DTC2280 (400485-89D) Hard Disk/Floppy Controller Settings and Configuration

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

CONNECTIONS
Function	Label	Function	Label
40-pin IDE(AT) interface connector	JP1	34-pin control cable connector - floppy drive	JP5
16-pin game port - internal	JP2	2-pin connector - drive active LED	JP8
9-pin serial port 1 - external	JP3	25-pin parallel port - external	JP15
10-pin serial port 2 - internal	JP4

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	AT bus IDE I/O Read path enabled	J1	Pins 2 & 3 closed
	W83758P IDE I/O Read path enabled	J1	Pins 1 & 2 closed
»	AT bus IDE I/O Write path enabled	J2	Pins 2 & 3 closed
	W83758P IDE I/O Write path enabled	J2	Pins 1 & 2 closed
»	Floppy drive order is normal (A:, B)	JP6/A	Pins 1 & 2 closed
	Floppy drive order is reversed (B:, A)	JP6/A	Pins 2 & 3 closed
»	Floppy drive interface address 3F0 - 3F7h	JP6/B	Pins 2 & 3 closed
	Floppy drive interface address 370 - 377h	JP6/B	Pins 1 & 2 closed
»	IDE(AT) interface enabled	JP6/C	Pins 1 & 2 closed
	IDE(AT) interface disabled	JP6/C	Pins 2 & 3 closed
»	IDE(AT) interface address 3F6, 3F7, 1F0 - 1F7h	JP6/D	Pins 2 & 3 closed
	IDE(AT) interface address 376, 377, 170 - 177h	JP6/D	Pins 1 & 2 closed
»	Floppy drive interface enabled	JP6/E	Pins 1 & 2 closed
	Floppy drive interface disabled	JP6/E	Pins 2 & 3 closed
»	Parallel port is bi-directional	JP11	Open
	Parallel port is unidirectional	JP11	Closed
»	Game port enabled	JP16	Closed
	Game port disabled	JP16	Open

SERIAL PORT 1 CONFIGURATION
Port 1		JP9/A	JP9/B
»	COM1	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM3	Pins 2 & 3 closed	Pins 1 & 2 closed
	COM4	Pins 1 & 2 closed	Pins 1 & 2 closed
	Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed

SERIAL PORT 2 CONFIGURATION
Port 1		JP9/C	JP9/D
»	COM2	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM3	Pins 1 & 2 closed	Pins 1 & 2 closed
	COM4	Pins 2 & 3 closed	Pins 1 & 2 closed
	Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed

PARALLEL PORT CONFIGURATION
LPT		JP9/E	JP9/F
»	1 (378h)	Pins 2 & 3 closed	Pins 1 & 2 closed
	2 (278h)	Pins 1 & 2 closed	Pins 2 & 3 closed
	3 (3BCh)	Pins 1 & 2 closed	Pins 1 & 2 closed
	Disabled	Pins 2 & 3 closed	Pins 2 & 3 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		JP12/A	JP12/B	JP12/C
»	IRQ4	Closed	Open	Open
	IRQ3	Open	Closed	Open
	IRQ5	Open	Open	Closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		JP12/D	JP12/E	JP12/F
»	IRQ3	Closed	Open	Open
	IRQ4	Open	Closed	Open
	IRQ5	Open	Open	Closed

PARALLEL PORT INTERRUPT SELECTION
IRQ		JP12/G	JP12/H
»	IRQ7	Closed	Open
	IRQ5	Open	Closed