ABIT COMPUTER CORPORATION
486DX-AX4
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
245mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Turbo LED |
JW3 |
|
Power LED & keylock |
JW1 |
Reset switch |
JW4 |
|
Speaker |
JW2 |
Turbo switch |
JW5 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
Factory configured - do not alter |
JP7 |
Open |
| » |
Factory configured - do not alter |
JP9 |
Open |
| » |
CMOS memory normal operation |
JP8 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP8 |
pins 2 & 3 closed | |
| » |
Monitor type select color |
JP10 |
Closed |
|
Monitor type select monochrome |
JP10 |
Open | |
| » |
Factory configured - do not alter |
JP14 |
Open |
|
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 |
|
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 |
JPX1 |
|
64KB |
pins 1 - 8 closed |
|
128KB |
pins 5 - 12 closed |
|
256KB |
pins 7 - 14 closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
JP11 |
JP12 |
|
80486SX |
Not installed |
Closed |
|
80486DX |
Installed |
Open |
|
80486DX2 |
Installed |
Open |