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 |