ACER, INC.
V20-486 ALL IN ONE
|
Processor |
AM486/80486SX/80486DX/80486DX2/80486DX4/P24D/P24T |
|
Processor Speed |
25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz |
|
Chip Set |
ALI |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
Unidentified |
|
Maximum Video Memory |
None |
|
Cache |
128/256/512KB |
|
BIOS |
Acer |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slot, 32-bit PCI slots (2), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port 2 |
CN1 |
Reset switch |
CN9 pins 7 & 8 |
|
Serial port 1 |
CN2 |
Power LED & keylock |
CN10 pins 1 - 5 |
|
Parallel port |
CN3 |
Speaker |
CN10 pins 7 - 10 |
|
Floppy drive interface |
CN4 |
Turbo LED |
CN10 pins 12 & 13 |
|
IDE interface 1 |
CN5 |
Turbo switch |
CN10 pins 15 - 17 |
|
IDE interface 2 |
CN6 |
Reset switch |
CN10 pins 19 & 20 |
|
PS/2 mouse port |
CN7 |
32-bit PCI slots |
PC11 - PC3 |
|
IDE interface LED |
CN8 |
32-bit VESA local bus slot |
SL1 |
|
Power LED & keylock |
CN9 pins 1 - 4 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Password enabled |
J1 |
Pins 1 & 2 closed |
|
Password disabled |
J1 |
Pins 2 & 3 closed | |
|
|
BIOS type select Acer |
J2 |
Pins 1 & 2 closed |
|
BIOS type select OEM |
J2 |
Pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
J3 |
Pins 3 & 4 closed |
|
|
Factory configured - do not alter |
J4 |
Closed |
|
|
Factory configured - do not alter |
J6 |
Pins 2 & 3 closed |
|
|
Factory configured - do not alter |
J7 |
Pins 2 & 3 closed |
|
|
M5115 I/O enabled |
J8 |
Pins 1 & 2 closed |
|
M5115 I/O disabled |
J8 |
Pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
J10 |
Pins 1 & 2 closed |
|
|
Local bus IDE I/O address select 0FXH |
J11 |
Pins 1 & 2 closed |
|
Local bus IDE I/O address select 07XH |
J11 |
Pins 2 & 3 closed | |
|
|
Local bus IDE enabled |
J12 |
Pins 2 & 3 closed |
|
Local bus IDE disabled |
J12 |
Pins 1 & 2 closed | |
|
|
Reset switch enabled |
J23 |
Pins 1 & 2 closed |
|
Reset switch disabled |
J23 |
Pins 2 & 3 closed | |
|
|
Green PC connector disabled |
J24 |
Pins 1 & 2 closed |
|
Green PC connector enabled |
J24 |
Pins 2 & 3 closed | |
|
DRAM CONFIGURATION |
|
Note: The maximum amount of memory is unidentified. |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
128KB |
(4) 32K x 8 |
None |
(1) 32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
512KB |
(4) 128K x 8 |
None |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
J13 |
J15 |
J16 |
|
128KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
256KB |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
512KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CPU SPEED SELECTION | ||
|
Speed |
JP17 |
JP21 |
|
25MHz |
Pins 1 & 5 closed |
Pins 2 & 3 closed |
|
33MHz |
Pins 2 & 6 closed |
Pins 2 & 3 closed |
|
50iMHz |
Pins 1 & 5 closed |
Pins 2 & 3 closed |
|
66iMHz |
Pins 2 & 6 closed |
Pins 2 & 3 closed |
|
75iMHz |
Pins 1 & 5 closed |
Pins 2 & 3 closed |
|
100iMHz |
Pins 2 & 6 closed |
Pins 2 & 3 closed |
|
CPU TYPE SELECTION | ||
|
Type |
J9 |
J20 |
|
Intel S-series |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
P24D |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
P24T |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
CPU TYPE SELECTION | ||
|
Type |
J26 |
J27 |
|
Intel |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
AMD |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
CPU MULTIPLIER SELECTION | |
|
Multiplier |
J22 |
|
2x |
Pins 3 & 4 closed |
|
2.5x |
Pins 2 & 3 closed |
|
3x |
Pins 1 & 2 closed |