QUICKPATH SYSTEMS, INC.
486SX/DX MOTHERBOARD
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
16/20/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB |
|
BIOS |
MR |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
KEY |
Speaker |
SPK |
|
Turbo LED |
LED |
Turbo switch |
TSW |
|
Reset switch |
RST | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Bus speed select ATCLK/4 |
JP2 |
Open | |
|
Bus speed select ATCLK/6 |
JP2 |
Closed | |
|
Password check enabled |
JP6 |
Closed | |
|
Password check disabled |
JP6 |
Open | |
|
CMOS memory normal operation |
JP7 |
pins 2 & 3 closed | |
|
CMOS memory clear |
JP7 |
pins 1 & 2 closed | |
|
Battery type select internal |
JP13 |
pins 1 & 2 closed | |
|
Battery type select external |
JP13 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |
|
Size |
Bank 0 |
|
64KB |
(9) 8K x 8 |
|
256KB |
(9) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP9 |
JP10 |
JP11 |
JP12 |
|
64KB |
Open |
Open |
Open |
Open |
|
256KB |
Closed |
Closed |
Open |
Closed |
|
CPU CONFIGURATION | |||||
|
Type |
OSC1 |
JP1 |
JP3 |
JP4 |
JP5 |
|
80486SX-16MHz |
32MHz |
2 & 3 |
2 & 3 |
Open |
Open |
|
80486SX-20MHz |
40MHz |
2 & 3 |
2 & 3 |
Open |
Open |
|
80486SX-25MHz |
50MHz |
2 & 3 |
2 & 3 |
Open |
Open |
|
80487SX-20MHz |
40MHz |
2 & 3 |
1 & 2 |
Closed |
1 & 2 |
|
80486DX-25MHz |
50MHz |
2 & 3 |
1 & 2 |
Closed |
2 & 3 |
|
80486DX-33MHz |
66MHz |
2 & 3 |
1 & 2 |
Closed |
2 & 3 |
|
80486DX-50MHz |
50MHz |
1 & 2 |
1 & 2 |
Closed |
2 & 3 |
|
80486DX2-50MHz |
25MHz |
2 & 3 |
1 & 2 |
Closed |
2 & 3 |
|
80486DX2-66MHz |
33MHz |
2 & 3 |
1 & 2 |
Closed |
2 & 3 |
|
Note:Pins designated should be in the closed position. | |||||