UNIDENTIFIED
TURBO XT
| Processor | 8088 | 
| Processor Speed | 8/10MHz | 
| Chip Set | None | 
| Max. Onboard DRAM | 640MB | 
| Cache | None | 
| BIOS | ERSO/DTK | 
| Dimensions | 330mm x 218mm | 
| I/O Options | None | 
| NPU Options | 8087 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Speaker | P4 | Turbo switch | JP7 | 
| Turbo switch | JP5 | Keylock | JP8 | 
| Turbo switch | JP6 | Power LED & Turbo LED | JP9 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| » | Factory configured - do not alter | JP1 | N/A | 
| » | Factory configured - do not alter | SW1/switch 1 | Off | 
| » | NPU enabled | SW1/switch 2 | Off | 
| NPU disabled | SW1/switch 2 | On | |
| DRAM CONFIGURATION | ||||||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | JP3 | JP3A | JP4 | JP4A | 
| 256KB | (8) 4164 | (8) 4164 | (8) 4164 | (8) 4164 | Open | Closed | Open | Closed | 
| 256KB | (8) 41256 | NONE | NONE | NONE | Closed | Open | Closed | Open | 
| 512KB | (8) 41256 | (8) 41256 | NONE | NONE | Closed | Open | Closed | Open | 
| 640KB | (8) 41256 | (8) 41256 | (8) 4164 | (8) 4164 | Closed | Open | Closed | Open | 
| DRAM JUMPER CONFIGURATION | ||
| Size | SW1/switch 3 | SW1/switch 4 | 
| 128KB | Off | On | 
| 192KB | On | Off | 
| 256KB | Off | Off | 
| MONITOR TYPE SELECTION | ||
| Type | SW1/switch 5 | SW1/switch 6 | 
| None | On | On | 
| Monochrome | Off | Off | 
| Color 40 x 25 | Off | On | 
| Color 80 x 25 | On | Off | 
| FLOPPY DRIVE CONFIGURATION | ||
| Number of drives | SW1/switch 7 | SW1/switch 8 | 
| 1 | On | On | 
| 2 | Off | On | 
| 3 | On | Off | 
| 4 | Off | Off |