Abit FU3 Version 1
ABIT COMPUTER CORPORATION
FU3
| Processor |
80386SX |
| Processor Speed |
25/33MHz |
| Chip Set |
C & T |
| Max. Onboard DRAM |
32MB |
| Cache |
32/64/128/256KB |
| BIOS |
AMI |
| Dimensions |
330mm x 218mm |
| I/O Options |
None |
| NPU Options |
80387SX/3167 |
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location |
|
Turbo LED |
D4 |
Power LED & keylock |
J19 |
|
External battery |
JP2 |
Turbo switch |
J50 |
|
Speaker |
J18 |
Reset switch |
J51 |
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
|
� |
Factory configured - do not alter |
J21 |
Open |
|
� |
Fast gate A20 enabled |
J22 |
Closed |
|
Fast gate A20 disabled |
J22 |
Open | |
|
� |
Monitor type select color |
J23 |
Closed |
|
Monitor type select monochrome |
J23 |
Open | |
|
� |
CMOS memory normal operation |
J42 |
pins 2 & 3 closed |
|
CMOS memory clear |
J42 |
pins 1 & 2 closed | |
|
� |
Factory configured - do not alter |
JP1 |
N/A |
| 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 |
|
8MB |
(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 |
|
32KB |
(4) 8K x 8 |
NONE |
(2) 16K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(2) 16K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(2) 64K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(2) 64K x 8 |
| CACHE JUMPER CONFIGURATION | |||||||
| Size | J26 | J27 | J28 | J29 | J33 | J34 | J35 |
|
32KB |
1 & 2 |
Open |
Open |
Closed |
Closed |
1 & 2 |
2 & 3 |
|
64KB |
1 & 2 |
1 & 2 |
Open |
Closed |
Closed |
Open |
1 & 2 |
|
128KB |
2 & 3 |
1 & 2 |
2 & 3 |
Closed |
Open |
1 & 2 |
1 & 2 |
|
256KB |
2 & 3 |
1 & 2 |
1 & 2 |
Open |
Open |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||||
| CACHE JUMPER CONFIGURATION( CON'T) | |||||||
| Size | J36 | J37 | J38 | J39 | J41 | J52 | J60 |
|
32KB |
2 & 3 |
2 & 3 |
Open |
2 & 3 |
Open |
1 & 2 |
Open |
|
64KB |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
Open |
1 & 2 |
Open |
|
128KB |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
Closed |
2 & 3 |
Open |
|
256KB |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
Closed |
2 & 3 |
Closed |
|
Note: Pins designated should be in the closed position. The locations of J52 & J60 are unidentified. | |||||||
