Am Donnerstag, 27. August 2020, 13:32:56 CEST schrieb Hans Liss: > Odd code. It seems to have some magic I/O at $8000/$8001, with $8001 > maybe producing side effects on read. > > Also, the sequence starting at $e7a0 is kinda epic. It laboriously > stores code, instruction by instruction, at $0400 - $041b, and then > jumps to $0400. I wonder why. that would be the typical thing to do if you eg want to bank out the ROM you are running from, to call code from another ROM (bank), or from RAM $400x seems to be I/O to me as well... there really must be more to this, ie without the schematics or knowledge of the hardware it doesnt make a lot of sense -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net If you can't beat them, join them. Family time can include playing a video game. <Dr. Ken Haller, Saint Louis University School of Medicine>Received on 2020-08-27 14:03:43
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