Posted By
   candle on 2019-06-25 17:06:02
  |   debugging options
  Hi,
  Just stumbled on a situation when Metamerism demo doesn't run beyond title screen - it access drive and this is it, thus i wonder how i should proceed with this it runs on 8501 allright, but not my 6502plus4  i wondered if this is because of extended memory, so i've used vice to mimic this setup - no, it still goes with ram expanded what are my options right now? how should i proceed? are missing bits from cpu port preset to certain state? if so, how?
 
  [edit]
  ok, it seems that missing bit (5) should read 0, otherwise some fastloaders won't work....
 
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