LEADING EDGE PRODUCTS, INC.
MODEL D4 PLUS
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB (on CPU card) |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
External CPU card, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN1 |
Floppy drive interface |
CN6 |
|
Serial port 1 |
CN3 |
IDE interface |
CN7 |
|
Serial port 2 |
CN4 |
CPU card slot |
SL1 |
|
Parallel port |
CN5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select color |
JP1 |
Closed |
|
Monitor type select monochrome |
JP1 |
Open | |
|
|
Parallel port enabled (printer) |
JP2 |
Open |
|
Parallel port disabled |
JP2 |
Closed | |
|
|
CMOS memory normal operation |
JP3 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP3 |
pins 2 & 3 closed | |
|
|
Standard local bus card installed |
JP5 |
pins 1 & 2 closed |
|
Standard local bus card not installed |
JP5 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U12) |
TAG (U13) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
|
CACHE JUMPER/SWITCH CONFIGURATION | |||||
|
Size |
JP1 |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
64KB |
pins 2 & 3 closed |
Off |
Off |
Off |
Off |
|
128KB |
pins 1 & 2 closed |
On |
Off |
Off |
On |
|
256KB |
pins 2 & 3 closed |
On |
On |
Off |
On |
|
CPU TYPE CONFIGURATION | |
|
Type |
JP3 |
|
80486SX |
pins 5 & 6 closed |
|
80487SX |
pins 2 & 3, 4 & 5, 6 & 7 closed |
|
80486DX |
pins 1 & 2, 4 & 5, 6 & 7 closed |
|
80486DX2 |
pins 1 & 2, 4 & 5, 6 & 7 closed |