Subject: RE: [stella] Ms. Pac Man, Mr. Do, striped playfields, and one-line kernels From: "Dennis Debro" <dennis@xxxxxxxxxxxxxxx> Date: Thu, 2 Sep 2004 06:20:04 -0700 (PDT) |
Hi Lee, >> When using skipDraw, you will use Y for the scanline counter AND the >> graphics data and X for the PF-data. > > Actually, I should be able to keep it the other way around (y for PF data > and x for scanline) because the ball doesn't need to be (indirect),y > indexed, but my board color does. I would suggest changing it if you can for 2 reasons... 1) you set yourself up to use skipDraw which will eliminate the 250 zero ROM bytes 2) everytime you access ZP,y you're using an extra byte. In other words when it's compiled you get $xxxx,y instead of $xx,y Take care, Dennis
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