UNIDENTIFIED
8MHZ SYSTEM BOARD
Processor | 8088 |
Processor Speed | 4.77/8MHz |
Chip Set | Unidentified |
Video Chip Set | None |
Maximum Onboard Memory | 640KB |
Maximum Video Memory | None |
Cache | None |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 8087 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Reset switch | JP1 | Speaker | JP4 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | SW1/1 | Off |
NPU not installed | SW1/2 | On | |
NPU installed | SW1/2 | Off |
DRAM CONFIGURATION |
Note: The location of the banks are unidentified. The number and type of memory chips is unidentified. |
DRAM SWITCH CONFIGURATION | ||
Size | SW1/3 | SW1/4 |
128KB | Off | On |
192KB | On | Off |
256KB | Off | Off |
DRAM JUMPER CONFIGURATION | |
Size | JP3 |
4164 chips installed | Pins 2 & 3 closed |
41256 & 4164 chips installed | Pins 1 & 2 closed |
CPU SPEED SELECTION | |
Speed | JP2 |
4.77MHz | Closed |
8MHz | Open |
FLOPPY DRIVE SELECTION | ||
Drives installed | SW1/7 | SW1/8 |
1 | On | On |
2 | Off | On |
3 | On | Off |
4 | Off | Off |
MONITOR SELECTION | ||
Multiplier | SW1/5 | SW1/6 |
None | On | On |
Color (40 x 20) | Off | On |
Color (80 x 25) | On | Off |
Monochrome | Off | Off |