6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-12-23 04:30:10 +00:00
Code Issues Projects Releases Wiki Activity

Update sound driver

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@5974 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
karri 2013-01-28 17:42:18 +00:00
parent 8a7b84247c
commit 0137681d77
1 changed files with 123 additions and 120 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

243
libsrc/lynx/lynx-snd.s
View File

@ -1099,8 +1099,7 @@ set0: ldy SndOffsets,x
_IFPL
jmp set0
_ENDIF
rts
rts
_lynx_snd_play:
sta ptr1
@ -1109,136 +1108,140 @@ _lynx_snd_play:
tax
lda ptr1
ldy ptr1+1
php
pha
lda SndActive,x
_IFNE
dec SndReqStop,x
lda #1
sta SndDelay,x
start0: lda SndActive,x
bne start0
_ENDIF
bra start1
php
pha
lda SndActive,x
_IFNE
dec SndReqStop,x
lda #1
sta SndDelay,x
start0: lda SndActive,x
bne start0
_ENDIF
bra start1
SndStartSoundx:
php
pha
start1: sei
pla
sta SndPtrLo,x
tya
sta SndPtrHi,x
lda #1
sta SndDelay,x
stz SndEnvVol,x
stz SndEnvFrq,x
stz SndEnvWave,x
sta SndActive,x
stz SndReqStop,x
plp
rts
php
pha
start1:
sei
pla
sta SndPtrLo,x
tya
sta SndPtrHi,x
lda #1
sta SndDelay,x
stz SndEnvVol,x
stz SndEnvFrq,x
stz SndEnvWave,x
sta SndActive,x
stz SndReqStop,x
plp
rts
SndStartSound2:
pha
lda SndActive,x ; check default
beq start20 ; inactive => ok
phx
ldx #3 ; search free channel
start21: lda SndActive,x
beq start22 ; found =>
dex
bpl start21
plx ; not found
dec SndReqStop,x ; stop default-channel
lda #1
sta SndDelay,x
start23: lda SndActive,x
bne start23
bra start20
start22: pla ; clear stack
start20: pla
phx
jsr SndStartSoundx ; launch new sound
plx
rts
pha
lda SndActive,x ; check default
beq start20 ; inactive => ok
phx
ldx #3 ; search free channel
start21:
lda SndActive,x
beq start22 ; found =>
dex
bpl start21
plx ; not found
dec SndReqStop,x ; stop default-channel
lda #1
sta SndDelay,x
start23:
lda SndActive,x
bne start23
bra start20
start22:
pla ; clear stack
start20:
pla
phx
jsr SndStartSoundx ; launch new sound
plx
rts
_lynx_snd_stop:
ldx #3
lda SndActive,x
_IFNE
stop0: dec SndReqStop,x
lda #1
sta SndDelay,x
stop1: lda SndActive,x
bne stop1
_ENDIF
dex
bpl stop0
rts
ldx #3
lda SndActive,x
_IFNE
stop0: dec SndReqStop,x
lda #1
sta SndDelay,x
stop1: lda SndActive,x
bne stop1
_ENDIF
dex
bpl stop0
rts
SndStopChannel:
lda SndActive,x
_IFNE
dec SndReqStop,x
lda #1
sta SndDelay,x
stopc1: lda SndActive,x
bne stopc1
_ENDIF
rts
_lynx_snd_stop_channel:
lda SndActive,x
_IFNE
dec SndReqStop,x
lda #1
sta SndDelay,x
stopc1: lda SndActive,x
bne stopc1
_ENDIF
rts
SndChannelsActive:
ldx #3
lda #0
act0: ldy SndActive,x
_IFNE
ora SndMask,x
_ENDIF
dex
bpl act0
rts
_lynx_snd_active:
ldx #3
lda #0
act0: ldy SndActive,x
_IFNE
ora SndMask,x
_ENDIF
dex
bpl act0
rts
_lynx_snd_pause:
php
sei
lda STIMCTLA
sta SndPauseOff1+1
stz STIMCTLA
lda MSTEREO
sta SndPauseOff2+1
lda #$ff
sta MSTEREO
lda #$18
trb AUD0CTLA
trb AUD1CTLA
trb AUD2CTLA
trb AUD3CTLA
plp
rts
_lynx_snd_pause: php
sei
lda STIMCTLA
sta SndPauseOff1+1
stz STIMCTLA
lda MSTEREO
sta SndPauseOff2+1
lda #$ff
sta MSTEREO
lda #$18
trb AUD0CTLA
trb AUD1CTLA
trb AUD2CTLA
trb AUD3CTLA
plp
rts
_lynx_snd_continue:
php
sei
SndPauseOff1:
lda #0 ; Selbsmodifizierter Code!!!
sta STIMCTLA
SndPauseOff2:
lda #0 ; Selbsmodifizierter Code!!!
sta MSTEREO
lda #$18
tsb AUD0CTLA
tsb AUD1CTLA
tsb AUD2CTLA
tsb AUD3CTLA
_lynx_snd_continue: php
sei
SndPauseOff1: lda #0 ; Selbsmodifizierter Code!!!
sta STIMCTLA
SndPauseOff2: lda #0 ; Selbsmodifizierter Code!!!
sta MSTEREO
plp
rts
lda #$18
tsb AUD0CTLA
tsb AUD1CTLA
tsb AUD2CTLA
tsb AUD3CTLA
.rodata
plp
rts
.rodata
SndMask: .byte 1,2,4,8
SndMask:
.byte 1,2,4,8
SndPrescaler:
.byte $00,$06,$06,$06,$06,$05,$05,$05,$05,$05,$05,$05,$04,$04,$04,$04