Apple-2-SW
/
dos33fsprogs
mirror of https://github.com/deater/dos33fsprogs.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

tiny_music: starting to optmize

This commit is contained in:
Vince Weaver 2021-11-03 00:53:52 -04:00
parent 7cde776cfa
commit f38c1ea6f8
3 changed files with 7 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
demos/tiny_music/mockingboard_setup.s
View File

@ -279,6 +279,10 @@ setup_irq_smc6:
init_registers:
lda #0
sta SONG_OFFSET
sta SONG_COUNTDOWN
; set fine note A
ldx #$00

13
demos/tiny_music/music.s
View File

@ -29,21 +29,12 @@ tiny_music:
;===================
; Player Setup
lda #0
sta DONE_PLAYING
lda #1
sta LOOP
lda #<song_track_a
lda #<yankee_doodle_song
sta SONG_L
lda #>song_track_a
lda #>yankee_doodle_song
sta SONG_H
lda #0
sta SONG_OFFSET
sta SONG_COUNTDOWN
; assume mockingboard in slot#4
jsr mockingboard_init

2
demos/tiny_music/yankee_music.s
View File

@ -5,7 +5,7 @@
; CCOONNNN -- c=channel, o=octave, n=note
; 11LLLLLL -- L=length 1/32=1, 1/16=2, 1/8=4, 1/4=8 1/2=16 1=32
song_track_a:
yankee_doodle_song:
.byte $17 ;00 01 0111 G3 1/4
.byte $4B ;01 00 1011 B2 1
.byte $87 ;10 00 0111 G2 1