SNB-C042 Hard Disk/Floppy Controller Settings and Configuration

Data Bus	16-bit ISA
Card Size	Half-height, half-length
Hard Drives Supported	Two IDE(AT) devices
Floppy Drives Supported	Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function	Label	Function	Label
25-pin parallel port - external	J1	40-pin IDE(AT) connector	J5
10-pin serial port 1 - internal	J2	2-pin drive active LED	J6
10-pin serial port 2 - internal	J3	16-pin game port	J7
34-pin cable connector - floppy drive	J4

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Floppy drive interface enabled	JP1/G	Pins 1 & 2 closed
	Floppy drive interface disabled	JP1/G	Pins 2 & 3 closed
»	IDE(AT) interface enabled	JP1/H	Pins 1 & 2 closed
	IDE(AT) interface disabled	JP1/H	Pins 2 & 3 closed

SERIAL PORT 1 ADDRESS
Setting		JP1/A	JP1/B
»	3F8h (COM1:)	Pins 1 & 2 closed	Pins 2 & 3 closed
	3E8h (COM3:)	Pins 2 & 3 closed	Pins 1 & 2 closed
	Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed

SERIAL PORT 1 INTERRUPT
Setting		JP2/A	JP2/B	JP2/C
	IRQ3	Open	Closed	Open
»	IRQ4	Closed	Open	Open
	IRQ5	Open	Open	Closed

SERIAL PORT 2 ADDRESS
Setting		JP1/C	JP1/D
»	2F8h (COM2:)	Pins 1 & 2 closed	Pins 2 & 3 closed
	2E8h (COM4:)	Pins 2 & 3 closed	Pins 1 & 2 closed
	Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed

SERIAL PORT 2 INTERRUPT
Setting		JP2/D	JP2/E	JP2/F
»	IRQ3	Closed	Open	Open
	IRQ4	Open	Closed	Open
	IRQ5	Open	Open	Closed

PARALLEL PORT ADDRESS
Setting		JP1/E	JP1/F
»	378h	Pins 1 & 2 closed	Pins 2 & 3 closed
	278h	Pins 2 & 3 closed	Pins 1 & 2 closed
	Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed

PARALLEL PORT INTERRUPT
Setting	JP2/G	JP2/H
IRQ5	Open	Closed
IRQ7	Closed	Open