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 |