CONNECTIONS
Function	Location
50-pin SCSI connector-external	J1
50-pin SCSI connector-internal	J2
34-pin data cable connector-floppy drive (DTC3280A only)	J3
4-pin connector-drive active LED	J4

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Single-speed floppy supported	W3/jumper 7	open
	Dual-speed floppy supported	W3/jumper 7	closed
»	PS/2-type floppy on Drive Select 2 not supported	W3/jumper 8	closed
	PS/2-type floppy drive on Drive Select 2 supported	W3/jumper 8	open
»	Floppy drive precomp. is scaled by data rate: 500KHz=125ns, 300KHz=208ns, 250KHz=250ns	W3/jumper 9	open
	Floppy drive precompensation is 125ns	W3/jumper 9	closed
»	Floppy drive enabled	W3/jumper 10	closed
	Floppy drive disabled	W3/jumper 10	open
»	Factory configured - do not alter	W4/jumper 3	open
»	Factory configured - do not alter	W4/jumper 4	open
»	SCSI parity check enabled	W4/jumper 5	open
	SCSI parity check disabled	W4/jumper 5	closed
»	2KB SRAM selected	W1	pins 2 & 3 closed
	8KB SRAM selected	W1	pins 1 & 2 closed
»	Floppy drive address 3F2-3F7h	W2	pins 1 & 2 closed
	Floppy drive address 372-377h	W2	pins 2 & 3 closed

INTERRUPT REQUEST
IRQ		W4/jumper 1	W4/jumper 2
»	IRQ11	open	closed
	IRQ12	closed	open
	IRQ10	closed	closed
	IRQ15	open	open

INQUIRY INTERRUPT REQUEST "B " OPTIONS
IRQ		W3/jumper 1	W3/jumper 2	W3/jumper 3	W3/jumper 4
»	IRQ11	open	open	closed	open
	IRQ10	open	open	open	closed
	IRQ12	open	closed	open	open
	IRQ15	closed	open	open	open
	Disabled	open	open	open	open

BIOS ADDRESS
Address		W3/jumper 5	W3/jumper 6
»	D800h	open	open
	C800h	open	closed
	DC00h	closed	open
	CC00h	closed	closed

SCSI ADDRESS
SCSI ID		W4/jumper 6	W4/jumper 7	W4/jumper 8
	0	closed	closed	closed
	1	open	closed	closed
	2	closed	open	closed
	3	open	open	closed
	4	closed	closed	open
	5	open	closed	open
	6	closed	open	open
»	7	open	open	open