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.
| |||||||