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c0pperdragon / C64-Video-Enhancement

Component video modification for the C64 8-bit computer
MIT License
250 stars 36 forks source link

Suggestion: HDMI output #20

Closed kasbert closed 4 years ago

kasbert commented 4 years ago

What would it take to add HDMI output to the board ?

c0pperdragon commented 4 years ago

I thought on HDMI for quite some time already, but it is really a huge effort. The only sensible output format would be 1080p, and this is beyond the capabilities of cheaper FPGAs to produce directly. So an HDMI transmitter chip is needed. And for some reasons, these chips are incredibly difficult to source and for the few that are available, documentation is either non-existent or restricted to commercial partners. But maybe I can learn something from the OSSC project in this regard.

Also audio would become an issue, as HDMI is no fun without it. So an audio ADC needs to be added (maybe could be done by the FPGA itself, but it is still quite difficult).

Considering the additional electronics needed, I may just be able to provide an HDMI-version of the board, but it may be more expensive. The need to cut a larger hole into the case for a connector is probably also not to everyone's liking.