GIGA-BYTE TECHNOLOGY CO., INC.
GA-486VS REV.8C
|
Processor |
CX486M6/AM486/80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
Award |
|
Dimensions |
230mm 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 |
J1 |
Power LED & keylock |
J7 |
|
Turbo switch |
J3 |
Green PC connector |
JP33 |
|
Turbo LED |
J4 |
Green PC LED connector |
JP34 |
|
Speaker |
J5 |
32-bit VESA local bus slots |
S1 - S3 |
|
Reset switch |
J6 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
CPU type select all CPUs |
JP11 |
Closed |
|
CPU type select AMD CPU only |
JP11 |
Open | |
|
|
CMOS memory normal operation |
JP16 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP16 |
pins 2 & 3 closed | |
|
|
Monitor type select CGA |
JP17 |
Closed |
|
Monitor type select all others |
JP17 |
Open | |
|
|
CPU type select all CPU types |
JP21 |
pins 2 & 3 closed |
|
CPU type select Cyrix, P24D, AMD enhanced CPU only |
JP21 |
pins 1 & 2 closed | |
|
|
Green PC normal operation |
JP26 |
Open |
|
Green PC green mode |
JP26 |
Closed | |
|
|
Cache type select write through |
JP30 |
pins 2 & 3 closed |
|
Cache type select write back |
JP30 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
NONE |
NONE |
NONE |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
NONE |
|
2MB |
(1) 512K x 36 |
NONE |
NONE |
NONE |
|
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 512K x 36 |
NONE |
|
4MB |
(1) 512K x 36 |
(1) 512K x 36 |
NONE |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
6MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
|
6MB |
(1) 512K x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
8MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
|
8MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
8MB |
(1) 2M x 36 |
NONE |
NONE |
NONE |
|
10MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 2M x 36 |
(1) 2M x 36 |
NONE |
NONE |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
17MB |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
18MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
|
18MB |
(1) 512K x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
20MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 4M x 36 |
NONE |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
24MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
|
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
|
24MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
NONE |
|
DRAM CONFIGURATION (CONT) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
32MB |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
(1) 2M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
32MB |
(1) 8M x 36 |
NONE |
NONE |
NONE |
|
36MB |
(1) 512K x 36 |
(1) 512K x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
36MB |
(1) 1M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 8M x 36 |
NONE |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
48MB |
(1) 4M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(1) 16M x 36 |
NONE |
NONE |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 8M x 36 |
NONE |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
NONE |
|
65MB |
(1) 256K x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
68MB |
(1) 1M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
68MB |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
72MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 16M x 36 |
NONE |
|
72MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
|
80MB |
(1) 4M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
80MB |
(1) 4M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
96MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 16M x 36 |
NONE |
|
96MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
|
96MB |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
128MB |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
128MB |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M x 36 |
(1) 8M 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) 16K x 8 or (1) 32K x 8 |
|
256KB |
(4) 64K x 8 |
NONE |
(1) 16K x 8 or (1) 32K x 8 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP1 |
JP2 |
JP3 |
JP4 |
|
64KB |
Open |
Open |
Open |
N/A |
|
128KB |
Closed |
Open |
Open |
pins 1 & 2 closed |
|
256KB |
Closed |
Closed |
Open |
pins 2 & 3 closed |
|
256KB |
Closed |
Closed |
Open |
pins 1 & 2 closed |
|
512KB |
Closed |
Closed |
Closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | |
|
Type |
JP24 |
|
CX486M6 |
pins 2 & 3 closed |
|
AM486SL |
pins 2 & 5 closed |
|
P24D |
pins 2 & 5 closed |
|
AM486DX4 2x |
pins 3 & 4 closed |
|
AM486DX4 3x |
pins 3 & 4 open |
|
80486DX4 2x |
pins 3 & 4 closed |
|
80486DX4 3x |
pins 3 & 4 open |
|
CPU TYPE CONFIGURATION | ||
|
Type |
JP8 |
JP18 |
|
CX486M6 |
N/A |
Open |
|
80486SX |
pins 2 & 3 closed |
Closed |
|
80486DX |
pins 1 & 2 closed |
Closed |
|
80486DX2 |
pins 1 & 2 closed |
Closed |
|
80486DX4 |
pins 1 & 2 closed |
Closed |
|
Pentium Overdrive |
pins 1 & 2 closed |
Closed |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP5 |
JP6 |
JP7 |
JP29 |
|
25MHz |
Open |
Open |
Closed |
Open |
|
33MHz |
Closed |
Closed |
Closed |
Open |
|
40MHz |
Open |
Closed |
Closed |
Closed |
|
50iMHz |
Open |
Open |
Closed |
Open |
|
50MHz |
Closed |
Open |
Open |
Closed |
|
66iMHz |
Closed |
Closed |
Closed |
Open |
|
75i (40 x 2) MHz |
Open |
Closed |
Closed |
Closed |
|
75i (25 x 3) MHz |
Open |
Open |
Closed |
Open |
|
100i (50 x 2) MHz |
Closed |
Open |
Open |
Closed |
|
100i (33 x 3) MHz |
Closed |
Closed |
Closed |
Open |
|
CPU VOLTAGE CONFIGURATION | ||
|
Function |
JP36 |
JP37 |
|
3.3 v |
Open |
Open |
|
5 v |
Closed |
Closed |
|
VOLTAGE DELAY CONFIGURATION | ||||
|
Function |
J2 |
J8 |
J9 |
JP20 |
|
Normal card installed |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
Card installed needs address time |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
|
Note: Pins designated should be in closed position. Systems utilizing cards that need more address time are: DX4-100, DX4-75, DX2-66, DX-50, DX-40, DX-33. | ||||