HSTX DVI rasterizer

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I’ve replaced PicoDVI library with custom HSTX code for DVI (HDMI) signal generation.

RP2350 chip has new, dedicated hardware for driving high speed, output-only data stream over GPIOs. Coupled with new, dedicated hardware TMDS encoder it can be used to generate DVI video.

This combination is so powerfull, that I was able to completely remove PicoDVI library and replace it with ~100 lines of very straightforward code. It supports horizontal and vertical pixel doubling and can easily push full 768x480 pixels in full 24bit RGB, with no sweat…

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Picocomputer 65816
RIA 8ff01c4+@main
CORE: 300.0MHz
DVI: 768x480@24bpp
RAM: 8MB
USB: 0 devices