LEADING EDGE PRODUCTS, INC.
MODEL M (MP1676L)
|
Processor |
8088 |
|
Processor Speed |
7.16MHz |
|
Chip Set |
None |
|
Max. Onboard DRAM |
256KB |
|
Cache |
None |
|
BIOS |
Leading Edge |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
Serial port, 32-bit external memory card slot, floppy drive interface |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port |
J8 |
No connection |
P6 |
|
DC power |
P1 & P2 |
32-bit external memory card |
P7 |
|
Keyboard connector |
P3 |
Floppy drive interface |
P8 |
|
Power LED |
P5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Factory configured - do not alter |
JP1 |
Open | |
|
Serial port select IRQ3 |
JP2 |
pins 1 & 2 closed | |
|
Serial port select IRQ4 |
JP2 |
pins 2 & 3 closed | |
|
Serial port select voltage interface |
JP3, JP4, JP5, & JP6 |
pins 1 & 2 closed | |
|
Serial port select current interface |
JP3, JP4, JP5, & JP6 |
pins 2 & 3 closed | |
|
Serial port select COM1 |
JP10 |
pins 1 & 2 closed | |
|
Serial port select COM2 |
JP10 |
pins 2 & 3 closed | |
|
Factory configured - do not alter |
SW1/1 |
Off | |
|
Factory configured - do not alter |
SW1/3 |
Off | |
|
Factory configured - do not alter |
SW1/4 |
Off | |
|
Factory configured - do not alter |
SW2/5 |
Off | |
|
Factory configured - do not alter |
SW2/6 |
Off | |
|
Factory configured - do not alter |
SW2/7 |
Off | |
|
Factory configured - do not alter |
SW2/8 |
Off | |
|
Self test select normal operation |
SW3/1 |
On | |
|
Self test select continuously repeating |
SW3/1 |
Off | |
|
Monitor type select medium resolution |
SW3/2 |
On | |
|
Monitor type select high resolution |
SW3/2 |
Off | |
|
Leading Edge PC advanced features enabled |
SW3/3 |
On | |
|
Leading Edge PC advanced features disabled |
SW3/3 |
Off | |
|
Serial interface mode XON/OFF disabled |
SW3/4 |
On | |
|
Serial interface mode XON/OFF enabled |
SW3/4 |
Off | |
|
Self test disabled |
SW3/5 |
On | |
|
Self test enabled |
SW3/5 |
Off | |
|
NPU speed select 8MHz |
SW3/6 |
On | |
|
NPU speed select 5MHz |
SW3/6 |
On | |
|
NPU disabled |
SW3/7 |
On | |
|
NPU enabled |
SW3/7 |
On | |
|
CPU speed select fast |
SW3/8 |
On | |
|
CPU speed select slow |
SW3/8 |
On | |
|
DRAM CONFIGURATION | |
|
Size |
Bank 0 |
|
256KB |
(9) HM50256P-15 |
|
Note:Memory is factory installed and is not configurable. | |
|
DRAM SWITCH CONFIGURATION | |||||
|
Size |
SW1/2 |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
|
128KB |
On |
On |
Off |
On |
On |
|
256KB |
On |
On |
Off |
Off |
On |
|
384KB |
On |
On |
Off |
On |
Off |
|
512KB |
On |
On |
Off |
Off |
Off |
|
640KB |
Off |
On |
Off |
On |
On |
|
Note:Memory configurations above 256KB must use the proprietary memory expansion card. | |||||
|
DRAM SWITCH CONFIGURATION | ||
|
Size |
SW2/5 |
SW2/6 |
|
None |
On |
On |
|
Monochrome |
Off |
Off |
|
40 x 25 CGA |
Off |
On |
|
80 x 25 CGA |
On |
Off |