LEADING EDGE PRODUCTS, INC.
WINTOWER 486PC
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
Phoenix |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
32-bit VESA local bus slots (2), IDE interface, PS/2 mouse port |
|
NPU Options |
None |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
IDE interface |
CN1 |
32-bit VESA Local bus slot |
S1 |
|
PS/2 mouse style |
CN2 |
32-bit VESA Local bus slot |
S2 |
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper |
Position |
|
|
» |
Factory configured - do not alter |
JP1 |
N/A |
|
» |
Factory configured - do not alter |
JP6 |
N/A |
|
» |
Parallel port interrupt select IRQ7 |
JP3 |
pins 1 & 2 closed |
|
|
Parallel port interrupt select IRQ5 |
JP3 |
pins 2 & 3 closed |
|
» |
CMOS memory normal operation |
JP4 |
pins 1 & 2 closed |
|
|
CMOS memory clear |
JP4 |
pins 2 & 3 closed |
|
DRAM CONFIGURATION |
||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(1) 1M x 36 |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(1) 2M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 2M x 36 |
NONE |
|
16MB |
(1) 2M x 36 |
(1) 2M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
|
20MB |
(1) 4M x 36 |
NONE |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
|
32MB |
(1) 8M x 36 |
NONE |
|
36MB |
(1) 1M x 36 |
(1) 8M x 36 |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
|
CACHE CONFIGURATION |
|||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION |
||||
|
Size |
SW1/switch 1 |
SW1/switch 2 |
SW1/switch 3 |
SW1/switch 4 |
|
64KB |
Off |
Off |
Off |
Off |
|
128KB |
Off |
On |
Off |
On |
|
256KB |
On |
On |
On |
Off |
|
CPU TYPE CONFIGURATION |
|
|
Type |
JP5 |
|
80486SX |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 and 3 & 4 closed |
|
ODP486SX |
pins 1 & 2 and 3 & 4 closed |
|
80486DX2 |
pins 1 & 2 and 3 & 4 closed |
|
CPU SPEED CONFIGURATION |
||
|
Speed |
JP8 |
JP9 |
|
25MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
33MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
50iMHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
66iMHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
VESA WAIT STATE/BUS SPEED CONFIGURATION |
||
|
CPU speed |
Wait states |
JP7 |
|
£ 33MHz |
0 wait states |
Open |
|
> 33MHz |
1 wait state |
Closed |