UNIDENTIFIED
TURBO MAINBOARD MB-101
| Processor | 8088 | 
| Processor Speed | 10MHz | 
| Chip Set | None | 
| Max. Onboard DRAM | 640KB | 
| Cache | None | 
| BIOS | Unidentified | 
| Dimensions | 220mm x 220mm | 
| I/O Options | None | 
| NPU Options | 8087 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Power LED & keylock | CN1 | Turbo switch | JP3 | 
| Speaker | CN3 | Reset switch | JP4 | 
| Turbo LED | JP1 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| » | Parity check enabled | JP2 | Open | 
| Parity check disabled | JP2 | Closed | |
| » | Factory configured - do not alter | SW1/1 | Off | 
| » | NPU disabled | SW1/2 | Off | 
| NPU enabled | SW1/2 | Off | |
| DRAM CONFIGURATION | ||||||
| Bank | 256KB | 256KB | 512KB | 512KB | 640KB | 640KB | 
| Bank 0 | (8) 41256 | NONE | (8) 41256 | NONE | (8) 41256 | NONE | 
| Bank 1 | NONE | NONE | (8) 41256 | NONE | (8) 41256 | NONE | 
| Bank 2 | NONE | NONE | NONE | NONE | (8) 4164 | NONE | 
| Bank 3 | NONE | NONE | NONE | NONE | (8) 4164 | NONE | 
| Bank 4 | NONE | (2) 44256 | NONE | (2) 44256 | NONE | (2) 44256 | 
| Bank 5 | NONE | NONE | NONE | (2) 44256 | NONE | (2) 44256 | 
| Bank 6 | NONE | NONE | NONE | NONE | NONE | (2) 4464 | 
| Bank 7 | NONE | NONE | NONE | NONE | NONE | (2) 4464 | 
| U9 | (1) 41256 | (1) 41256 | (1) 41256 | (1) 41256 | (1) 41256 | (1) 41256 | 
| U18 | NONE | NONE | (1) 41256 | (1) 41256 | (1) 41256 | (1) 41256 | 
| U27 | NONE | NONE | NONE | NONE | (1) 4164 | (1) 4164 | 
| U36 | NONE | NONE | NONE | NONE | (1) 4164 | (1) 4164 | 
| Note:If parity checking is disabled, then DRAM is not needed in U9, U18, U27, and U36. | ||||||
| DRAM SWITCH CONFIGURATION | ||
| Size | SW1/3 | SW1/4 | 
| 256KB | Open | Open | 
| 512KB | Closed | Open | 
| 640KB | Closed | Closed | 
| FLOPPY DRIVE CONFIGURATION | ||
| Drives installed | SW1/7 | SW1/8 | 
| 1 | (8) 41256 | NONE | 
| 2 | (8) 41256 | NONE | 
| 3 | (8) 4164 | NONE | 
| 4 | (8) 4164 | NONE | 
| MONITOR CONFIGURATION | ||
| Type | SW1/5 | SW1/6 | 
| MGA | Off | Off | 
| CGA | On | Off | 
| EGA | On | On |