FIRST INTERNATIONAL COMPUTER, INC.
LEO 486-VIP
|
Processor |
80486SX/80486SL/80487SX/CX486DX/80486DX/80486DX2 80486DX4/Pentium Overdrive |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
VIA |
|
Max. Onboard DRAM |
96MB |
|
Cache |
64/128/256KB |
|
BIOS |
Award |
|
Dimensions |
219mm x 271mm |
|
I/O Options |
32-bit VESA local bus slots (2), 32-bit PCI slots (3), PS/2 mouse port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN2 |
Green status LED |
J5 |
|
3.3V daughter board (80486DX4 only) |
CN5 |
32-bit VESA Local bus slot |
S1 |
|
Turbo switch |
CN6 |
32-bit VESA Local bus slot |
S2 |
|
Turbo LED |
CN7 |
32-bit PCI slot |
PCI1 |
|
Reset switch |
CN8 |
32-bit PCI slot |
PCI2 |
|
Speaker |
CN9 |
32-bit PCI slot |
PCI3 |
|
Power LED & keylock |
CN10 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
Monitor type select color |
J2 |
Closed |
|
Monitor type select monochrome/EGA/VGA |
J2 |
Open | |
|
» |
CMOS memory normal operation |
J3 |
Open |
|
CMOS memory clear |
J3 |
Closed | |
|
» |
Normal operation |
J7 |
Open |
|
Password clear |
J7 |
Closed | |
|
» |
CPU select Cyrix DX |
JT1 |
pins 1 & 2 closed |
|
CPU select Cyrix DX2 |
JT1 |
pins 2 & 3 closed | |
|
» |
80486DX4 3X mode |
JT2 |
pins 1 & 2 closed |
|
80486DX4 2X mode |
JT2 |
pins 2 & 3 closed | |
|
» |
Pentium Overdrive internal write-back cache |
JT3 |
pins 1 & 2 closed |
|
Pentium Overdrive internal write-through cache |
JT3 |
pins 2 & 3 closed | |
|
» |
Pentium Overdrive disabled |
JT4 |
pins 1 & 2 closed |
|
Pentium Overdrive enabled |
JT4 |
pins 2 & 3 closed | |
|
» |
Normal operation |
JT5 |
pins 1 & 2 closed |
|
For card that uses A31 |
JT5 |
pins 2 & 3 closed | |
|
» |
Address area is proogrammed in VT82C505 |
JT6 |
pins 1 & 2 closed |
|
Supports IRQ15 when SMI# is used |
JT6 |
pins 2 & 3 closed | |
|
» |
Factory configured - do not alter |
JT7 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JT8 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JT9 |
pins 1 & 2 closed |
|
» |
Normal operation |
JT10 |
pins 2 & 3 closed |
|
PCI IDE card is installed |
JT10 |
pins 1 & 2 closed | |
|
» |
Factory configured - do not alter |
JT11 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JX2 |
pins 2 & 3 closed |
|
NoteJumper JT5 and JT6 cannot be closed at the same time. | |||
|
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) 1M x 36 |
NONE |
|
5MB |
(4) 1M x 9 |
NONE |
(1) 1M x 36 |
|
5MB |
NONE |
(1) 256K x 36 |
(1) 1M x 36 |
|
5MB |
NONE |
(1) 1M x 36 |
(1) 256K x 36 |
|
DRAM CONFIGURATION (CONTINUED) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
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) 256K x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
8MB |
(4) 256K x 9 |
(1) 1M x 36 |
NONE |
|
8MB |
(4) 256K 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) 256K x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
9MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 256K x 36 |
|
12MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 1M 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) 1M x 36 |
(1) 4M x 36 |
|
17MB |
NONE |
(1) 4M x 36 |
(1) 256K x 36 |
|
17MB |
(4) 4M x 9 |
(1) 1M 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 |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
|
20MB |
(4) 1M x 9 |
NONE |
(1) 4M x 36 |
|
20MB |
(4) 4M x 9 |
(1) 4M x 36 |
NONE |
|
20MB |
(4) 4M x 9 |
NONE |
(1) 4M x 36 |
|
20MB |
NONE |
(1) 4M x 36 |
(1) 4M x 36 |
|
20MB |
NONE |
(1) 4M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
21MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
24MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
24MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
24MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M 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 |
|
32MB |
NONE |
(1) 4M x 36 |
NONE |
|
32MB |
NONE |
NONE |
(1) 16M x 36 |
|
33MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
DRAM CONFIGURATION (CONTINUED) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
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) 256K x 36 |
NONE |
|
65MB |
(4) 16M x 9 |
NONE |
(1) 1M x 36 |
|
66MB |
(4) 16M x 9 |
(1) 256K x 36 |
(1) 256K 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) 256K x 36 |
(1) 1M x 36 |
|
69MB |
(4) 16M x 9 |
(1) 1M x 36 |
(1) 256K 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) 256K x 36 |
(1) 4M x 36 |
|
81MB |
(4) 16M x 9 |
(1) 16M x 36 |
(1) 1M x 36 |
|
84MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
84MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
96MB |
(4) 16M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
KEYBOARD CONFIGURATION | ||||
|
Select |
JRN4 |
JRN5 |
JRN6 |
JRN7 |
|
Internal |
Installed |
Not installed |
Installed |
Not installed |
|
External |
Not installed |
Installed |
Not installed |
Installed |
|
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 | ||||||
|
Type |
JC2 |
JC3 |
JC4 |
JP1 |
JT12 |
JX1 |
|
80486SX |
pins 2 & 3 |
pins 2 & 3 |
Open |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
80487SX |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
CX486S |
pins 2 & 3 |
pins 2 & 3 |
Open |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
Intel SL enhanced |
N/A |
N/A |
N/A |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
AM486DXL |
N/A |
N/A |
N/A |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
80486DX |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
CX486DX |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
80486DX2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
80486DX4 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
Pentium Overdrive |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. | ||||||
|
CPU TYPE CONFIGURATION (CONTINUED) | |||||
|
Type |
JN1 |
JN2 |
JRN1 |
JRN2 |
JRN3 |
|
80486SX |
Open |
Open |
N/A |
N/A |
N/A |
|
80487SX |
Open |
Open |
N/A |
N/A |
N/A |
|
CX486S |
Open |
Open |
Not installed |
Not installed |
Installed |
|
Intel SL enhanced |
Open |
Open |
Not installed |
Installed |
Not installed |
|
AM486DXL |
Open |
Open |
Installed |
Not installed |
Not installed |
|
80486DX |
Open |
Open |
Not installed |
Not installed |
Not installed |
|
CX486DX |
Open |
Open |
Not installed |
Not installed |
Installed |
|
80486DX2 |
Open |
Open |
Not installed |
Not installed |
Not installed |
|
80486DX4 |
Open |
Open |
Not installed |
Installed |
Not installed |
|
Pentium Overdrive |
Closed |
Closed |
Not installed |
Installed |
Not installed |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JCK0 |
JCK1 |
JCK2 |
JCK3 |
|
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 |
|
50iMHz |
pins 2 & 3 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 |
|
66iMhz |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION | |||
|
CPU speed |
Wait states |
JV1 |
JV2 |
|
< 33MHz |
0 wait states |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
> 33MHz |
1 wait state |
pins 2 & 3 closed |
pins 2 & 3 closed |