LEADING EDGE PRODUCTS, INC.
MODEL D (REVISION CC1/CC2)
| Processor | 8088 (exact location unknown) | 
| Processor Speed | 4.77/7.16MHz | 
| Chip Set | Unknown | 
| Max. Onboard DRAM | 640KB | 
| Cache | None | 
| BIOS | Unknown | 
| Dimensions | 254mm x 218mm | 
| I/O Options | Floppy drive interface, parallel port, serial port, VGA port | 
| NPU Options | 8087 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Parallel port | J5 | Keyboard | J16 | 
| Serial port | J6 | Speaker | J17 | 
| VGA port | J7 | Reset switch | J18 | 
| Light pen port | J10 | Power-on LED indicator | J19 | 
| Floppy drive interface | J13 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| » | Factory configured - do not alter | J8 | N/A | 
| » | Monitor enabled | J9 | Closed | 
| Monitor disabled | J9 | Open | |
| » | Factory configured - do not alter | J15 | open | 
| » | Real time clock enabled | J15 | pins 1 & 6 closed | 
| Real time clock disabled | J15 | pins 2 & 7 closed | |
| » | Parallel port enabled | J15 | pins 2 & 7 open | 
| Parallel port disabled | J15 | pins 3 & 8 closed | |
| » | Floppy drive interface enabled | J15 | pins 3 & 8 open | 
| Floppy drive interface disabled | J15 | pins 4 & 9 closed | |
| » | Serial port enabled | J15 | pins 4 & 9 open | 
| Serial port disabled | J15 | pins 5 & 10 closed | |
| » | Video mode TTL monochrome | SW1 | pins 5 & 10 open | 
| Video mode CGA | SW1 | Down | |
| » | Factory configured - do not alter | SW2/switch 1 | Off | 
| » | NPU disabled | SW2/switch 2 | On | 
| NPU enabled | SW2/switch 2 | Off | |
| » | Factory configured - do not alter | SW2/switch 3 | On | 
| » | Memory test 64KB | SW2/switch 4 | On | 
| Memory test all | SW2/switch 4 | Off | |
| » | Factory configured - do not alter | SW2/switch 5 | Off | 
| » | Factory configured - do not alter | SW2/switch 6 | Off | 
| Note:The exact location of J8 is unknown. | |||
| DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | J14 | 
| 512KB | (9) 4164 | (9) 4164 | NONE | pins 2 & 3 closed | 
| 640KB | (9) 41256 | (9) 41256 | (9) 41128 | pins 1 & 2 closed | 
| CPU SPEED CONFIGURARION | |
| Speed | SW3 | 
| 4.77MHz | Down | 
| 7.16MHz | Up | 
| FLOPPY DISK DRIVES INSTALLED | ||
| Number of Drives | SW2/switch 7 | SW2/switch 8 | 
| 1 | On | On | 
| 2 | Off | On | 
| 3 | On | Off | 
| 4 | Off | Off | 
| REAL TIME CLOCK INTERRUPT SELECT | |
| IRQ | J11 | 
| 2 | pins 1 & 5 closed | 
| 4 | pins 2 & 6 closed | 
| 5 | pins 3 & 7 closed | 
| 7 | pins 4 & 8 closed |