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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