Subject: Re: [stella] TomInv testing with Supercharger reveals anomaly From: "Eckhard Stolberg" <Eckhard_Stolberg@xxxxxx> Date: Thu, 9 Aug 2001 18:48:54 +0200 |
> Since I have no change to test things on real hardware (I do everything with z26), I did send some code to Eckhard. > > He told me about a problem with the positioning, and I thought I fixed it. Maybe the bug accidently came back. Someone should test this on a 2600. > If this is still the same program that you sent me, it should work correctly on my PAL VCS, but have problems on all emulators. IIRC you were postioning a set of sprites near the end of the scanline so that the next copy would just be spilled into the next scanline. During the horizontal blank you switch that player from close spacing to wide spacing, so that the copy in question shouldn't be displayed anymore. But since the VCS had decided on the end of the last scanline that the copy must be displayed, it would still do it anyway. If the 7800 has been changed in such a way that changing the spacing has an effect to that player copy, then the multisprite trick with hitting RESPx multiple times might get messed up a bit and the reported display problem might result from that. Ciao, Eckhard Stolberg - Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
Re: [stella] TomInv testing with Su, Thomas Jentzsch | Thread | [stella] Euchre: making a choice, Erik J. Eid |
Re: [stella] Game..., Dennis Debro | Date | Re: [stella] 7800 development, Eckhard Stolberg |
Month |