GIGA-BYTE TECHNOLOGY CO., LTD.
GA-486QS
|
Processor |
80486SX/80486DX |
|
Processor Speed |
20/25/33MHz |
|
Chip Set |
ETEQ |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB |
|
BIOS |
AMI/MR |
|
Dimensions |
330.2mm x 218.4mm |
|
I/O Options |
32-bit external memory card slot |
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NPU Options |
4167 |
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CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
Reset switch |
J3 |
Turbo LED |
JP7 |
|
Turbo switch |
J4 |
External battery |
JP9 |
|
Speaker |
JP2 |
32-bit external memory card |
S1 |
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Power LED & keylock |
JP6 |
|
|
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USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper |
Position |
|
|
|
CMOS memory normal operation |
JP8 |
Closed |
|
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CMOS memory clear |
JP8 |
Open |
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|
Monitor type select color |
JP26 |
pins 1 & 2 closed |
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Monitor type select monochrome |
JP26 |
pins 2 & 3 closed |
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CPU type select 80486SX |
JP31 |
pins 2 & 3 closed |
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|
CPU type select 80486DX |
JP31 |
pins 1 & 2 closed |
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DRAM CONFIGURATION |
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|
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 |
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CACHE CONFIGURATION |
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|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 8K x 8 |
(2) 16K x 4 |
|
256KB |
(8) 32K x 8 |
(2) 16K x 4 |
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CACHE JUMPER CONFIGURATION |
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|
Size |
JP18 |
JP19 |
JP20 |
JP21 |
JP22 |
|
64KB |
Open |
Open |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
|
256KB |
Closed |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
Note: Main board may be factory configured with 256KB cache in which case JP18 - JP22 will not be present |
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