DTC2278S Hard Disk/Floppy Controller Settings and Configuration

Data bus:	32-bit VL-Bus
Size:	Three/quarter-length, half-height card
Hard drive supported:	Two IDE(AT) interface drives
Floppy drives supported:	Two 360KB, 720KB, 1.2MB, 1.44MB drives

CONNECTIONS
Function	Location
10-pin serial port 2 - internal	J2
9-pin serial port 1 - external (via ribbon cable)	J3
16-pin game port	J4
34-pin cable connector - floppy drive	J5
40-pin connector - secondary IDE(AT) interface	J6
40-pin connector - primary IDE(AT) interface	J7
4-pin connector - drive active LED	J8
25-pin parallel port - external	J9

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Floppy drive interface enabled	W7	pins 2 & 3 closed
	Floppy drive interface disabled	W7	pins 1 & 2 closed
»	Game port enabled	W8	closed
	Game port disabled	W8	open
»	Parallel port is uni-directional	W17	closed
	Parallel port is bi-directional	W17	open

PARALLEL PORT ADDRESS SELECTION
LPT		W1	W2
»	LPT1 (378h)	pins 2 & 3 closed	pins 1 & 2 closed
	LPT2 (278h)	pins 1 & 2 closed	pins 2 & 3 closed
	LPT3 (3BCh)	pins 2 & 3 closed	pins 2 & 3 closed
	Disabled	pins 1 & 2 closed	pins 1 & 2 closed

SERIAL PORT 1 ADDRESS SELECTION
COM		W5	W6
»	COM1 (3F8h)	pins 1 & 2 closed	pins 2 & 3 closed
	COM3 (3E8h)	pins 2 & 3 closed	pins 1 & 2 closed
	COM4 (2E8h)	pins 2 & 3 closed	pins 2 & 3 closed
	Disabled	pins 1 & 2 closed	pins 1 & 2 closed

SERIAL PORT 2 ADDRESS SELECTION
COM		W3	W4
»	COM2 (2F8h)	pins 1 & 2 closed	pins 2 & 3 closed
	COM3 (3E8h)	pins 2 & 3 closed	pins 2 & 3 closed
	COM4 (2E8h)	pins 2 & 3 closed	pins 1 & 2 closed
	Disabled	pins 1 & 2 closed	pins 1 & 2 closed

PARALLEL PORT INTERRUPT
IRQ		W9	W10
»	IRQ7	open	closed
	IRQ5	closed	open

SERIAL PORT 1 INTERRUPT SELECT
IRQ		W14	W15	W16
»	IRQ4	open	open	closed
	IRQ3	open	closed	open
	IRQ5	closed	open	open

SERIAL PORT 2 INTERRUPT SELECT
IRQ		W11	W12	W13
»	IRQ3	open	open	closed
	IRQ4	open	closed	open
	IRQ5	closed	open	open