ABC A3866
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.
| |||||