MCT-VIO+ 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) drives
Floppy drives supported:	Four 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB drives

CONNECTIONS
Function	Location
34-pin control cable connector - primary floppy drive	CN1
25-pin parallel port - external	CN2
40-pin IDE(AT) Interface connector - primary drive	CN3
4-pin connector - primary IDE drive active LED	CN4
10-pin serial port 2 - internal	CN5
9-pin serial port 1 - external/10-pin serial port 1 internal	CN6
40-pin IDE (AT) Interface connector - secondary drive	CN7
4-pin connector - secondary drive active LED	CN8
34-pin control cable connector - secondary floppy drive	CN9
16-pin game port - internal	CN10

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	IOCHRDY signal disabled	J7	Open
	IOCHRDY signal enabled	J7	Closed
»	Floppy drive enable	J8	Pins 2 & 3 closed
	Floppy drive disable	J8	Pins 1 & 2 closed
»	Floppy drive normal compatible mode enabled	J16	Pins 2 & 3 closed
	Floppy drive enhanced mode enabled	J16	Pins 1 & 2 closed
»	IDE(AT) interface enabled	J17	Pins 2 & 3 closed
	IDE(AT) interface disabled	J17	Pins 1 & 2 closed
»	Floppy drive I/O address is 3F0h	J26	Pins 2 & 3 closed
	Floppy drive I/O address is 370h	J26	pins 1 & 2 closed
»	Game port enable	J37	Closed
	Game port disable	J37	Open

IDE CHANNEL AND ADDRESS CONFIGURATION
Setting		J18	J19
	Primary and secondary channels enabled	Pins 1 & 2 closed	Pins 2 & 3 closed
	Primary channel only enabled (170h)	Pins 2 & 3 closed	Pins 1 & 2 closed
»	Primary channel only enabled (1F0h)	Pins 2 & 3 closed	Pins 2 & 3 closed

IDE WAIT STATE FOR VL-BUS CLOCK
Setting		J20	J21	J22
»	General setting for all VL bus clocks	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
	<= 33 MHz VL bus clock	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
	> 33 MHz VL bus clock	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed

FLOPPY CHANNEL CONFIGURATION
Setting		J4	J5	J6
	Primary and secondary channels enabled	Closed	Closed	Closed
»	Primary channel enabled	Open	Open	Open
Note: The primary and secondary option is invalid with ECP mode.

PARALLEL PORT CONFIGURATION
LPT		J9	J27
»	LPT1 (378h)	Pins 2 & 3 closed	Pins 2 & 3 closed
	LPT2 (278h)	Pins 2 & 3 closed	Pins 1 & 2 closed
	LPT3 (3BCh)	Pins 1 & 2 closed	Pins 1 & 2 closed
	Disabled	Pins 1 & 2 closed	Pins 2 & 3 closed

SERIAL PORT 1 CONFIGURATION
COM		J10	J11
»	COM1 (3F8h)	Pins 2 & 3 closed	Pins 2 & 3 closed
	COM2 (2F8h)	Pins 2 & 3 closed	Pins 1 & 2 closed
	COM3 (3E8h)	Pins 1 & 2 closed	Pins 2 & 3 closed
	Disabled	Pins 1 & 2 closed	Pins 1 & 2 closed

SERIAL PORT 2 CONFIGURATION
COM		J12	J13
»	COM2 (2F8h)	Pins 2 & 3 closed	Pins 2 & 3 closed
	COM1 (3F8h)	Pins 1 & 2 closed	Pins 2 & 3 closed
	COM4 (2E8h)	Pins 2 & 3 closed	Pins 1 & 2 closed
	Disable	Pins 1 & 2 closed	Pins 1 & 2 closed

PARALLEL PORT MODE CONFIGURATION
Mode		J28	J29
»	Printer	Pins 2 & 3 closed	Pins 2 & 3 closed
	EPP & Printer	Pins 1 & 2 closed	Pins 2 & 3 closed
	ECP	Pins 2 & 3 closed	Pins 1 & 2 closed
	EPP & ECP	Pins 1 & 2 closed	Pins 1 & 2 closed

ECP DMA SELECTION
Channel	J38	J39	J40	J41	J42
DMA 1	Closed	Open	Open	Closed	Closed
DMA 3	Closed	Closed	Closed	Open	Open
Disabled	Open	Open	Open	Open	Open

SERIAL PORT INTERRUPT SELECTION
Serial Port 1		Serial Port 2	J32	J33	J34	J35
	No Interrupt	No Interrupt	Open	Open	Open	Open
	No Interrupt	IRQ 3	Open	Closed	Open	Open
	No Interrupt	IRQ 4	Open	J33/pin 1 to J34/pin 1	Open
	No Interrupt	IRQ 5	J32/pin 1 to J33/pin 1	Open	Open
	IRQ 3	No Interrupt	Open	J33/pin 2 to J34/pin 2	Open
»	IRQ3	IRQ 4	Open	J33/pin 1 to J34/pin 1 J33/pin 2 to J34/pin 2	Open
	IRQ3	IRQ5	J32/pin 1 to J33/pin1 J33/pin 2 to J34/pin 2	Open
	IRQ4	No Interrupt	Open	Open	Closed	Open
	IRQ4	IRQ3	Open	Closed	Closed	Open
	IRQ4	IRQ5	J32/pin 1 to J33/pin 1	Closed	Open
	IRQ5	No Interrupt	Open	Open	J34/pin 2 to J35/pin 2
	IRQ5	IRQ3	Open	Closed	J34/pin 2 to J35/pin 2
	IRQ5	IRQ4	Open	J33/pin 1 to J34/pin 1 J34/pin 2 to P35/pin 2

PARALLEL PORT INTERRUPT SELECTION
IRQ		J35	J36
	IRQ5	Closed	Open
»	IRQ7	Open	Closed
	No Interrupt	Open	Open

MISCELLANEOUS TECHNICAL NOTES

Jumper J35 serves multiple functions so it appears in both serial port and parallel port interrupt selection tables.