ABIT COMPUTER CORPORATION
486 EISA-AE4
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
22/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED |
JP8 |
Reset switch |
JP18 |
|
Turbo LED |
JP16 |
Speaker |
JP19 |
|
Turbo switch |
JP17 |
Power LED & keylock |
JP22 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP3 |
Open | |
|
Factory configured - do not alter |
JP4 |
Open | |
|
Factory configured - do not alter |
JP9 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP10 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP11 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP21 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP23 |
Closed | |
|
Monitor type select color |
JP24 |
Open | |
|
Monitor type select monochrome |
JP24 |
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 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG (U20 and U24) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(2) 16K x 4 |
|
128KB |
(4) 32K x 8 |
NONE |
(2) 16K x 4 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(2) 16K x 4 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP1 |
JP2 |
JP12 |
JP13 |
|
64KB |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
128KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
256KB |
pins 4 & 5 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP5 |
JP7 |
JP15 |
|
80486SX |
Open |
pins 2 & 3 closed |
Open |
|
80487SX |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |