...because we can't all be on the bleeding edge...





NCL 5455, NCL 5456

NCL AMERICA

NCL 5455, NCL 5456

Data bus:

16-bit, ISA

Size:

Half-length, full-height card

Hard drives supported:

Two ST506/412 MFM drives

Floppy drives supported:

NCL 5455: Two 360 KB, 720 KB, 1.2 MB or 1.44 MB drives

 

NCL 5456: None

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 (NCL 5455 only)

CN4

4-pin connector-drive active LED

CN5

5-pin DC power connector

CN6

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Hard drive address is 1F0-1F7h

JP1

pins 1 & 2 closed

 

Hard drive address is 170-177h

JP1

pins 2 & 3 closed

32Kb ROM enabled

JP2

pins 1 & 2 closed

 

16Kb ROM enabled

JP2

pins 2 & 3 closed

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive port address is 3F2-3F7h

JP7

closed

 

Floppy drive port address is 372-377h

JP7

open

Cache enabled

JP11

open

 

Cache disabled

JP11

closed

 

4Kb buffer enabled

JP12

open

 

16Kb buffer enabled

JP12

closed

 

4Kb buffer size selected

JP14, JP15, JP16

pins 1 & 2 closed

 

16Kb buffer size selected

JP14, JP15, JP15

pins 2 & 3 closed

MISCELLANEOUS TECHNICAL NOTES

All other jumpers are for factory tests and configured as follows: JP4, JP5 - closed; JP6, JP8, JP13 - open; JP9, JP10 - pins 2 & 3 closed - do not alter.