ABC COMPUTER COMPANY, LTD.
A4872
|
Processor |
80486DX |
|
Processor Speed |
33MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
32MB |
|
Cache |
256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Reset switch |
J9 |
|
Turbo LED |
J7 |
Speaker |
J10 |
|
Turbo switch |
J8 |
Power LED & keylock |
J11 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
J4 |
Closed | |
|
Monitor type select monochrome |
J4 |
Open | |
|
Factory configured - do not alter |
J5 |
Open | |
|
CMOS memory normal operation |
J6 |
pins 1 & 2 closed | |
|
CMOS memory clear |
J6 |
pins 2 & 3 closed | |
|
Factory configured - do not alter |
W1 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W2 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W3 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W4 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W5 |
pins 2 & 3 closed | |
|
Factory configured - do not alter |
W10 |
Open | |
|
Factory configured - do not alter |
W11 |
Open | |
|
Factory configured - do not alter |
W15 |
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 |
|
5MB |
(4) 256K x 9 |
(4) 1 M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
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 |
(4) 16K x 4 |
|
128KB |
(4) 32K x 8 |
NONE |
(4) 16K x 4 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(4) 16K x 4 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
W6 |
W7 |
W8 |
W9 |
|
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
Open |
pins 1 & 2 closed |
|
128KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | |||
|
Type |
W12 |
W13 |
W14 |
|
80486SX |
Open |
pins 2 & 3 closed |
Open |
|
80487SX |
Closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
80486DX |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |