PC'S LIMITED, INC.
TURBO PC
| Processor | 8088-2 | 
| Processor Speed | 7.33MHz | 
| Chip Set | None | 
| Max. Onboard DRAM | 640KB | 
| Cache | None | 
| BIOS | PC's Ltd. | 
| Dimensions | 355mm x 304mm | 
| I/O Options | None | 
| NPU Options | 8087 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Speaker | J2 | Reset switch | JP1 | 
| Turbo LED & Power LED | J3 | Alternate DC power plug | P3 | 
| Note:P3 may not be present on all boards. | |||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| Factory configured - do not alter | J5 | Open | |
| » | CPU speed select fast | J6 | pins 1 & 2 closed | 
| CPU speed select slow | J6 | pins 2 & 3 closed | |
| » | Self-test disabled | SW2/1 | On | 
| Self-test enabled | SW2/1 | Off | |
| » | NPU disabled | SW2/2 | On | 
| NPU enabled | SW2/2 | Off | |
| » | Factory configured - do not alter | SW2/4 | Off | 
| Color adjust | VC1 | Variable | |
| DRAM CONFIGURATION | |||
| Size | Bank 0 | Bank 1 | Bank 2 | 
| 256KB | (9) 41256 | NONE | NONE | 
| 640KB | (9) 41256 | (9) 41256 | (18) 4164 | 
| DRAM JUMPER CONFIGURATION | |
| Size | J4 | 
| 256KB | pins 2 & 3 closed | 
| 640KB | pins 1 & 2 closed | 
| DRAM SWITCH CONFIGURATION | |||||||||
| Size | SW2/3 | SW3/1 | SW3/2 | SW3/3 | SW3/4 | SW3/5 | SW3/6 | SW3/7 | SW3/8 | 
| 256KB | On | On | Off | On | Off | On | Off | On | Off | 
| 640KB | Off | Off | On | Off | On | Off | On | Off | On | 
| DRAM SWITCH CONFIGURATION (CON’T) | ||||||||
| Size | SW4/1 | SW4/2 | SW4/3 | SW4/4 | SW4/5 | SW4/6 | SW4/7 | SW4/8 | 
| 256KB | On | Off | On | Off | On | Off | On | Off | 
| 640KB | Off | On | Off | On | Off | On | Off | On | 
| FLOPPY DRIVE CONFIGURATION | ||
| Drives installed | SW2/7 | SW2/8 | 
| 1 | On | On | 
| 2 | Off | On | 
| 3 | On | Off | 
| 4 | Off | Off | 
| MONITOR CONFIGURATION | ||
| Type | SW2/5 | SW2/6 | 
| Monochrome | Off | Off | 
| 40 x 25 color | Off | On | 
| 80 x 25 color | On | Off |