DTC2280E (400572-898) Hard Disk/Floppy Controller Settings and Configuration

Data-bus	16-bit ISA
Hard drives supported	Two IDE(AT) interface drives
Floppy drives supported	Two 360KB, 720KB, 1.2MB, 1.44MB drives
Size	Half-length, full-height card

CONNECTIONS
Function	Label	Function	Label
Unidentified	JP1	10-pin serial port 1 - internal	JP5
25-pin parallel port - external	JP2	34-pin control cable connector - floppy drive	JP6
16-pin game port - internal	JP3	40-pin IDE(AT) interface connector	JP7
10-pin serial port 2 - internal	JP4	Drive active LED	JP8

USER CONFIGURABLE CONNECTIONS
Function		Location	Setting
»	Factory configured - do not alter	W2	Unidentified
»	Factory configured - do not alter	W3	Unidentified
»	Game port enabled	W7	Pins 1 & 2 closed
	Game port disabled	W7	Pins 2 & 3 closed
»	Parallel port IRQ7 enabled	W9	Pins 2 & 3 closed
	Parallel port IRQ5 enabled	W9	Pins 1 & 2 closed
»	Serial port 2 enabled	W12	Pins 1 & 2 closed
	Serial port 2 disabled	W12	Pins 2 & 3 closed
»	Parallel port address is 378h (LPT1)	W13	Pins 1 & 2 closed
	Parallel port address is 278h (LPT2)	W13	Pins 2 & 3 closed
»	Serial port 2 address is 2F8h (COM2)	W14	Pins 1 & 2 closed
	Serial port 2 address is 2E8h (COM4)	W14	Pins 2 & 3 closed
»	Floppy drive interface enabled	W15	Pins 1 & 2 closed
	Floppy drive interface disabled	W15	Pins 2 & 3 closed
»	IDE(AT) interface enabled	W16	Pins 1 & 2 closed
	IDE(AT) interface disabled	W16	Pins 2 & 3 closed
»	Serial port 1 enabled	W17	Pins 1 & 2 closed
	Serial port 1 disabled	W17	Pins 2 & 3 closed

CONNECTIONS (CONTINUED)
Function		Location	Setting
»	Serial port 1 address is 3F8h (COM1)	W19	Pins 1 & 2 closed
	Serial port 1 address is 3E8h (COM3)	W19	Pins 2 & 3 closed
»	IDE(AT) interface address 1F0 - 1F7h	W20	Pins 1 & 2 closed
	IDE(AT) interface address 170 - 177h	W20	Pins 2 & 3 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		W5/ pins 1 & 3	W5/ pins 2 & 4	W5/ pins 3 & 5	W5/ pins 4 & 6	W10
»	IRQ4	N/A	N/A	N/A	N/A	Pins 2 & 3 closed
	IRQ5	N/A	N/A	N/A	N/A	Pins 1 & 2 closed
	IRQ9	Closed	Open	Open	Open	Open
	IRQ10	Open	Open	Closed	Open	Open
	IRQ11	Open	Closed	Open	Open	Open
	IRQ12	Open	Open	Open	Closed	Open

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		W4/ pins 1 & 3	W4/ pins 2 & 4	W4/ pins 3 & 5	W4/ pins 4 & 6	W8
»	IRQ3	N/A	N/A	N/A	N/A	Pins 2 & 3 closed
	IRQ4	N/A	N/A	N/A	N/A	Pins 1 & 2 closed
	IRQ9	Closed	Open	Open	Open	Open
	IRQ10	Open	Open	Closed	Open	Open
	IRQ11	Open	Closed	Open	Open	Open
	IRQ12	Open	Open	Open	Closed	Open

IDE(AT) INTERRUPT SELECTION
IRQ	W6/pins 1 & 3	W6/pins 2 & 4	W6/pins 3 & 5	W6/pins 4 & 6
IRQ11	Open	Open	Open	Closed
IRQ12	Open	Closed	Open	Open
IRQ14	Open	Open	Closed	Open
IRQ15	Closed	Open	Open	OPen

DMA CHANNEL SELECTION
Channel	W1/A	W1/B	W1/C	W1/D
1	Open	Open	Closed	Closed
3	Closed	Closed	Open	Open

PARALLEL PORT MODE SELECTION
Setting	W11	W18
Bi-Directional /ECP	Pins 1 & 2 closed	Pins 2 & 3 closed
EPP	Pins 2 & 3 closed	Pins 1 & 2 closed
Uni-directional	Pins 1 & 2 closed	Pins 1 & 2 closed
Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed