NCL 537B Hard Disk/Floppy Controller Settings and Configuration

NCL AMERICA

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 IDE(AT) Interface connector	J4
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 is IRQ14	JP3	pins 1 & 2 closed
	Hard drive Interrupt is IRQ15	JP3	pins 2 & 3 closed
»	Floppy drive DMA Request is DREQ2	JP4	pins 1 & 2 closed
	Floppy drive DMA Request is DREQ3	JP4	pins 2 & 3 closed

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	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

MISCELLANEOUS TECHNICAL NOTES

Trace must be cut to change Jumpers JP1, JP2, JP3, and JP4.