Random Color Problem

[codyr783]

I'm trying to set the color to green, but instead I get a random color every time I play the .bin. I want to use Color_Grass as the color. This is my first go at this so help would be appreciated.

 

 processor 6502
 include "vcs.h"
 include "macro.h"
 SEG
 ORG $F000
Color_Grass = #$D5

Reset
StartOfFrame  ;vertical blank processing
  lda #0
  sta VBLANK
  lda #2
  sta VSYNC
sta WSYNC ;VSYNCH
			sta WSYNC
sta WSYNC
		lda #0
		sta VSYNC		  
;VBLANK
REPEAT 37
			sta WSYNC
REPEND
		  
Picture:  ldx #$05
 REPEAT 170
stx COLUBK
			sta WSYNC
			REPEND
ldx Color_Grass
REPEAT 22
stx COLUBK
sta WSYNC
REPEND
 
 
		lda #%01000010
		sta VBLANK					 ; end of screen - enter blanking
REPEAT 30  ;overscan(30)
			sta WSYNC
			REPEND

		jmp StartOfFrame
;TitleScreen  lda #0
 
		ORG $FFFA
		.word Reset		  ; NMI
		.word Reset		  ; RESET
		.word Reset		  ; IRQ
	END

Edited February 16, 2012 by codyr783

[RevEng]

short story: you're using memory location $D5 for the grass color, not the value $D5.

 

"Color_Grass = #$D5" doesn't cause a substitution of "#$D5" for every occurance of "Color_Grass". It literally puts the value $D5 into Color_Grass. The # is ignored.

 

To do what you want, lose the hash when you set Color_Grass and then add a hash when you actually use it, like " ldx #Color_Grass"

[codyr783]

Okay, I understand now. I appreciate the help.

[RevEng]

Not a problem!