[stella] Revolutionary Horizontal position discovered!

[Manuel Polik <cybergoth@xxxxxxxx>]

Hi there, fellow ASM wizards!

Check out this magic treasure and sing halleluja! :-)

Found in Battlezone:

LD7E0: CMP    #$11    ;2
       BCS    LD7EA   ;2
       SBC    #$04    ;2
       BCS    LD7EA   ;2
       ADC    #$A5    ;2
LD7EA: STA    WSYNC   ;3
       STA    HMOVE   ;3

LD7EE: SBC    #$0F    ;2 
       BCS    LD7EE   ;2 ->5 cycles per iteration!

       EOR    #$07    ;2
       ASL            ;2
       ASL            ;2
       ASL            ;2
       ASL            ;2
       TAY            ;2
       STA    RESP0,X ;4
       STA    WSYNC   ;3
       STA    HMOVE   ;3
       RTS            ;6

What do you think?

Greetings,
	Manuel

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