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NCL 5427

NCL AMERICA

NCL 5427

Data bus: 8-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Two MFM ST506/412

Floppy drives supported: None

CONNECTIONS

Function

Location

34-pin control cable connector-hard drive

CN1

20-pin data cable connector-drive 0

CN2

20-pin data cable connector-drive 1

CN3

5-pin connector-DC power

CN4

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Supports up to 8 heads

JP1

pins 1 & 2 closed

 

Supports up to 16 heads

JP1

pins 2 & 3 closed

BIOS DRIVE TYPE TABLE FOR THE NCL5427 - SW1

Hd/Cyl

#

1

2

3

4

5

6

7

8

3/1024

1

on

on

on

off

off

off

off

off

 

2

off

off

off

off

on

on

on

on

4/612

1

on

on

off

off

off

off

off

off

 

2

off

off

off

off

on

on

on

on

6/820

1

on

off

on

off

off

off

off

on

5/1024

1

on

off

on

off

off

off

off

on

4/612

1

off

on

on

off

off

off

off

off

 

2

off

off

off

off

off

on

on

off

8/1024

1

off

on

off

off

off

off

off

on

4/306

1

off

off

on

off

off

off

off

off

 

2

off

off

off

off

off

off

on

off

8/615

1

off

off

off

off

off

off

off

on

7/1024

1

on

on

on

on

off

off

off

on

9/1024

1

on

on

off

on

off

off

off

on

5/695

1

on

on

on

on

off

off

off

off

 

2

on

on

off

on

on

off

on

off

6/1024

1

off

on

off

on

off

off

off

on

10/823

1

on

on

on

on

off

off

off

off

 

2

on

on

off

on

off

on

on

off

4/1024

1

on

on

off

on

off

off

off

on

5/820

1

on

on

on

on

off

off

off

on

7/820

1

on

on

off

on

off

off

off

on

Note:SW1/switch 8 must be "on" before power-up to enable the drive splitting feature.

MISCELLANEOUS TECHNICAL NOTES

This controller has a built-in, low-level format program. To enter the program run the DEBUG utility supplied with DOS and at the prompt enter: G=C800:5