diff options
Diffstat (limited to 'src-z80/core')
| -rw-r--r-- | src-z80/core/bgm.z80 | 18 | ||||
| -rw-r--r-- | src-z80/core/main.z80 | 1 | ||||
| -rw-r--r-- | src-z80/core/vars.z80 | 2 |
3 files changed, 19 insertions, 2 deletions
diff --git a/src-z80/core/bgm.z80 b/src-z80/core/bgm.z80 index cb8439a..ddb9f74 100644 --- a/src-z80/core/bgm.z80 +++ b/src-z80/core/bgm.z80 @@ -45,6 +45,14 @@ PlayBGM: ld hl, ProcessBGM ; Tell Echo to process BGM ld (DoTick_BGM+1), hl + ld b, 8 ; Force BGM volume of all FM channels to $00 + ld c, 0 ; (default value for older Echo versions) + ld hl, RAM_BGMFMVol +.playunmute: + ld (hl), c + inc l + djnz .playunmute + jp EndOfCommand ; End of subroutine ;**************************************************************************** @@ -311,7 +319,15 @@ StopBGM: ld (RAM_BGMPlaying), a ld hl, DoTick_BGMSkip ld (DoTick_BGM+1), hl - + + ld b, 8 ; Force BGM volume of all FM channels to $7F + ld c, $7F + ld hl, RAM_BGMFMVol +.stopmute: + ld (hl), c + inc l + djnz .stopmute + ret ; End of subroutine ;**************************************************************************** diff --git a/src-z80/core/main.z80 b/src-z80/core/main.z80 index 28758eb..383a0be 100644 --- a/src-z80/core/main.z80 +++ b/src-z80/core/main.z80 @@ -178,6 +178,7 @@ DoTick: ld (ix+0), $27 ; Retrigger the timer ld (ix+1), $2F +DoTick_Tick: PollPCM diff --git a/src-z80/core/vars.z80 b/src-z80/core/vars.z80 index 321d552..23b15b5 100644 --- a/src-z80/core/vars.z80 +++ b/src-z80/core/vars.z80 @@ -14,7 +14,7 @@ RAM_PSGData: ds 4*16 ; PSG envelope data ; ds 1 ... BGM channel volume RAM_BGMFMInstr: ds 8 ; FM instruments used by BGM -RAM_BGMFMVol: ds 8 ; FM volumes used by BGM +RAM_BGMFMVol: ds 8, $7F ; FM volumes used by BGM RAM_BGMFMPan: ds 8, $C0 ; FM panning used by BGM RAM_FMVol: ds 8 ; FM volume of each channel |