Homemade video card

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Olli
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Homemade video card

Post by Olli »

If your video card got a problem, you can build your own graphic adapter like this man :
https://m.youtube.com/watch?v=l7rce6IQDWs
infratec
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Re: Homemade video card

Post by infratec »

I did already something similar, but instead of logic TTL ICs I used one small AVR 8 bit microcontroller. :wink:
Olli
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Re: Homemade video card

Post by Olli »

Interesting : the two questions which come to me with such a AVR microcontroller :

1) how had you synchronized the frequency ? It seems to be difficult : the TTL behaviour is very quick (15ns for the 40 years old technologies so 30ns to a RS memory cell. 30MHz allows to be accurate). Could the recent AVR can reach these I/O frequencies ?

2) which results you got ? Graphic screen ? (Which resolution?) Text screen ? Or free pattern?

It is interesting. Plus the author of the video seems not to have reached a video handling : just a fixed low-res picture.
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