FIRST INTERNATIONAL COMPUTER, INC.
486 VAV (REV. B1)
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
VIA |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI/Award |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Parallel port |
CN1 |
VGA port |
CN8 |
|
Floppy drive interface |
CN2 |
Chassis fan power |
CN9 |
|
IDE interface |
CN3 |
IDE interface LED |
CN10 |
|
PS/2 mouse port |
CN4 |
Power LED & keylock |
CN11 |
|
Serial port 1 & 2 |
CN5 |
Turbo LED |
J2 |
|
VGA feature connector |
CN6 |
32-bit VESA Local bus slot |
S1 |
|
Reset switch |
CN7 |
32-bit VESA Local bus slot |
S2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Password normal |
J7 |
Open |
|
Password clear |
J7 |
Closed | |
|
» |
Monitor type select color |
J10 |
pins 1 & 2 closed |
|
Monitor type select monochrome |
J10 |
pins 2 & 3 closed | |
|
» |
VGA interrupt enabled |
J11 |
Closed |
|
VGA interrupt disabled |
J11 |
Open | |
|
» |
Factory configured - do not alter |
JC7 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP1 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JK1 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JK2 |
pins 1 & 2 closed |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
2MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
3MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
4MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
4MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
5MB |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
6MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
7MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
8MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
12MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
16MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
16MB |
(1) 16M x 36 |
NONE |
NONE |
NONE |
|
17MB |
(1) 16M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
18MB |
(1) 16M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
19MB |
(1) 16M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
20MB |
(1) 16M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
21MB |
(1) 16M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
NONE |
|
22MB |
(1) 16M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
24MB |
(1) 16M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
28MB |
(1) 16M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
32MB |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
33MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 1M x 36 |
NONE |
|
36MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 4M x 36 |
NONE |
|
40MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
|
64MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG |
MD1 (Dirty bit) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
JS1 |
JS2 |
JS3 |
|
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
128KB |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
VRAM CONFIGURATION | ||||
|
Size |
M1 |
M2 |
M3 |
M4 |
|
1MB |
N/A |
N/A |
(1) 256 x 16 |
(1) 256 x 16 |
|
2MB |
(1) 256 x 16 |
(1) 256 x 16 |
N/A |
N/A |
|
Note: M3 & M4 are factory installed and are not configurable. | ||||
|
CPU TYPE CONFIGURATION | |||
|
Speed |
JC1 |
JC2 |
JC3 |
|
SX25MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
DX25MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
DX33MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
DX50iMHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
DX50MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
DX66MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION - JK5 | ||||
|
Setting |
Pins 1 & 2 |
Pins 3 & 4 |
Pins 5 & 6 |
Pins 7 & 8 |
|
25MHz |
Open |
Closed |
Open |
Open |
|
33MHz |
Closed |
Open |
Open |
Closed |
|
50iMHz |
Open |
Closed |
Open |
Open |
|
66iMHz |
Closed |
Open |
Open |
Closed |