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MPEG-1 GENLOCK DECODER

OPTIVISION, INC.

MPEG-1 GENLOCK DECODER

Card Type

MPEG decoder

Video Chip Set

Unidentified

Maximum Playback Supported

720 x 480 (NTSC), 720 x 576 (PAL)

Highest Resolution Supported

Unidentified

Maximum Video Memory

None

Data Bus

16-bit ISA

Video Types Supported

XVGA

CONNECTIONS

Function

Label

Function

Label

S-video out

CN1

Composite video out

J2

Genlock

J1

Audio out

J3

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

 

000h

On

On

On

On

On

On

On

On

 

004h

Off

On

On

On

On

On

On

On

 

008h

On

Off

On

On

On

On

On

On

 

00Ch

Off

Off

On

On

On

On

On

On

 

010h

On

On

Off

On

On

On

On

On

»

208h

On

Off

On

On

On

On

On

Off

 

3ECh

Off

Off

On

Off

Off

Off

Off

Off

 

3F0h

On

On

Off

Off

Off

Off

Off

Off

 

3F4h

Off

On

Off

Off

Off

Off

Off

Off

 

3F8h

On

Off

Off

Off

Off

Off

Off

Off

 

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: SW1/8=512, SW1/7=256, SW1/6=128, SW1/5=64, SW1/4=32, SW1/3=16, SW1/2=8, SW1/1=4. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

INTERRUPT SELECTION

IRQ

J12

J13

J14

J15

J16

J17

 

2/9

Open

Open

Open

Open

Open

Closed

 

3

Open

Open

Open

Open

Open

Open

 

4

Open

Open

Open

Open

Open

Open

»

5

Open

Open

Open

Open

Open

Open

 

6

Open

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Closed

Open

 

11

Open

Open

Open

Closed

Open

Open

 

12

Open

Open

Closed

Open

Open

Open

 

14

Open

Closed

Open

Open

Open

Open

 

15

Closed

Open

Open

Open

Open

Open

INTERRUPT SELECTION (CON’T)

IRQ

J18

J19

J20

J21

J22

 

2/9

Open

Open

Open

Open

Open

 

3

Open

Open

Open

Open

Closed

 

4

Open

Open

Open

Closed

Open

»

5

Open

Open

Closed

Open

Open

 

6

Open

Closed

Open

Open

Open

 

7

Closed

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Open

 

11

Open

Open

Open

Open

Open

 

12

Open

Open

Open

Open

Open

 

14

Open

Open

Open

Open

Open

 

15

Open

Open

Open

Open

Open