ACER, INC.
V-12
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
128MB |
|
Maximum Video Memory |
None |
|
Cache |
128/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3), green PC connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP6 |
Green PC connector |
JP12 pins 15 - 17 |
|
Power LED & keylock |
JP12 pins 1 - 5 |
Reset switch |
JP12 pins 19 & 20 |
|
Speaker |
JP12 pins 7 - 10 |
Chassis fan power |
JP30 |
|
Green PC LED |
JP12 pins 12 & 13 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
» |
Factory configured - do not alter |
JP4 |
Unidentified |
|
» |
CMOS memory normal operation |
JP5 |
Open |
|
CMOS memory clear |
JP5 |
Pins 2 & 3 closed | |
|
» |
Factory configured - do not alter |
JP7 |
Unidentified |
|
» |
Factory configured - do not alter |
JP8 |
Unidentified |
|
» |
Factory configured - do not alter |
JP10 |
Unidentified |
|
» |
Factory configured - do not alter |
JP36 |
Unidentified |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
None |
|
1MB |
None |
(4) 256K x 9 |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
None |
|
4MB |
None |
(4) 1M x 9 |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
5MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
None |
|
16MB |
None |
(4) 4M x 9 |
|
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
None |
|
65MB |
(4) 16M x 9 |
(4) 256K x 9 |
|
68MB |
(4) 16M x 9 |
(4) 1M x 9 |
|
80MB |
(4) 16M x 9 |
(4) 4M x 9 |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
Note: The location of banks 0 & 1 are unidentified. | ||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
128KB |
(4) 32K x 8 |
None |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
Note: The location of banks 0 & 1 are unidentified. | ||
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
JP1 |
JP2 |
JP3 |
|
128KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
256KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
CPU SPEED SELECTION | |
|
Speed |
JP11 |
|
25MHz |
Pins 1 & 2, 3 & 4, 5 & 6 closed |
|
33MHz |
Pins 1 & 2, 3 & 4 closed |
|
40MHz |
Pins 1 & 2, 5 & 6 closed |
|
50iMHz |
Pins 1 & 2, 3 & 4, 5 & 6 closed |
|
50MHz |
Pins 1 & 2 closed |
|
66iMHz |
Pins 1 & 2, 3 & 4 closed |
|
VL BUS SPEED SELECTION | |
|
Speed |
JP14 |
|
<= 33MHz |
Pins 1 & 2 closed |
|
>33 MHz |
Pins 3 & 4 closed |