Crispy passed away August 8, 2022 and I thought I’d publish this unfinished article he was working on. When I began development on the MMDC I was focused solely on creating an implementation of the Atari 2600 game console using modern day electronic components. Because of this, I designed the circuit board with hardware features specific to the Atari 2600, and it wasn’t until well after I had it all working that I was inspired to develop cores for other platforms. The first problem I ran into when exploring the possibility of a C64 core was that of RAM. The Atari 2600 doesn’t have any system RAM to speak of. The RIOT chip has 128 bytes that are used for…
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