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DTC2278VL (900085-89A)
DATA TECHNOLOGY CORPORATION

DTC2278VL (900085-89A)


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
25-pin parallel port	J1
10-pin serial port 2	J2
10-pin serial port 1	J3
16-pin game port	J4
34-pin cable connector - floppy drive	J5
40-pin connector - IDE(AT) interface	J6
4-pin connector - drive active LED	J7

USER CONFIGURABLE SETTINGS
Function		Location	Setting
�	Game port enabled	W1	closed
	Game port disabled	W1	open
�	Parallel port is uni-directional	W2	closed
	Parallel port is bi-directional	W2	open
�	IDE(AT) interface interrupt IRQ14 select	W9	pins 1 & 2 closed
	IDE(AT) interface interrupt IRQ15 select	W9	pins 2 & 3 closed
�	Floppy drive interface enabled	W10	pins 2 & 3 closed
	Floppy drive interface disabled	W10	pins 1 & 2 closed
�	Floppy drive interface address 3F0-3F7h select	W11	pins 1 & 2 closed
	Floppy drive interface address 370-377h select	W11	pins 2 & 3 closed
�	IDE(AT) interface address 1F0-1F7, 3F6-3F7h select	W12	pins 1 & 2 closed
	IDE(AT) interface address 170-177, 376-377h select	W12	pins 2 & 3 closed
�	IDE(AT) interface enabled	W13	pins 2 & 3 closed
	IDE(AT) interface disabled	W13	pins 1 & 2 closed

PRIMARY SERIAL PORT ADDRESS SELECTION
COM		W7	W8
�	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

SECONDARY SERIAL PORT ADDRESS SELECTION
COM		W5	W6
�	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 ADDRESS SELECTION
LPT		W3	W4
�	LPT1 (378h)	pins 1 & 2 closed	pins 2 & 3 closed
	LPT2 (278h)	pind 2 & 3 closed	pins 1 & 2 closed
	LPT3 (3BCh)	pins 2 & 3 closed	pins 2 & 3 closed
	Disabled	pins 1 & 2 closed	pins 1 & 2 closed

IDE DATA TRANSFER RATE (FOR >33MHZ VL-BUS SYSTEMS)
Rate (MBps)	W14	W15	W16	W17	W18
3.3	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 2 & 3	pins 2 & 3
3.6	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 2 & 3
3.8	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 2 & 3
4.2	pins 2 & 3	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 2 & 3
4.5	pins 1 & 2	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 2 & 3
5.0	pins 2 & 3	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 2 & 3
5.6	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 2 & 3
6.3	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 2 & 3
7.2	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 2 & 3
Note: Pins designated are in the closed position. If the transfer rate of the drive you are using in your sytem does not exactly match one of the rates listed above, select the rate which is closest to but below the actual rate of the drive.

IDE DATA TRANSFER RATE (FOR <=33MHZ VL-BUS SYSTEMS)
Rate (MBps)		W14	W15	W16	W17	W18
�	3.9	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 2 & 3	pins 1 & 2
	3.3	pins 1 & 2	pins 2 & 3	pins 2 & 3	pins 2 & 3	pins 1 & 2
	3.5	pins 2 & 3	pins 1 & 2	pins 2 & 3	pins 2 & 3	pins 1 & 2
	3.7	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 2 & 3	pins 1 & 2
	4.2	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 2 & 3	pins 1 & 2
	4.4	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 1 & 2
	4.8	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 1 & 2
	5.1	pins 2 & 3	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 1 & 2
	5.6	pins 1 & 2	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 1 & 2
	6.1	pins 2 & 3	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 1 & 2
	6.7	pins 1 &2	pins 1 & 2	pins 2 & 3	pins 1 & 2	pins 1 & 2
	7.4	pins 2 & 3	pins 2 & 3	pins 1 & 2	pins 1 & 2	pins 1 & 2
	8.3	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 1 & 2
Note: Pins designated are in the closed position. If the transfer rate of the drive you are using in your sytem does not exactly match one of the rates listed above, select the rate which is closest to but below the actual rate of the drive.

PRIMARY SERIAL PORT INTERRUPT SELECTION
IRQ		W19	W20	W21
�	IRQ4	closed	open	open
	IRQ3	open	closed	open
	IRQ5	open	open	closed

SECONDARY SERIAL PORT INTERRUPT SELECTION
IRQ		W22	W23	W24
�	IRQ3	closed	open	open
	IRQ4	open	closed	open
	IRQ5	open	open	closed

PARALLEL PORT INERRUPT SELECTION
IRQ		W25	W26
�	IRQ7	closed	open
	IRQ5	open	closed