FIRST INTERNATIONAL COMPUTER, INC.
80486 (VER. 2)
|
Processor |
CX486M6/80486SX/AM486DXLT/CX486M7/UMC U5/80486DX/ 80486DX2/80486DX4/SL80486DX4/P24D/P24T |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz |
|
Chip Set |
C & T |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
64MB |
|
Maximum Video Memory |
None |
|
Cache |
64/128/256/512/1024KB |
|
BIOS |
AMI |
|
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 |
JP1 |
Reset switch |
JP20 |
|
Power LED & keylock |
JP15 |
Turbo switch |
JP22 |
|
Speaker |
JP18 |
Green PC connector |
JP23 |
|
Turbo LED |
JP19 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Battery type select internal |
JP1 |
Pins 2 & 3 closed | |
|
Battery type select external |
JP1 |
Closed | |
|
CMOS memory clear |
JP1 |
Pins 3 & 4 closed | |
|
|
Factory configured - do not alter |
JP2 |
Open |
|
Flash BIOS voltage select 12v |
JP3 |
Pins 2 & 3 closed | |
|
Flash BIOS voltage select 5v |
JP3 |
Pins 1 & 2 closed | |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(1) 256K x 36 |
None |
None |
|
1MB |
None |
(1) 256K x 36 |
None |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
2MB |
None |
(1) 256K x 36 |
(4) 256K x 9 |
|
3MB |
(1) 256K x 36 |
(1) 256K x 36 |
(4) 256K x 9 |
|
4MB |
(1) 1M x 36 |
None |
None |
|
4MB |
None |
(1) 1M x 36 |
None |
|
5MB |
(1) 1M x 36 |
(1) 256K x 36 |
None |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
None |
|
5MB |
None |
(1) 1M x 36 |
(4) 256K x 9 |
|
6MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 9 |
|
6MB |
(1) 256K x 36 |
(1) 1M x 36 |
(4) 256K x 9 |
|
6MB |
(1) 1M x 36 |
(1) 256K x 36 |
(4) 256K x 9 |
|
8MB |
(1) 2M x 36 |
None |
None |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
None |
|
8MB |
None |
(1) 2M x 36 |
None |
|
9MB |
(1) 2M x 36 |
(1) 256K x 36 |
None |
|
9MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 9 |
|
9MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 1M x 9 |
|
9MB |
None |
(1) 2M x 36 |
(4) 256K x 9 |
|
9MB |
(1) 1M x 36 |
(1) 1M x 36 |
(4) 256K x 9 |
|
10MB |
(1) 256K x 36 |
(1) 2M x 36 |
(4) 256K x 9 |
|
12MB |
(1) 2M x 36 |
(1) 1M x 36 |
None |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 9 |
|
13MB |
(1) 256K x 36 |
(1) 2M x 36 |
(1) 1M x 9 |
|
13MB |
(1) 1M x 36 |
(1) 2M x 36 |
(4) 256K x 9 |
|
16MB |
(1) 4M x 36 |
None |
None |
|
16MB |
None |
(1) 4M x 36 |
None |
|
16MB |
(1) 1M x 36 |
(1) 2M x 36 |
(1) 1M x 9 |
|
17MB |
(1) 4M x 36 |
(1) 256K x 36 |
None |
|
17MB |
(1) 256K x 36 |
(1) 4M x 36 |
None |
|
17MB |
None |
(1) 256K x 36 |
(1) 4M x 9 |
|
DRAM CONFIGURATION (CONT) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
17MB |
(1) 256K x 36 |
None |
(1) 4M x 9 |
|
17MB |
None |
(1) 4M x 36 |
(4) 256K x 9 |
|
18MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 9 |
|
18MB |
(1) 256K x 36 |
(1) 4M x 36 |
(4) 256K x 9 |
|
18MB |
(1) 4M x 36 |
(1) 256K x 36 |
(4) 256K x 9 |
|
20MB |
(1) 4M x 36 |
(1) 1M x 36 |
None |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
None |
|
20MB |
None |
(1) 1M x 36 |
(1) 4M x 9 |
|
21MB |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 4M x 9 |
|
21MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 4M x 9 |
|
21MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 1M x 9 |
|
21MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 1M x 9 |
|
21MB |
(1) 1M x 36 |
(1) 4M x 36 |
(4) 256K x 9 |
|
21MB |
(1) 4M x 36 |
(1) 1M x 36 |
(4) 256K x 9 |
|
24MB |
(1) 2M x 36 |
(1) 4M x 36 |
None |
|
24MB |
None |
(1) 2M x 36 |
(1) 4M x 9 |
|
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 9 |
|
24MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 1M x 9 |
|
24MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 9 |
|
25MB |
(1) 256K x 36 |
(1) 2M x 36 |
(1) 4M x 9 |
|
25MB |
(1) 4M x 36 |
(1) 2M x 36 |
(4) 256K x 9 |
|
28MB |
(1) 4M x 36 |
(1) 2M x 36 |
(1) 1M x 9 |
|
32MB |
(1) 8M x 36 |
None |
None |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
None |
|
32MB |
None |
(1) 8M x 36 |
None |
|
32MB |
None |
(1) 4M x 36 |
(1) 4M x 9 |
|
33MB |
(1) 8M x 36 |
(1) 256K x 36 |
None |
|
33MB |
(1) 256K x 36 |
(1) 8M x 36 |
None |
|
33MB |
(1) 256K x 36 |
(1) 4M x 36 |
(1) 4M x 9 |
|
33MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 4M x 9 |
|
33MB |
None |
(1) 8M x 36 |
(4) 256K x 9 |
|
33MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 256K x 9 |
|
34MB |
(1) 256K x 36 |
(1) 8M x 36 |
(4) 256K x 9 |
|
36MB |
(1) 8M x 36 |
(1) 1M x 36 |
None |
|
36MB |
(1) 1M x 36 |
(1) 8M x 36 |
None |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 9 |
|
36MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 4M x 9 |
|
36MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 9 |
|
37MB |
(1) 256K x 36 |
(1) 8M x 36 |
(1) 1M x 9 |
|
37MB |
(1) 1M x 36 |
(1) 8M x 36 |
(4) 256K x 9 |
|
40MB |
(1) 2M x 36 |
(1) 8M x 36 |
None |
|
DRAM CONFIGURATION (CONT) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
40MB |
(1) 4M x 36 |
(1) 2M x 36 |
(1) 4M x 9 |
|
40MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 1M x 9 |
|
48MB |
(1) 4M x 36 |
(1) 8M x 36 |
None |
|
48MB |
(1) 8M x 36 |
(1) 4M x 36 |
None |
|
48MB |
None |
(1) 8M x 36 |
(1) 4M x 9 |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 9 |
|
49MB |
(1) 256K x 36 |
(1) 8M x 36 |
(1) 4M x 9 |
|
49MB |
(1) 4M x 36 |
(1) 8M x 36 |
(4) 256K x 9 |
|
52MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 4M x 9 |
|
52MB |
(1) 4M x 36 |
(1) 8M x 36 |
(1) 1M x 9 |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
None |
|
64MB |
(1) 4M x 36 |
(1) 8M x 36 |
(1) 4M x 9 |
|
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 (A) |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
256KB (B) |
(4) 64K x 8 |
None |
(1) 32K x 8 |
|
512KB (A) |
(4) 64K x 8 |
(4) 64K x 8 |
(1) 32K x 8 |
|
512KB (B) |
(4) 128K x 8 |
None |
(1) 32K x 8 |
|
1MB |
(4) 128K x 8 |
(4) 128K x 8 |
(1) 64K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||||
|
Size |
JP5 |
JP10 |
JP11 |
JP12 |
JP13 |
JP14 |
|
64KB |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
Open |
|
128KB |
1 & 2 |
1 & 2 |
Open |
Open |
Open |
Closed |
|
256KB (A) |
2 & 3 |
2 & 3 |
Open |
Open |
Closed |
Closed |
|
256KB (B) |
1 & 2, 3 & 4 |
1 & 2 |
Open |
Open |
Closed |
Closed |
|
512KB (A) |
2 & 3, 4 & 5 |
2 & 3 |
Open |
Closed |
Closed |
Closed |
|
512KB (B) |
1 & 2, 3 & 4, 5 & 6 |
1 & 2 |
Open |
Closed |
Closed |
Closed |
|
1MB |
2 & 3, 4 & 5, 6 & 7 |
2 & 3 |
Closed |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | ||||||
|
CPU SPEED SELECTION | |||
|
Speed |
JP6 |
JP7 |
JP8 |
|
25MHz |
Open |
Open |
Closed |
|
33MHz |
Closed |
Closed |
Closed |
|
40MHz |
Open |
Closed |
Closed |
|
50iMHz |
Open |
Open |
Closed |
|
50MHz |
Closed |
Open |
Open |
|
66iMHz |
Closed |
Closed |
Closed |
|
75iMHz |
Open |
Open |
Closed |
|
100iMHz |
Closed |
Closed |
Closed |
|
CPU TYPE SELECTION | |||
|
Type |
JP27 |
JP28 |
JP29 |
|
CX486M6 |
2 & 3, 4 & 5 |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4, 5 & 6 |
|
80486SX |
Open |
2 & 3 |
Open |
|
AM486DXLT |
Open |
2 & 3 |
2 & 3 |
|
CX486M7 |
2 & 3 |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4, 5 & 6 |
|
UMC U5 |
Open |
2 & 3 |
2 & 3 |
|
80486DX |
Open |
2 & 3 |
Open |
|
80486DX2 |
Open |
2 & 3 |
Open |
|
80486DX4 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
SL80486DX4 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
P24D |
1 & 2, 3 & 4 |
1 & 2, 4 & 5 |
1 & 2, 4 & 5 |
|
P24T |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||
|
CPU TYPE SELECTION (CONT) | |||
|
Type |
JP30 |
JP32 |
JP33 |
|
CX486M6 |
1 & 2, 3 & 4, 5 & 6 |
Open |
2 & 3 |
|
80486SX |
Open |
Open |
2 & 3 |
|
AM486DXLT |
1 & 2 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
CX486M7 |
2 & 3, 4 & 5 |
1 & 2 |
1 & 2, 3 & 4 |
|
UMC U5 |
1 & 2 |
3 & 4 |
2 & 3 |
|
80486DX |
Open |
1 & 2 |
1 & 2, 3 & 4 |
|
80486DX2 |
Open |
1 & 2 |
1 & 2, 3 & 4 |
|
80486DX4 |
5 & 6 |
1 & 2 |
1 & 2, 3 & 4 |
|
SL80486DX4 |
5 & 6 |
1 & 2 |
1 & 2, 3 & 4 |
|
P24D |
3 & 4, 5 & 6 |
1 & 2 |
1 & 2, 3 & 4 |
|
P24T |
5 & 6 |
2 & 3 |
1 & 2, 3 & 4 |
|
Note: Pins designated should be in the closed position. | |||
|
CPU MULTIPLIER SELECTION (80486DX4 ONLY) | |
|
Multiplier |
JP31 |
|
2x |
Pins 2 & 3 closed |
|
2.5x |
Pins 1 & 2 closed |
|
3x |
Open |
|
CPU VOLTAGE SELECTION | |||
|
Voltage |
JP24 |
JP25 |
JP26 |
|
3.3v |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
5v |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
VL BUS WAIT STATE SELECTION | |
|
Setting |
JP17 |
|
0 |
Open |
|
1 |
Closed |
|
VL-BUS SPEED SELECTION | |
|
Setting |
JP16 |
|
<= 33MHz |
Open |
|
>33 MHz |
Closed |