GIGA-BYTE TECHNOLOGY CO., LTD.
GA-486VP
Processor 80486SX/80487SX/CX486S/CX486S2/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set UMC
Max. Onboard 64MB
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 230mm x 218mm
I/O Options 32-bit VESA local bus slots (3)
NPU Options None
[Image]
CONNECTIONS
Purpose Location Purpose Location
External battery J2 Power LED & keylock J9
Turbo LED J5 32-bit VESA Local bus S1
slot
Reset switch J6 32-bit VESA Local bus S2
slot
Turbo switch J7 32-bit VESA Local bus S3
slot
Speaker J8
USER CONFIGURABLE SETTINGS
Function Jumper Position
» CMOS memory normal operation J3 pins 1 & 2
closed
CMOS memory clear J3 pins 2 & 3
closed
» Monitor type select CGA J11 Closed
Monitor type select all others J11 Open
DRAM CONFIGURATION
Size Bank 0 Bank 1 Bank 2 Bank 3
1MB (1) 1M x 36 NONE NONE NONE
2MB (1) 1M x 36 (1) 1M x 36 NONE NONE
3MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE
4MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36
4MB (1) 4M x 36 NONE NONE NONE
5MB (1) 1M x 36 (1) 4M x 36 NONE NONE
6MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE
8MB (1) 4M x 36 (1) 4M x 36 NONE NONE
9MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE
10MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36
12MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE
16MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36
16MB (1) 16M x 36 NONE NONE NONE
20MB (1) 4M x 36 (1) 16M x 36 NONE NONE
24MB (1) 4M x 36 (1) 4M x 36 (1) 16M x 36 NONE
32MB (1) 16M x 36 (1) 16M x 36 NONE NONE
36MB (1) 4M x 36 (1) 16M x 36 (1) 16M x 36 NONE
40MB (1) 4M x 36 (1) 4M x 36 (1) 16M x 36 (1) 16M x 36
48MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 NONE
64MB (1) 16M x 36 (1) 16M x 36 (1) 16M x 36 (1) 16M 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 W0 W1 W2 W3 W4
64KB pins 1 & Open Open pins 1 & pins 1 &
2 2 2
128KB pins 1 & Closed Open pins 2 & pins 2 &
2 3 3
256KB pins 2 & Closed Closed pins 1 & pins 2 &
3 2 3
Note:Pins designated should be in the closed position.
CPU TYPE CONFIGURATION
Type JP3 W6
80486SX Open pins 2 & 3 closed
CX486S Open pins 2 & 3 closed
CX486S2 Closed pins 2 & 3 closed
80487SX Open pins 1 & 2 closed
80486DX Open pins 1 & 2 closed
80486DX2 Open pins 1 & 2 closed
CPU SPEED CONFIGURATION
Speed JP2 JP6 W7 W8 W9
25MHz pins 1 & Open pins 1 & pins 2 & pins 2 &
2 2 3 3
33MHz pins 1 & Open pins 1 & pins 1 & pins 1 &
2 2 2 2
40MHz pins 2 & Closed pins 1 & pins 1 & pins 2 &
3 2 2 3
50iMHz pins 1 & Open pins 1 & pins 2 & pins 2 &
2 2 3 3
50MHz pins 2 & Closed pins 2 & pins 2 & pins 1 &
3 3 3 2
66iMHz pins 1 & Open pins 1 & pins 1 & pins 1 &
2 2 2 2
Note:Pins designated should be in the closed position.