LEADING EDGE PRODUCTS, INC.
MODEL D (REVISION 1 & 5)
| Processor | 8088 (Exact location unknown.) | 
| Processor Speed | 4.77MHz | 
| Chip Set | Unknown | 
| Max. Onboard DRAM | 640KB | 
| Cache | None | 
| BIOS | Unknown | 
| Dimensions | 254mm x 218mm | 
| I/O Options | Color monitor port, floppy drive interface, light pen connector, monochrome monitor port, parallel port, serial port | 
| NPU Options | 8087 (Exact location unknown.) | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Parallel port | J6 | Floppy drive interface | J15 | 
| Serial port | J7 | Keyboard | J18 | 
| Color monitor port | J8 | Speaker | J19 | 
| Monochrome port | J9 | Reset switch | J20 | 
| Light pen connector | J11 | Power-on LED indicator | J21 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Factory configured - do not alter | J5 | N/A | 
| » | Monitor enabled | J10 | Closed | 
| Monitor disabled | J10 | Open | |
| » | Floppy drive interface enabled | J13 | pins 4 & 9 closed | 
| Floppy drive interface disabled | J13 | pins 4 & 9 open | |
| » | Serial port enabled | J13 | pins 5 & 10 closed | 
| Serial port disabled | J13 | pins 5 & 10 open | |
| » | Parallel port enabled | J13 | pins 3 & 8 closed | 
| Parallel port disabled | J13 | pins 3 & 8 open | |
| » | Real Time Clock enabled | J13 | pins 2 & 7 closed | 
| Real Time Clock disabled | J13 | pins 2 & 7 open | |
| » | Factory configured - do not alter | J13 | pins 1 & 6 open | 
| » | BIOS ROM type 8/16K | J16 | Open | 
| BIOS ROM type 32K | J16 | Closed | |
| » | Video mode TTL mononchrome | SW1 | Up | 
| 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 J5 is unknown. | |||
| DRAM CONFIGURATION | |||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | J17 | 
| 256KB | (9) 4164 | (9) 4164 | (9) 4164 | (9) 4164 | Closed | 
| 640KB | (9) 4164 | (9) 4164 | (9) 41256 | (9) 41256 | Open | 
| 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 | J12 | 
| 2 | pins 1 & 5 closed | 
| 4 | pins 2 & 6 closed | 
| 5 | pins 3 & 7 closed | 
| 7 | pins 4 & 8 closed |