GA-486VT Motherboard Settings and Configuration
GIGA-BYTE TECHNOLOGY CO., LTD.
GA-486VT
Processor | 80486SX/80487SX/CX486S/CX486S2/80486DX/ 80486DX2/Pentium Overdrive |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | UMC |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 230mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J2 | Power LED & keylock | J9 |
Turbo LED | J5 | 32-bit VESA Local bus slot | S1 |
Reset switch | J6 | 32-bit VESA Local bus slot | S2 |
Turbo switch | J7 | 32-bit VESA Local bus slot | S3 |
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 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
32MB | (4) 4M x 9 | (4) 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 | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | W0 | W1 | W2 | W3 | W4 |
64KB | pins 1 & 2 | Open | Open | pins 1 & 2 | pins 1 & 2 |
128KB | pins 1 & 2 | Closed | Open | pins 2 & 3 | pins 2 & 3 |
256KB | pins 2 & 3 | Closed | Closed | pins 1 & 2 | pins 2 & 3 |
Note:Pins designated should be in the closed position. | |||||
CPU TYPE CONFIGURATION | |||
Type | JP3 | JP10 | W6 |
80486SX | Open | pins 1 & 2 closed | pins 2 & 3 closed |
80487SX | Open | pins 1 & 2 closed | pins 1 & 2 closed |
CX486S | Open | pins 1 & 2 closed | pins 2 & 3 closed |
CX486S2 | Closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX | Open | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX2 | Open | pins 1 & 2 closed | pins 1 & 2 closed |
Pentium Overdrive | Open | pins 2 & 3 closed | pins 1 & 2 closed |
CPU SPEED CONFIGURATION | |||
Speed | JP2 | JP6 | W5 |
20MHz | pins 1 & 2 closed | Open | Open |
25MHz | pins 1 & 2 closed | Open | Open |
33MHz | pins 1 & 2 closed | Open | Open |
40MHz | pins 2 & 3 closed | Closed | Closed |
50i MHz | pins 1 & 2 closed | Open | Open |
50MHz | pins 2 & 3 closed | Closed | Open |
66i MHz | pins 1 & 2 closed | Open | Open |
VESA CONFIGURATION | |
Setting | JP5 |
0 wait states | Open |
1 wait state | Closed |
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