Michael Doornbos
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My first ever VIC-20 arrived. It seem salvageable, black screen, and you can't beat $25US... I don't own a dead test for a 20 so working on it old school. It was after I desoldered the horrible socket on UE11 that I realized I'm apparently out of 24 pin sockets. #commodore

▸ May 3, 2021 ▸ Michael Doornbos ▸ 0 words

← Late lunch 10 minute progress: Next up is Pontifex from Cryptonomicon. Occurred to me while planning that I better do some card routines first so I don't bite off too much at once. So create a deck and shuffle (requires two different jokers to work) is done. #commodore #c64 Implementing ChaCha… I need 4 eight bit ROLs, but the 6502 is really a 9 bit ROL. I don’t know why it didn’t occur to me to just to a CMP #$80 until now to set the carry before the rotate. Problem solved. →
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