mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-21 23:30:58 +00:00
175 lines
3.2 KiB
Plaintext
175 lines
3.2 KiB
Plaintext
EVENT__start = 1
|
|
EVENT__postframe = 1
|
|
EVENT__preframe = 1
|
|
EVENT__playsound = 1
|
|
EVENT__preframeloop = 1
|
|
.scope SoundDemo
|
|
.zeropage
|
|
SoundChannel_sfx_b0:
|
|
.res 1
|
|
.res 1
|
|
SoundChannel_timer_b0:
|
|
.res 1
|
|
.res 1
|
|
TEMP:
|
|
SoundEngine__2__tmp:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.code
|
|
SoundEffect_duration_b0:
|
|
.byte 11
|
|
SoundEffect_sounddata_b0:
|
|
.byte <SoundEffect_sounddata_e0_b0
|
|
SoundEffect_sounddata_b8:
|
|
.byte >SoundEffect_sounddata_e0_b0
|
|
SoundEffect_sounddata_e0_b0:
|
|
.byte 2
|
|
.byte 3
|
|
.byte 4
|
|
.byte 8
|
|
.byte 16
|
|
.byte 32
|
|
.byte 16
|
|
.byte 32
|
|
.byte 16
|
|
.byte 8
|
|
.byte 168
|
|
SoundDemo__INITDATA:
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
__Start:
|
|
|
|
;;; start action Init__main_init__1
|
|
|
|
.include "vcs-ca65.h"
|
|
.macpack longbranch
|
|
.define PAL 0
|
|
.segment "STARTUP"
|
|
__NMI:
|
|
__Reset:
|
|
__BRK:
|
|
CLEAN_START
|
|
|
|
ldy #4
|
|
: lda SoundDemo__INITDATA-1,y
|
|
sta SoundChannel_sfx_b0-1,y
|
|
dey
|
|
bne :-
|
|
|
|
;;; start action FrameLoop__start__3
|
|
|
|
|
|
;;; start action Test__preframeloop__5
|
|
|
|
|
|
;;; start action SoundEngine__playsound__7
|
|
|
|
; arg 0 = sound channel
|
|
ldy #0
|
|
; arg 1 = sound effect #
|
|
lda #0
|
|
sta SoundChannel_sfx_b0,y
|
|
tax
|
|
|
|
;;; end action SoundEngine__playsound__7
|
|
|
|
;;; start action SoundEngine__playsound__10
|
|
|
|
lda SoundEffect_duration_b0,x
|
|
|
|
;;; end action SoundEngine__playsound__10
|
|
|
|
;;; start action SoundEngine__playsound__13
|
|
|
|
sta SoundChannel_timer_b0,y
|
|
; arg 2 = base volume
|
|
lda #15
|
|
sta AUDV0,y
|
|
|
|
;;; end action SoundEngine__playsound__13
|
|
|
|
|
|
;;; end action Test__preframeloop__5
|
|
|
|
FrameLoop__start__4__NextFrame:
|
|
FRAME_END
|
|
|
|
FRAME_START
|
|
|
|
;;; start action SoundEngine__preframe__16
|
|
|
|
ldy #0
|
|
SoundEngine__preframe__17____each:
|
|
ldx SoundChannel_sfx_b0,y
|
|
|
|
lda SoundChannel_timer_b0,y
|
|
jeq SoundEngine__preframe__18__nosound
|
|
sec
|
|
sbc #1
|
|
sta SoundChannel_timer_b0,y
|
|
pha
|
|
lda SoundEffect_sounddata_b0,x
|
|
sta SoundEngine__2__tmp+0
|
|
lda SoundEffect_sounddata_b8,x
|
|
sta SoundEngine__2__tmp+1 ; save pointer to sound data
|
|
sty SoundEngine__2__tmp+2 ; save Y (sound channel #)
|
|
pla
|
|
tay
|
|
lda (SoundEngine__2__tmp+0),y ; get sound data
|
|
bpl SoundEngine__preframe__18__setfreq ; hi bit clear = just freq
|
|
ldy SoundEngine__2__tmp+2
|
|
lsr ; right shift (/ 2)
|
|
bcs SoundEngine__preframe__18__setvol ; lo bit set = volume
|
|
sta AUDC0,y ; lo bit clear = control
|
|
lsr ; also set freq (/ 2)
|
|
SoundEngine__preframe__18__setfreq:
|
|
ldy SoundEngine__2__tmp+2
|
|
sta AUDF0,y ; set frequency
|
|
jmp SoundEngine__preframe__18__done
|
|
SoundEngine__preframe__18__nosound:
|
|
lda #0
|
|
SoundEngine__preframe__18__setvol:
|
|
sta AUDV0,y ; set volume
|
|
SoundEngine__preframe__18__done:
|
|
|
|
iny
|
|
cpy #2
|
|
jne SoundEngine__preframe__17____each
|
|
SoundEngine__preframe__17____exit:
|
|
|
|
;;; end action SoundEngine__preframe__16
|
|
|
|
|
|
KERNEL_START
|
|
|
|
KERNEL_END
|
|
|
|
|
|
;;; start action FrameLoop__postframe__19
|
|
|
|
lsr SWCHB ; test Game Reset switch
|
|
bcs FrameLoop__postframe__20__NoStart
|
|
|
|
FrameLoop__postframe__20__NoStart:
|
|
|
|
;;; end action FrameLoop__postframe__19
|
|
|
|
jmp FrameLoop__start__4__NextFrame ; loop to next frame
|
|
|
|
;;; end action FrameLoop__start__3
|
|
; start main routine
|
|
.segment "VECTORS"
|
|
ZeroByte: .byte $00
|
|
Return: .byte $60
|
|
VecNMI:
|
|
VecReset: .word __Reset
|
|
VecBRK: .word __BRK
|
|
.code
|
|
|
|
;;; end action Init__main_init__1
|
|
|
|
.endscope
|
|
SoundDemo__Start = SoundDemo::__Start |