ABC COMPUTER COMPANY, LTD.
A4865
|
Processor |
80486DX |
|
Processor Speed |
33MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card slot |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J10 |
Turbo LED |
JP12 |
|
Power LED & Keylock |
J23 |
Reset switch |
SW1 |
|
Speaker |
J24 |
Turbo switch |
SW2 |
|
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 | |
|
Normal operation - do not alter |
JP205 |
Open | |
|
Factory test (system burn in) |
JP205 |
Closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1MB x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
|
28MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
36MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
52MB |
(4) 1M x 9 |
(4) 4M 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 utilized when a 32-bit external memory card is installed. | ||||
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Tag |
Dirty Bit |
|
64KB |
(8) 8K x 8 |
NONE |
(1) 8K x 8 |
(1) 64K x 1 |
|
128KB |
(8) 8K x 8 |
(8) 8K x 8 |
(1) 8K x 8 |
(1) 64K x 1 |
|
256KB |
(8) 32K x 8 |
NONE |
(1) 32K x 8 |
(1) 64K x 1 |
|
512KB |
(8) 32K x 8 |
(8) 32K x 8 |
(1) 32K x 8 |
(1) 64K x 1 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP8 |
JP9 |
JP10 |
JP11 |
JP206 |
|
64KB |
open |
open |
open |
open |
pins 2 & 3 closed |
|
128KB |
closed |
open |
open |
closed |
pins 2 & 3 closed |
|
256KB |
closed |
closed |
open |
closed |
pins 2 & 3 closed |
|
512KB |
closed |
closed |
closed |
closed |
pins 1 & 2 closed |