xmas2018: update with mute functionality

xmas_2018/hello.bas

@@ -1,5 +1,5 @@
    5  HOME
-  10  PRINT "VMW PRODUCTIONS 2018 CHRISTMAS DEMO V1.0"
+  10  PRINT "VMW PRODUCTIONS 2018 CHRISTMAS DEMO V1.1"
   20  PRINT
   30  PRINT "    ONLY 22 YEARS SINCE THE LAST ONE"
   40  PRINT:PRINT
@@ -8,4 +8,5 @@
   70  PRINT "* MUSIC:      F. MENDELSSOHN"
   80  PRINT "* WREATH PIC: KITTELENDAN"
   90  PRINT:PRINT "   TAKES 30 SECONDS TO LOAD FROM DISK"
- 100  PRINT  CHR$ (4)"BRUN XMAS2018"
+ 100  PRINT:PRINT "          PRESS M TO MUTE MUSIC"
+ 105  PRINT  CHR$ (4)"BRUN XMAS2018"

xmas_2018/merry.s

@@ -553,3 +553,36 @@ hgr_scroll_return:
 									; -1
 	rts								; 6
 
+
+
+
+
+mute_music:
+	sei
+	jsr	mockingboard_mute
+
+	lda	#$4c		; jmp
+	sta	mute_smc
+	lda	#<play_nothing
+	sta	mute_smc+1
+	lda	#>play_nothing
+	sta	mute_smc+2
+
+	rts
+
+play_nothing:
+	; do nothing for 1017-3-6 = 1008 cycles
+
+        ; Try X=1 Y=91 cycles=1002 R6
+
+	lda	$0
+	lda	$0
+
+	ldy	#91							; 2
+muloopA:ldx	#1							; 2
+muloopB:dex								; 2
+	bne	muloopB							; 2nt/3
+	dey								; 2
+	bne	muloopA							; 2nt/3
+
+	rts

xmas_2018/play_music.s

@@ -80,6 +80,7 @@ mnl07 = $BF00
 	;      = 1017
 play_music:
 
+mute_smc:
 	; self-modify the code
 	lda	MB_PATTERN	; 3
 	and	#$07		; 2

xmas_2018/wreath.s

@@ -339,11 +339,18 @@ wrloop2:dex								; 2
 	lda	KEYPRESS				; 4
 	bpl	wr_no_keypress				; 3
 							; -1
-	jmp	wreath_done				; 3
+	jmp	wreath_check_key			; 3
 wr_no_keypress:
 	jmp	wreath_display_loop			; 3
 
+wreath_check_key:
+	cmp	#'M'|$80
+	bne	wreath_done
+
+	jsr	mute_music
+
 wreath_done:
+
 	bit	KEYRESET	; clear keypress	; 4
 	rts						; 6
 

xmas_2018/xmas2018.s

@@ -11,9 +11,9 @@ xmas2018_start:
 	; Check for Apple II and patch
 	;===================
 
-	lda	$FBB3		; IIe and newer is $06
-	cmp	#6
-	beq	apple_iie
+;	lda	$FBB3		; IIe and newer is $06
+;	cmp	#6
+;	beq	apple_iie
 
 ;	lda	#$54		;
 ;	sta	ce_patch+1
@@ -163,23 +163,26 @@ forever:
 
 	jsr	merry
 
-	jsr	wait_until_keypress
+	; wait 5s before restarting
+
+	ldx	#20
+wait_at_merry:
+	lda	#255
+	jsr	WAIT
+	dex
+	bne	wait_at_merry
 
 	sei	; disable music interrupt
 	jsr	mockingboard_mute
 
-	; wait again before restarting
-
-	jsr	wait_until_keypress
-
 	jmp	reload_everything
 
 	;==================
 	; Game over
 	;==================
 	; we never get here
-game_over_man:
-	jmp	game_over_man
+;game_over_man:
+;	jmp	game_over_man
 
 
 ; Things included here should be aligned