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help with assembler

Open drarem opened this issue 1 year ago • 1 comments

Trying to do this, figuring the poke is slightly faster than the sound statement. It doesn't do anything, tried various ways. The endians might be reversed or am loading the accumulator wrong. Supposed to at least hear the first note playing at volume of 12 when it runs.

.data AUDCTL1 53760 .data AUDVOL1 53761

LDA #str STA AUDCTL LDA #$172 STA AUDVOL1 RTS

**** SOURCE *** DATA str() B. = 243,213,200,192,158,96 DATA AUDCTL1() B. = 0,210 DATA AUDVOL1() B. = 1,210

AUDCTL = 53760 AUDVOL = 53761 X = ADR(str) ? X, X+6 DATA ad() B. = $AD,str,$8D,AUDCTL1,$A9,172,$8D,AUDVOL1,$60

drarem avatar May 17 '24 10:05 drarem

Nevermind, this can be closed. I can't really play the music in a loop and have any other interaction unless the music is built into the loop. But I was able to test it neatly in WUDSN:

        org $2000	;Start of code block

AUDACTL1 = $D200
AUDVOL1 =  $D201

start	lda #243		;Disable screen DMA
	
	sta $D200
	lda #172
	sta $D201
	
	
stop	jmp stop

drarem avatar May 17 '24 17:05 drarem