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LDA-MAC II videocard

Elv1s

Active member
Just bought this videocard, 1987 sigma design. It slipped my mind to check the port at the time of purchase. Now I got it today and it has a DE-9 port, for EGA and CGA. Problem is that I dont have that kind of crt screen at hand. Is there a way to convert the signal to use with a regular apple display (crt) or to VGA?
 

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Phipli

Well-known member
Just bought this videocard, 1987 sigma design. It slipped my mind to check the port at the time of purchase. Now I got it today and it has a DE-9 port, for EGA and CGA. Problem is that I dont have that kind of crt screen at hand. Is there a way to convert the signal to use with a regular apple display (crt) or to VGA?
Not easily. It likely isn't EGA or CGA. Sigma did their own thing.

It's also probably ECL signals, which is tricky to convert to VGA.
 

cheesestraws

Well-known member
It could well be a specific one: around this time, cards and monitors were often sold as a bundle if they did anything unusual at all.

You'd have to look at what's actually being put out by the card etc to get some ideas.
 
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