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Author Topic: Can AmiMasterGear, etc run on A4000?  (Read 13282 times)

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Offline Piru

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Re: Can AmiMasterGear, etc run on A4000?
« on: March 24, 2007, 06:30:31 PM »
Quickly checking the source, there seems to be a bug when acking interrupts. intreq should be written twice, or the interrupt can be executed twice. With vertical blanking interrupt that'd mean double speed.

Code such as this:
Code: [Select]

   MOVE.W #$xxxx,$DFF09C
   NOP
   RTE

...should be:
Code: [Select]

  MOVE.W #$xxxx,$DFF09C
  MOVE.W #$xxxx,$DFF09C
  NOP
  RTE

No, I am not interested in fixing and building the app (the source is in m68k assembly, with spanish comments). Just something I spotted.