FIRST INTERNATIONAL COMPUTER, INC.
486-GVT-2
|
Processor |
CX486S/80486SX/CX487S/CX486DX/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 |
|
Dimensions |
259mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2), PS/2 mouse port |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
J1 |
Speaker |
J10 |
|
Green power supply |
J3 |
Power LED & keylock |
J11 |
|
External battery |
J4 |
PS/2 mouse port |
CN2 |
|
Turbo LED |
J8 |
Mouse connector |
CN4 |
|
Reset switch |
J9 |
32-bit VESA Local bus slots |
SL0 & SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Monitor type select monochrome |
J2 |
Open |
|
Monitor type select color |
J2 |
Closed | |
|
» |
CMOS memory normal operation (Internal Battery) |
J5 |
pins 2 & 3 closed |
|
CMOS memory normal operation (External Battery) |
J5 |
pins 1 & 2 closed | |
|
» |
Transfer rate < 5.7MB/s |
J6 |
Open |
|
Adaptec ISA master SCSI card (transfer rate > 5.7MB/s) |
J6 |
Closed | |
|
» |
CMOS memory normal operation |
J7 |
Closed |
|
CMOS memory clear |
J7 |
Open | |
|
» |
Cyrix CPU 1X clock mode |
J12 |
pins 2 & 3 closed |
|
Cyrix CPU 2X clock mode |
J12 |
pins 1 & 2 closed | |
|
80486SX/P23S/P4S/CX486S disabled |
JC6 |
Closed | |
|
80486SX/P23S/P4S/CX486S enabled |
JC6 |
Open | |
|
» |
Factory configured - do not alter |
JP1 |
pins 1 & 2 closed |
|
» |
IRQ 15 (regular CPU) |
JP2,JX2 |
pins 1 & 2 closed |
|
SMI (Cyrix/Intel S series) |
JP2,JX2 |
pins 2 & 3 closed | |
|
» |
Local bus IDE interface disabled |
JP4 |
pins 1 & 2 closed |
|
Local bus IDE interface enabled (SL0 only) |
JP4 |
pins 2 & 3 closed | |
|
» |
Factory configured - do not alter |
JP5 |
pins 1 & 2 closed |
|
P24T write back |
JT1 |
pins 1 & 2 closed | |
|
P24T write through |
JT1 |
pins 2 & 3 closed | |
|
» |
Intel S-series CPU |
JCX1 |
Open |
|
Cyrix CX486S/DX |
JCX1 |
Closed | |
|
» |
Intel S-series CPU |
JCX2 |
pins 1 & 2 closed |
|
Cyrix CX486S/DX |
JCX2 |
pins 2 & 3 closed | |
|
» |
CPU clock 1X |
JX1 |
pins 1 & 2 closed |
|
CPU clock 2X |
JX1 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
|
1MB |
NONE |
(1) 256K x 36 |
NONE |
|
1MB |
NONE |
NONE |
(1) 256K x 36 |
|
2MB |
(4) 256K x 9 |
(1) 256K x 36 |
NONE |
|
2MB |
NONE |
(1) 256K x 36 |
(1) 256K x 36 |
|
2MB |
(4) 256K x 9 |
NONE |
(1) 256K x 36 |
|
3MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 256K 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) 256K x 36 |
NONE |
|
5MB |
(4) 1M x 9 |
NONE |
(1) 256K x 36 |
|
5MB |
NONE |
(1) 256K x 36 |
(1) 1M x 36 |
|
DRAM CONFIGURATION (CONTINUED) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
5MB |
NONE |
(1) 1M x 36 |
(1) 256K x 36 |
|
6MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 256K x 36 |
|
6MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
6MB |
(4) 1M x 9 |
(1) 256K x 36 |
(1) 256K 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) 256K x 36 |
(1) 1M x 36 |
|
9MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 256K x 36 |
|
12MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 256K 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) 256K x 36 |
(1) 4M x 36 |
|
17MB |
NONE |
(1) 4M x 36 |
(1) 256K x 36 |
|
17MB |
(4) 4M x 9 |
(1) 256K x 36 |
NONE |
|
17MB |
(4) 4M x 9 |
NONE |
(1) 256K x 36 |
|
18MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 4M x 36 |
|
18MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
18MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 256K 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) 256K x 36 |
(1) 4M x 36 |
|
21MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
21MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
21MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 256K 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) 256K x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
36MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
36MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 4M 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) 1M x 36 |
NONE |
|
65MB |
(4) 16M x 9 |
NONE |
(1) 1M x 36 |
|
66MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 1M 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) 1M x 36 |
(1) 1M x 36 |
|
69MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 1M 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) 1M x 36 |
(1) 1M x 36 |
|
81MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
81MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 1M 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 |
RN13 |
RN14 |
RN16 |
|
CX486S & 487S/DX |
Not installed |
Not installed |
Installed |
|
SX/DX/DX2 |
Not installed |
Not installed |
Not installed |
|
P23S/P4S/P24S |
Installed |
Not installed |
Not installed |
|
P23S/P4S/CX486S |
Not installed |
Installed |
Not installed |
|
CPU TYPE CONFIGURATION | ||||||
|
CPU type |
JC1 |
JC2 |
JC3 |
JC4 |
JC5 |
JC7 |
|
CX486S |
2 & 3 |
2 & 3 |
Closed |
Open |
Open |
1 & 2 |
|
CX486S/487S |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
1 & 2 |
|
486SX/P23S |
2 & 3 |
2 & 3 |
Open |
Open |
Closed |
1 & 2 |
|
CX486DX |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
1 & 2 |
|
DX/DX2 |
1 & 2 |
1 & 2 |
Closed |
Open |
Closed |
1 & 2 |
|
P24S/P4S |
1 & 2 |
1 & 2 |
Closed |
Open |
Closed |
1 & 2 |
|
P24T |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
2 & 3 |
|
Note: pins designated should be in the closed position. | ||||||
|
CPU CLOCK SELECT | ||||
|
Speed |
JK1 |
JK2 |
JK3 |
JK4 |
|
25MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
33MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
40MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
50MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
66MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
80MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
100MHz |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
VESA WAIT STATE/BUS SPEED CONFIGURATION | |||
|
CPU speed |
Wait states |
JV2 |
JV3 |
|
< 33MHz |
0 wait states |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
> 33MHz |
1 wait state |
pins 2 & 3 closed |
pins 2 & 3 closed |