Subject: Re: [stella] behold, i am become shiva, destroyer of kernals! From: Christopher Tumber <christophertumber@xxxxxxxxxx> Date: Fri, 12 Mar 2004 11:48:12 -0500 |
Okay, enough Black Helicopter stuff, this is the REAL explanation. And this time I can prove it. PLP'ing an unknown value can result in munging the D flag. The skipdraw routines rely on SBC commands. So do other routines, and there were other problems for example the ball leaving the screen and never coming back. Having the D flag set will cause very different results in these operations. Sure enough, if I add a SED command just before the fixed missile skipdraw, the problem reappers. This is a problem on the Supercharger but not elsewhere because: PLP ;(ENAM1) Results in a different value than in the emulators (or Cuttle Cart 2 apparently). So the D flag does not get set in the emus/CC2 but does on the Supercharger. Chris... ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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