ABC COMPUTER COMPANY, LTD.
A3866
Processor | 80386DX |
Processor Speed | 33/40MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 20MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit external memory card slot |
NPU Options | 80387/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J10 | 32-bit external memory card | S1 |
Power LED & keylock | J23 | Reset switch | SW1 |
Speaker | J24 | Turbo switch | SW2 |
Turbo LED | JP4 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | Closed |
Monitor type select monochrome | JP1 | Open | |
» | CMOS memory normal operation | JP2 | pins 2 & 3 closed |
CMOS memory clear | JP2 | pins 1 & 2 closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | NONE | NONE | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE |
4MB | (4) 1M x 9 | NONE | NONE | NONE |
5MB | (4) 256K x 9 | (4) 1 M x 9 | NONE | NONE |
6MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
10MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE | NONE | NONE |
17MB | (4) 4M x 9 | (4) 256K x 9 | NONE | NONE |
20MB | (4) 4M x 9 | (4) 1M x 9 | NONE | NONE |
24MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | NONE |
40MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 |
64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed. |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Tag |
64KB | (4) 8K x 8 | (4) 8K x 8 | (3) 16K x 4 |
128KB | (4) 32K x 8 | NONE | (3) 16K x 4 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (3) 16K x 4 |
CACHE JUMPER CONFIGURATION | |||||
Size | JP5 | JP6 | JP7 | JP8 | JP9 |
64KB | 2 & 3 | 1 & 2 | 1 & 2 | Open | 2 & 3 |
128KB | 2 & 3 | 1 & 2 | 2 & 3 | Closed | 2 & 3 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | Closed | 1 & 2 |
Note: Pins designated should be in the closed position. |