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NCL DB825

NATIONAL COMPUTERS, LTD. (NCL AMERICA)

NCL DB825

Data bus:

16-bit, ISA

Size:

Half-length, full-height card

Hard drive supported:

Two IDE (AT) Interface drives

Floppy drives supported:

Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Location

34-pin control cable connector - floppy drive

J3

40-pin 3 1/2" IDE(AT) Interface connector

J4

44-pin 2 1/2" IDE(AT) Interface connector

J5

4-pin connector - Drive active LED

JP10

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive DMA Acknowledge is DACK2

JP1

pins 1 & 2 closed

 

Floppy drive DMA Acknowledge is DACK3

JP1

pins 2 & 3 closed

Interrupt Request is IRQ6

JP2

pins 1 & 2 closed

 

Interrupt Request is IRQ10

JP2

pins 2 & 3 closed

Hard drive Interrupt Request is IRQ14

JP3

pins 1 & 2 closed

 

Hard drive Interrupt Request is IRQ15

JP3

pins 2 & 3 closed

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive DMA Request is DREQ2

JP4

pins 1 & 2 closed

 

Floppy drive DMA Request is DREQ3

JP4

pins 2 & 3 closed

Hard drive port address is 1F0-1F7h

JP6

open

 

Hard drive port address is 170-177h

JP6

closed

Floppy drive port address is 3F2-3F7h

JP7

open

 

Floppy drive port address is 372-377h

JP7

closed

Normal operation enabled

JP8

open

 

Diagnostic mode enabled

JP8

closed

I/O Channel Ready signal disabled

JP9

open

 

I/O Channel Ready signal enabled

JP9

closed

BIOS enabled

JP11

closed

 

BIOS disabled

JP11

open

Primary BIOS mode enabled

JP12

closed

 

Co-existing BIOS mode enabled

JP12

open

BIOS ADDRESS

Address

JP5/jumper 1

JP5/jumper 2

C800h

open

open

 

CC00h

closed

open

 

D800h

open

closed

 

DC00h

closed

closed