NCL AMERICA
NCL 5475, NCL 5476
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Data bus:
16-bit, ISASize:
Half-length, full-height cardHard drives supported:
Two ST506/412 MFM drivesFloppy drives supported:
NCL 5475: Two 360KB, 720KB, 1.2MB, or 1.44MBNCL 5476: None
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CONNECTIONS | |
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34-pin control cable connector-hard drive |
CN1 |
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20-pin data cable connector-drive 0 |
CN2 |
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20-pin data cable connector-drive 1 |
CN3 |
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34-pin data cable connector-floppy drive (NCL 5475 only) |
CN4 |
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4-pin connector-drive active LED |
CN5 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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Hard drive port address is 1F0-1F7h |
JP1 |
pins 1 & 2 closed |
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Hard drive port address is 170-177h |
JP1 |
pins 2 & 3 closed | |
| » |
Floppy drive port address is 3F2-3F7h (5475 only) |
JP2 |
closed |
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Floppy drive port address is 372-377h (5475 only) |
JP2 |
open | |
| » |
Unit select turn on the LED |
JP6 |
open |
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Drive select turn on the LED |
JP6 |
closed | |
| » |
Hard Drive Interrupt is IRQ14 (Hard-wired) |
JP9 |
pins 2 & 3 closed |
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Hard Drive Interrupt is IRQ15 |
JP9 |
pins 1 & 2 closed | |
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MISCELLANEOUS TECHNICAL NOTES |
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Jumpers JP3, JP4, JP5, JP7, and JP8 are factory configured in the open position - do not alter. |