NCL 5275, NCL 5276 Hard Disk/Floppy Controller Settings and Configuration
NCL AMERICA
NCL 5275, NCL 5276
Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Two ST506/412 RLL drives
Floppy drives supported: NCL 5275: Two 360KB, 720KB, 1.2MB, or 1.44MB
NCL 5276: None
Maximum heads/cyl.: 16 heads and 2048 cylinders
CONNECTIONS | |
34-pin control cable connector-hard drive | CN1 |
20-pin data cable connector-drive 0 | CN2 |
20-pin data cable connector-drive 1 | CN3 |
34-pin data cable connector-floppy drive | CN4 |
4-pin connector-drive active LED | CN5 |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | Hard Drive Interrupt is IRQ14 (hard wired) | JP1 | pins 2 & 3 closed |
Hard Drive Interrupt is IRQ15 | JP1 | pins 1 & 2 closed | |
| » | INDEX signal is used directly (5276 only) | JP2 | open |
INDEX signal is selected by SYNC signal (5276 only) | JP2 | closed | |
| » | Floppy drive port address is 3F0-3F7h (5276 only) | JP3 | closed |
Floppy drive port address is 370-377h (5276 only) | JP3 | open | |
| » | Factory configured - do not alter | JP4 | open |
| » | Factory configured - do not alter | JP5 | open |
| » | 11 bit ECC burst length | JP6 | closed |
5 bit ECC burst length | JP6 | open | |
| » | Factory configured - do not alter | JP7 | open |
| » | LED is lit only during access | JP8 | open |
LED always lit once unit is selected | JP8 | closed | |
| » | BIOS enabled | JP9 | closed |
BIOS disabled | JP9 | open | |
| » | Hard drive port address is 1F0-1F7h | JP10 | pins 1 & 2 closed |
Hard drive port address is 170-177h | JP10 | pins 2 & 3 closed | |
| » | BIOS address is C800h | JP11 | pins 1 & 2 closed |
BIOS address is D800h | JP11 | pins 2 & 3 closed | |
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