dos33fsprogs/bgmusic/bgmusic.s

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; Play music in the background
; by deater (Vince Weaver) <vince@deater.net>
; Zero Page
.include "zp.inc"
.include "hardware.inc"
;PT3_USE_ZERO_PAGE=0
;===================
; PT3 Setup
lda #0
sta DONE_PLAYING
lda #1
sta LOOP
jsr mockingboard_detect
bcc mockingboard_not_found
setup_interrupt:
jsr mockingboard_init
jsr mockingboard_setup_interrupt
jsr reset_ay_both
jsr clear_ay_both
jsr pt3_init_song
start_interrupts:
cli
mockingboard_not_found:
;===================
; init screen
jsr TEXT
jsr HOME
bit KEYRESET
; GR part
; bit PAGE1
; bit LORES ; 4
; bit SET_GR ; 4
; bit FULLGR ; 4
;===================
; init vars
; lda #0
; sta DRAW_PAGE
; lda #4
; sta DISP_PAGE
;=============================
; Load desire 1st
; lda #<desire_rle
; sta GBASL
; lda #>desire_rle
; sta GBASH
; lda #$c
; jsr load_rle_gr
; jsr gr_copy_to_current ; copy to page1
; jsr page_flip
; jsr wait_until_keypress
done:
jmp $3D0
wait_until_keypress:
lda KEYPRESS
bpl wait_until_keypress
bit KEYRESET
rts
; .include "gr_unrle.s"
; .include "gr_unrle_large.s"
; .include "gr_offsets.s"
; .include "gr_copy.s"
; .include "gr_copy_large.s"
; .include "gr_pageflip.s"
.include "pt3_lib_core.s"
.include "pt3_lib_init.s"
.include "pt3_lib_mockingboard_setup.s"
.include "interrupt_handler.s"
; if you're self patching, detect has to be after interrupt_handler.s
.include "pt3_lib_mockingboard_detect.s"
.include "nozp.inc"
PT3_LOC = song
.align $100
song:
.incbin "../pt3_player/music/DF.PT3"