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  | |