LEADING EDGE PRODUCTS, INC.
MODEL D2
| Processor | 80286 | 
| Processor Speed | 8/10MHz | 
| Chip Set | Zymos | 
| Max. onboard DRAM | 1MB | 
| Cache | None | 
| BIOS | Leading Edge | 
| Dimensions | 330mm x 330mm | 
| I/O Options | Floppy drive interface, parallel port, serial port | 
| NPU Options | 80287 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Parallel port | CN1 | Speaker | CN4 | 
| Serial port (25 pin) | CN2 | Power LED & keylock | CN5 | 
| Floppy drive interface | CN3 | Keyboard connector | CN6 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Floppy drive interface enabled | J7 | Closed | 
| Floppy drive interface disabled | J7 | Open | |
| » | Floppy drive interface address select primary | J8 | pins 2 & 3 closed | 
| Floppy drive interface address select secondary | J8 | pins 1 & 2 closed | |
| » | BIOS select 1 wait state | J25 | pins 2 & 3 closed | 
| BIOS select 0 wait states | J25 | pins 1 & 2 closed | |
| » | CPU speed select 10MHz | J26 | pins 2 & 3 closed | 
| CPU speed select 8MHz | J26 | pins 1 & 2 closed | |
| » | Monitor type select monochrome | J27 | pins 2 & 3 closed | 
| Monitor type select color | J27 | pins 1 & 2 closed | |
| » | Factory configured - do not alter | J28 | pins 2 & 3 closed | 
| DRAM CONFIGURATION | |||||
| Size | Bank 0 | Bank 1 | Bank 2 | J23 | J24 | 
| 640KB | (16) 41256 | (16) 4164 | NONE | pins 2 & 3 | pins 2 & 3 | 
| 1024KB | (16) 41256 | (16) 41256 | NONE | pins 2 & 3 | pins 1 & 2 | 
| 1152KB | (16) 41256 | (16) 4164 | (16) 41256 | pins 1 & 2 | pins 2 & 3 | 
| Note:Pins designated should be in the closed position. | |||||
| SERIAL PORT CONFIGURATION | |||||
| COM1 | COM2 | IRQ | J5 | J6 | |
| » | COM1 | Disabled | 4 | pins 1 & 2 closed | pins 1 & 2 closed | 
| COM1 | Disabled | 3 | pins 1 & 2 closed | pins 2 & 3 closed | |
| Disabled | COM2 | 3 | pins 2 & 3 closed | pins 2 & 3 closed | |
| Disabled | COM2 | 4 | pins 2 & 3 closed | pins 1 & 2 closed | |
| Disabled | Disabled | N/A | pins 1, 2 & 3 closed | N/A | |
| PARALLEL PORT CONFIGURATION | |||||
| LPT1 | LPT2 | IRQ | J3 | J4 | |
| » | LPT1 | Disabled | 7 | pins 1 & 2 closed | pins 1 & 2 closed | 
| LPT1 | Disabled | 5 | pins 2 & 3 closed | pins 1 & 2 closed | |
| Disabled | LPT2 | 5 | pins 2 & 3 closed | pins 2 & 3 closed | |
| Disabled | LPT2 | 7 | pins 1 & 2 closed | pins 2 & 3 closed | |
| Disabled | Disabled | N/A | N/A | pins 1, 2, & 3 closed | |