JOINDATA SYSTEMS, INC.
G486U/G486USX
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Processor |
80486SX/80487SX/80486DX |
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Processor Speed |
20/25/33/50MHz |
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Chip Set |
UMC |
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Max. Onboard DRAM |
64MB |
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Cache |
64/128/256KB |
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BIOS |
AMI/MR |
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Dimensions |
215mm x 330mm |
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I/O Options |
None |
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NPU Options |
4167 |
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CONNECTIONS |
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Purpose |
Location |
Purpose |
Location |
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Reset switch |
J9 |
Speaker |
J12 |
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Turbo switch |
J11 |
Power LED & keylock |
J13 |
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Turbo LED |
J10 |
External battery |
J14 |
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USER CONFIGURABLE SETTINGS |
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Function |
Jumper |
Position |
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Monitor type select color |
JP15 |
Closed |
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Monitor type select monochrome |
JP15 |
Open |
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DRAM CONFIGURATION |
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Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
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1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
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2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
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3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
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4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
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4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
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5MB |
(4) 256K x 9 |
(4) 1 M x 9 |
NONE |
NONE |
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6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1 M x 9 |
NONE |
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8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
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9MB |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
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10MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
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12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
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16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
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16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
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20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
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24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
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32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
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36MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
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40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
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48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
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64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
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CACHE CONFIGURATION |
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Size |
Bank 0 |
Bank 1 |
Tag |
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64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(3) 16K x 4 |
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128KB |
(4) 32K x 8 |
NONE |
(3) 16K x 4 |
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256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(3) 16K x 4 |
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CACHE JUMPER CONFIGURATION |
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Size |
W14 |
W15 |
W16 |
W17 |
W18 |
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64KB |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
2 & 3 |
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128KB |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
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256KB |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
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Note: Pins designated should be in the closed position. |
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CPU TYPE CONFIGURATION |
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Type |
W5 |
W10 |
W11 |
W12 |
W13 |
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80486SX |
Closed |
Open |
Open |
Open |
pins 1 & 2 closed |
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80487SX |
Open |
Closed |
pins 2 & 3 closed |
Closed |
pins 2 & 3 closed |
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80486DX |
Open |
Closed |
pins 1 & 2 closed |
Closed |
pins 2 & 3 closed |