Am Montag, 13. Januar 2020, 20:55:50 CET schrieb Michiel Boland: > Hi. Not sure if this has been mentioned already, but there is a bug in the > VIC-II chip where it will simultaneously shift a sprite shift register and > attempt to load it with a new value at the same time, for the duration of > one pixel. This introduces some interesting phase-of-the-moon bugs in > combination with multi-color mode. At least, that what I think is going on. > > https://youtu.be/BN8LQz7aBLg > > As an aside, there appears to be some work here and there of people who have > reverse-engineered, or have tried to reverse engineer the VIC-II chip based > off of die shots. But there does not appear to be anything definitive > online (a la visual6502), or it was once there but has since disappeared. > Or maybe I am looking in the wrong places. What is there to be found > regarding this? (So I don't have to reinvent the wheel. :) i think the most work was done by tlr and nojoopa when x64sc was implemented. i dont think any details from die-shot reversing where posted anywhere. (i am not aware of any such work either... except for one guy (androsid) on the german forum64 - he seems to be working on it, but didnt post any details yet either) -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net I do not believe in a personal God and I have never denied this but have expressed it clearly. <Albert Einstein>Received on 2020-05-30 00:16:43
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