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INTERFACE CARD

MITSUMI ELECTRONICS

INTERFACE CARD

Card Type

CD-ROM interface card

Chip Set

Unidentified

Maximum Onboard Memory

None

I/O Options

Audio in, audio (2), CD-ROM interface connector

Data Bus

16-bit ISA

Floppy drives supported

None

CONNECTIONS

Function

Label

Function

Label

Audio in

CN1

Audio left channel

J1

CD-ROM interface connector

CN2

Audio right channel

J2

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

300h

Off

Off

On

On

On

On

On

On

 

304h

Off

Off

On

On

On

On

On

Off

 

308h

Off

Off

On

On

On

On

Off

On

 

30Ch

Off

Off

On

On

On

On

Off

Off

 

310h

Off

Off

On

On

On

Off

On

On

 

3ECh

Off

Off

Off

Off

Off

On

Off

Off

 

3F0h

Off

Off

Off

Off

Off

Off

On

On

 

3F4h

Off

Off

Off

Off

Off

Off

On

Off

 

3F8h

Off

Off

Off

Off

Off

Off

Off

On

 

3FCh

Off

Off

Off

Off

Off

Off

Off

Off

Note:A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16, SW1/7=8, and SW1/8=4. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

DMA CHANNEL SELECTION

Channel

JP1/A

JP1/B

JP1/C

5

Closed

Open

Open

 

6

Open

Closed

Open

 

7

Open

Open

Closed

INTERRUPT SELECTION

IRQ

JP2/A

JP2/B

JP2/C

JP2/D

JP2/E

 

2/9

Closed

Open

Open

Open

Open

 

3

Open

Closed

Open

Open

Open

 

5

Open

Open

Closed

Open

Open

10

Open

Open

Open

Closed

Open

 

11

Open

Open

Open

Open

Closed

MISCELLANEOUS TECHNICAL NOTE

Note: This interface card work in conjunction with the Mitsumi Internal CD-ROM drive (Ver.1.0).