Subject: Re: [stella] Revolutionary Horizontal positioning 2 From: Manuel Polik <cybergoth@xxxxxxxx> Date: Tue, 26 Nov 2002 15:48:55 +0100 |
Hi Thomas! >Manuel Polik wrote: >> AND #$0F ; Manuels "forget about EOR/ASL >> TAY ; nonsense" magic :-) >> LDA hmovetab,Y ; >> STA HMP1 ; Fine Position sprite 1 >>hmovetab >> .byte $80,$70,$60,$50,$40,$30,$20,$10,$00 >> .byte $F0,$E0,$D0,$C0,$B0,$A0,$90 > Good work Manuel! Thanks! *proud* :-) > Did you find this trick in other games too? I just finished programming this, so I had no time to further research that yet. But I don't really think you'll find this in other games, since normally the EOR/ASL thing should do - I just desperately needed the cycles gained from using the table and the reliable carry state. And I don't have Y as general line-counter, so I didn't need to worry about using it. (X would certainly do as well) Greetings, Manuel ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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