DTC2278EB Hard Disk/Floppy Controller Settings and Configuration

Data bus:	32-bit VL-Bus
Size:	Three/quarter-length, half-height card
Hard drive supported:	Four IDE(AT) or EIDE 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	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
»	Game port enabled	W29	closed
	Game port disabled	W29	open
»	Floppy controller enabled	W30/pins 1 & 2	closed
	Floppy controller disabled	W30/pins 2 & 3	closed

BIOS ADDRESS SELECTION
Address		W7	W8	W24
»	C8000-CBFFFh	pins 2 & 3 closed	pins 2 & 3 closed	closed
	CC000-CFFFFh	pins 2 & 3 closed	pins 1 & 2 closed	closed
	D8000-DBFFFh	pins 1 & 2 closed	pins 2 & 3 closed	closed
	DC000-DFFFFh	pins 1 & 2 closed	pins 1 & 2 closed	closed
	Disabled	N/A	N/A	open

PARALLEL PORT ADDRESS SELECTION
LPT		W18	W19
»	LPT1 (378h)	pins 2 & 3 closed	pins 1 & 2 closed
	LPT2 (278h)	pins 1 & 2 closed	pins 1 & 2 closed
	LPT3 (3BCh)	pins 1 & 2 closed	pins 2 & 3 closed
	Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT 1 ADDRESS SELECTION
COM		W22	W23
»	COM1 (3F8h)	pins 1 & 2 closed	pins 1 & 2 closed
	COM2 (2F8h)	pins 1 & 2 closed	pins 2 & 3 closed
	COM3 (3E8h)	pins 2 & 3 closed	pins 1 & 2 closed
	Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT 2 ADDRESS SELECTION
COM		W20	W21
»	COM2 (2F8h)	pins 1 & 2 closed	pins 1 & 2 closed
	COM1 (3F8h)	pins 1 & 2 closed	pins 2 & 3 closed
	COM4 (2E8h)	pins 2 & 3 closed	pins 1 & 2 closed
	Disabled	pins 2 & 3 closed	pins 2 & 3 closed

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		W15	W16	W17
»	IRQ4	open	open	closed
	IRQ3	open	closed	open
	IRQ5	closed	open	open

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		W12	W13	W14
»	IRQ3	open	open	closed
	IRQ4	open	closed	open
	IRQ5	closed	open	open

PARALLEL PORT INTERRUPT SELECTION
IRQ		W10	W11
»	IRQ7	open	closed
	IRQ5	closed	open

PARALLEL PORT MODE CONFIGURATION
Mode	W9	W25	W31
Printer (uni-directional)	pins 2 & 3 closed	pins 2 & 3 closed	open
EPP & bi-directional	pins 1 & 2 closed	pins 2 & 3 closed	open
ECP & bi-directional	pins 2 & 3 closed	pins 1 & 2 closed	closed
EPP & ECP	pins 1 & 2 closed	pins 1 & 2 closed	closed
Note: You must select a DMA channel when using ECP mode.

DMA SELECTION
Channel	W1	W2	W3	W4
1	closed	open	closed	open
3	open	closed	open	closed