MODULAR CIRCUIT TECHNOLOGY

MCT-VIO+

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.