DTC2278D+ (400537-89A) Hard Disk/Floppy Controller Settings and Configuration

Card Type	Hard drive controller card
Hard drives supported	Four IDE(AT) interface drives
Floppy drives supported	Two 360KB, 720KB, 1.2MB, 1.44MB drives
Data-bus	32-bit VESA Local Bus
Size	Full-length, half-height card

CONNECTIONS
Function	Label	Function	Label
25-pin parallel port - external	J1	34-pin control cable connector - floppy drive	J5
10-pin serial port 2 - internal	J2	40-pin IDE(AT) secondary interface connector	J6
9-pin serial port 1 - external	J3	40-pin IDE(AT) primary interface connector	J7
16-pin game port - internal	J4	Drive active LED	J8

USER CONFIGURABLE CONNECTIONS
Function		Location	Setting
»	Game port enabled	W14	Closed
	Game port disabled	W14	Open

SERIAL PORT 1 ADDRESS SELECTION
Setting		W5	W6
»	COM1 (3F8h)	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM3 (3E8h)	Pins 2 & 3 closed	Pins 1 & 2 closed
	Disabled	Pins 1 & 2 closed	Pins 1 & 2 closed

SERIAL PORT 2 ADDRESS SELECTION
Setting		W3	W4
»	COM2 (2F8h)	Pins 1 & 2 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 ADDRESS SELECTION
Setting	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 INTERRUPT SELECTION
IRQ		W19	W20	W21
	IRQ3	Open	Closed	Open
»	IRQ4	Open	Open	Closed
	IRQ5	Closed	Open	Open

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		W16	W17	W18
»	IRQ3	Open	Open	Closed
	IRQ4	Open	Closed	Open
	IRQ5	Closed	Open	Open

PARALLEL PORT INTERRUPT SELECTION
IRQ		W12	W13
	IRQ5	Closed	Open
»	IRQ7	Open	Closed

MISCELLANEOUS TECHNICAL NOTES

The parallel port on the DTC2278D+ only supports bidirectional mode.