Subject: [stella] Phasor works now! (dum di dum :-) ) From: Chrissalo@xxxxxxx Date: Sat, 15 Mar 1997 23:20:33 -0500 (EST) |
Hi! Remember what I wrote about phasor producing illegal instructions via a loop that went to far and thus <poking> to a region that it wasn't supposed to poke to? Dennis Caswell, that's the programmers name, isn't it? He must have been quite a tricky guy, 'cause it seems he <deliberatly> ran that loop to far, so after reaching a negative value <ff, fe...> the poke (which was absolut X indexed) would cross a page boundary, and thus taking one cycle longer than those other poke's in that loop. Well that one cycle added made it 7 cycles after accessing the RAM area and thus a poke was not performed. At least that is what I gather, and it seems to work well :-) SOOOO.......... In order to poke <correctly> the poke address must follow the RAM access after 4,5 or 6 cycles, otherwise no poke is performed!!! The other games I mentioned still don't work 100%, but that <might> not be Starpath related... who knows, have to converse with Bradford about these... a quite happy... Chris -- Archives available at http://www.biglist.com/lists/stella/archives/ E-mail UNSUBSCRIBE in the body to stella-request@xxxxxxxxxxx to be removed.
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