FIRST INTERNATIONAL COMPUTER, INC.
486-GVT (REV. A2)
|
Processor |
CX486S/80486SX/CX486DX/CX487S/80486DX/80486DX2/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/50/66(internal)/66MHz |
|
Chip Set |
VIA |
|
Max. Onboard DRAM |
96MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI/Award |
|
Dimensions |
259mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Speaker |
J12 |
|
Turbo LED |
J9 |
Power LED & keylock |
J13 |
|
Turbo switch |
J10 |
32-bit VESA Local bus slot |
SL1 |
|
Reset switch |
J11 |
32-bit VESA Local bus slot |
SL2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Battery select - internal |
J2 |
pins 2 & 3 closed |
|
Battery select - external |
J2 |
pins 1 & 2 closed | |
|
» |
Monitor type select monochrome/EGA/VGA |
J4 |
Open |
|
Monitor type select color |
J4 |
Closed | |
|
» |
Password clear - AMI |
J7 |
pins 2 & 3 closed |
|
Password clear - Award |
J7 |
pins 1 & 2 closed | |
|
» |
Factory configured - do not alter |
J8 |
pins 1 & 2 closed |
|
» |
80486SX/P23S/P4S/CX486S PQFP disabled |
JC6 |
Open |
|
80486SX/P23S/P4S/CX486S PQFP enabled |
JC6 |
Closed | |
|
» |
CPU 2X clock mode |
JX1 |
pins 2 & 3 closed |
|
CPU 1X clock mode |
JX1 |
pins 1 & 2 closed | |
|
» |
Factory configured - do not alter |
JX2 |
pins 2 & 3 closed |
|
» |
Keyboard select - external |
JKB1-4, JX3 |
pins 1 & 2 closed |
|
Keyboard select - internal |
JKB1-4, JX3 |
pins 2 & 3 closed | |
|
» |
Intel S-series CPU |
JCX1 |
Open |
|
CX486S |
JCX1 |
Closed | |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
|
1MB |
NONE |
(1) 256KB x 36 |
NONE |
|
1MB |
NONE |
NONE |
(1) 256KB x 36 |
|
2MB |
(4) 256K x 9 |
(1) 256KB x 36 |
NONE |
|
2MB |
NONE |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
2MB |
(4) 256K x 9 |
NONE |
(1) 256KB x 36 |
|
3MB |
(4) 256K x 9 |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
|
4MB |
NONE |
(1) 1M x 36 |
NONE |
|
4MB |
NONE |
NONE |
(1) 1M x 36 |
|
5MB |
(4) 256K x 9 |
(1) 1M x 36 |
NONE |
|
5MB |
(4) 256K x 9 |
NONE |
(1) 1M x 36 |
|
5MB |
(4) 1M x 9 |
(1) 256KB x 36 |
NONE |
|
5MB |
(4) 1M x 9 |
NONE |
(1) 256KB x 36 |
|
5MB |
NONE |
(1) 256KB x 36 |
(1) 1M x 36 |
|
5MB |
NONE |
(1) 1M x 36 |
(1) 256KB x 36 |
|
6MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 256KB x 36 |
|
6MB |
(4) 256K x 9 |
(1) 256KB x 36 |
(1) 1M x 36 |
|
6MB |
(4) 1M x 9 |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
8MB |
(4) 1M x 9 |
(1) 1M x 36 |
NONE |
|
8MB |
(4) 1M x 9 |
NONE |
(1) 1M x 36 |
|
8MB |
NONE |
(1) 1M x 36 |
(1) 1M x 36 |
|
9MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
9MB |
(4) 1M x 9 |
(1) 256KB x 36 |
(1) 1M x 36 |
|
9MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 256KB x 36 |
|
DRAM CONFIGURATION | |||
|
12MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 256KB x 36 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
|
16MB |
NONE |
(1) 4M x 36 |
NONE |
|
16MB |
NONE |
NONE |
(1) 4M x 36 |
|
17MB |
(4) 256K x 9 |
(1) 4M x 36 |
NONE |
|
17MB |
(4) 256K x 9 |
NONE |
(1) 4M x 36 |
|
17MB |
NONE |
(1) 256KB x 36 |
(1) 4M x 36 |
|
17MB |
NONE |
(1) 4M x 36 |
(1) 256KB x 36 |
|
17MB |
(4) 4M x 9 |
(1) 256KB x 36 |
NONE |
|
17MB |
(4) 4M x 9 |
NONE |
(1) 256KB x 36 |
|
18MB |
(4) 256K x 9 |
(1) 256KB x 36 |
(1) 4M x 36 |
|
18MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 256KB x 36 |
|
18MB |
(4) 4M x 9 |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
20MB |
(4) 1M x 9 |
(1) 4M x 36 |
NONE |
|
20MB |
(4) 1M x 9 |
NONE |
(1) 4M x 36 |
|
20MB |
(4) 4M x 9 |
(1) 1M x 36 |
NONE |
|
20MB |
(4) 4M x 9 |
NONE |
(1) 1M x 36 |
|
20MB |
NONE |
(1) 1M x 36 |
(1) 4M x 36 |
|
20MB |
NONE |
(1) 4M x 36 |
(1) 1M x 36 |
|
21MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
21MB |
(4) 1M x 9 |
(1) 256KB x 36 |
(1) 4M x 36 |
|
21MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 256KB x 36 |
|
21MB |
(4) 4M x 9 |
(1) 256KB x 36 |
(1) 1M x 36 |
|
21MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 256KB x 36 |
|
24MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
24MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
24MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
32MB |
(4) 4M x 9 |
(1) 4M x 36 |
NONE |
|
32MB |
(4) 4M x 9 |
NONE |
(1) 4M x 36 |
|
32MB |
NONE |
(1) 4M x 36 |
(1) 4M x 36 |
|
33MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 256KB x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 256KB x 36 |
|
36MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
36MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
36MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(4) 16M x 9 |
NONE |
NONE |
|
65MB |
(4) 16M x 9 |
(1) 256KB x 36 |
NONE |
|
65MB |
(4) 16M x 9 |
NONE |
(1) 256KB x 36 |
|
66MB |
(4) 16M x 9 |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
68MB |
(4) 16M x 9 |
(1) 1M x 36 |
NONE |
|
68MB |
(4) 16M x 9 |
NONE |
(1) 1M x 36 |
|
69MB |
(4) 16M x 9 |
(1) 256KB x 36 |
(1) 1M x 36 |
|
DRAM CONFIGURATION | |||
|
69MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 256KB x 36 |
|
72MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(4) 16M x 9 |
NONE |
NONE |
|
65MB |
(4) 16M x 9 |
(1) 256KB x 36 |
NONE |
|
65MB |
(4) 16M x 9 |
NONE |
(1) 256KB x 36 |
|
66MB |
(4) 16M x 9 |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
68MB |
(4) 16M x 9 |
(1) 1M x 36 |
NONE |
|
68MB |
(4) 16M x 9 |
NONE |
(1) 1M x 36 |
|
69MB |
(4) 16M x 9 |
(1) 256KB x 36 |
(1) 1M x 36 |
|
69MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 256KB x 36 |
|
72MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
80MB |
(4) 16M x 9 |
(1) 4M x 36 |
NONE |
|
80MB |
(4) 16M x 9 |
NONE |
(1) 4M x 36 |
|
81MB |
(4) 16M x 9 |
(1) 256KB x 36 |
(1) 256KB x 36 |
|
81MB |
(4) 16M x 9 |
(1) 256KB x 36 |
(1) 4M x 36 |
|
81MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 256KB x 36 |
|
84MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
84MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
96MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 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 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | |||
|
CPU Type |
RN9 |
RN10 |
RN11 |
|
CX486S/CX486DX (PGA) |
Installed |
Not installed |
Not installed |
|
CX486S(PQFP) |
Not installed |
Not installed |
Installed |
|
CX487S |
Installed |
Not installed |
Not installed |
|
486SX/DX/DX2 |
Not installed |
Not installed |
Not installed |
|
486 SL-Enhanced (PGA) |
Not installed |
Installed |
Not installed |
|
486 SL-Enhanced (PQFP) |
Not installed |
Not installed |
Installed |
|
CPU TYPE CONFIGURATION | |||||
|
CPU Type |
JC1 |
JC2 |
JC3 |
JC4 |
JC5 |
|
486SX/486 SL Enhanced |
2 & 3 |
2 & 3 |
Open |
Open |
Closed |
|
CX486S |
2 & 3 |
2 & 3 |
Closed |
Open |
Open |
|
CX487S |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
|
CX486DX |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
|
80486DX/DX2 |
1 & 2 |
1 & 2 |
Closed |
Open |
Closed |
|
486 SL-Enhanced |
1 & 2 |
1 & 2 |
Closed |
Open |
Closed |
|
Pentium Overdrive |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
|
Note: pins designated should be in the closed position. | |||||
|
CPU SPEED SELECT - JK1 | ||||
|
Speed |
Pins 1 & 2 |
Pins3 & 4 |
Pins 5 & 6 |
Pins 7 & 8 |
|
25MHz |
Open |
Open |
Closed |
Open |
|
33MHz |
Closed |
Open |
Open |
Open |
|
40MHz |
Closed |
Closed |
Open |
Open |
|
40iMHz |
Closed |
Open |
Closed |
Closed |
|
50MHz |
Open |
Open |
Closed |
Closed |
|
50iMHz |
Open |
Closed |
Open |
Open |
|
66MHz |
Open |
Closed |
Open |
Closed |
|
66iMHz |
Closed |
Open |
Open |
Closed |
|
80MHz |
Closed |
Closed |
Open |
Closed |
|
VESA WAIT STATE/BUS SPEED CONFIGURATION | |||
|
CPU speed |
Wait states |
JV1 |
JV2 |
|
< 33MHz |
0 wait states |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
> 33MHz |
1 wait state |
pins 1 & 2 closed |
pins 1 & 2 closed |