB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 |
10MB | (4) 1M x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 |
12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | None |
13MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
13MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 |
13MB | (4) 1M x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
Note: If this board has 16MB installed, the on board memory is disabled. |