GSI, INC.
MODEL 21
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Data bus: |
16-bit, ISA |
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Size: |
Half-length, half-height card |
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Hard drive supported: |
Two IDE (AT) Interface drives |
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Floppy drives supported: |
Four 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB drives |
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CONNECTIONS | |
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Function |
Location |
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34-pin control cable connector - regular/2.88MB floppy drive |
J2 |
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34-pin control cable connector - regular floppy drive |
J3 |
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5-pin connector - DC power |
J5 |
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40-pin IDE(AT) Interface connector |
J6 |
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4-pin connector - Drive active LED |
J8 |
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BIOS ADDRESS | |||
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Settings for Model 21 with Part # 1533-21-04-3 or earlier | |||
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Address |
J4/jumper 1 |
J4/jumper 2 | |
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C800-C9FFh |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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D800-D9FFh |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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DC00-DDFFh |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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E000-E1FFh |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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Note: On Model 21 with Part # 1533-21-03-6 or earlier address D000-D1FFh is selected instead of E000-E1FFh. | |||
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BIOS ADDRESS | |||
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Settings for Model 21 with Part # 1533-21-06-8 or later | |||
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Address |
J4/jumper 3 |
J4/jumper 4 | |
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C800-C9FFh |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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D000-D1FFh |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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D800-D9FFh |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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E000-E1FFh |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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Note: On Model 21 with Part # 1533-21-05-0 address E400-E5FFh is selected instead of E000-E1FFh. | |||
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MISCELLANEOUS TECHNICAL NOTES |
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On Model 21 with Part # 1533-21-06-8 or later J4/jumper 2 is factory configured to pins 2 & 3 closed - do not alter. J4/jumper 1 is not used on Model 21 with Part # 1533-21-06-8 or later. J4/jumper 3 and J4/jumper 4 are not used on Model 21 with Part # 1533-21-04-3 or earlier. |