fast mode timing changed (again...)

[picodrive.git] / Pico / sound / sound.c

diff --git a/Pico/sound/sound.c b/Pico/sound/sound.c
index 6a45033..8bec0ba 100644 (file)
--- a/Pico/sound/sound.c
+++ b/Pico/sound/sound.c
@@ -106,9 +106,7 @@ PICO_INTERNAL void sound_reset(void)
   // also clear the internal registers+addr line\r
   ym2612_regs = YM2612GetRegs();\r
   memset(ym2612_regs, 0, 0x200+4);\r
-  // setting these to 0 might confuse timing code,\r
-  // so better set to something like this instead\r
-  z80startCycle = z80stopCycle = 0x01000000;\r
+  z80startCycle = z80stopCycle = 0;\r
 \r
   sound_rerate(0);\r
 }\r
@@ -117,7 +115,7 @@ PICO_INTERNAL void sound_reset(void)
 // to be called after changing sound rate or chips\r
 void sound_rerate(int preserve_state)\r
 {\r
-  unsigned int state[28];\r
+  void *state = NULL;\r
   int target_fps = Pico.m.pal ? 50 : 60;\r
 \r
   // not all rates are supported in MCD mode due to mp3 decoder limitations\r
@@ -127,12 +125,16 @@ void sound_rerate(int preserve_state)
   }\r
 \r
   if (preserve_state) {\r
+    state = malloc(0x200);\r
+    if (state == NULL) return;\r
+    memcpy(state, YM2612GetRegs(), 0x200);\r
     if ((PicoMCD & 1) && Pico_mcd->m.audio_track)\r
       Pico_mcd->m.audio_offset = mp3_get_offset();\r
   }\r
   YM2612Init(Pico.m.pal ? OSC_PAL/7 : OSC_NTSC/7, PsndRate);\r
   if (preserve_state) {\r
     // feed it back it's own registers, just like after loading state\r
+    memcpy(YM2612GetRegs(), state, 0x200);\r
     YM2612PicoStateLoad();\r
     if ((PicoMCD & 1) && Pico_mcd->m.audio_track)\r
       mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);\r
@@ -142,6 +144,9 @@ void sound_rerate(int preserve_state)
   SN76496_init(Pico.m.pal ? OSC_PAL/15 : OSC_NTSC/15, PsndRate);\r
   if (preserve_state) memcpy(sn76496_regs, state, 28*4); // restore old state\r
 \r
+  if (state)\r
+    free(state);\r
+\r
   // calculate PsndLen\r
   PsndLen=PsndRate / target_fps;\r
   PsndLen_exc_add=((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
@@ -255,7 +260,8 @@ PICO_INTERNAL int sound_render(int offset, int length)
   }\r
 \r
   // CD: CDDA audio\r
-  if ((PicoMCD & 1) && (PicoOpt & 0x800))\r
+  // CD mode, cdda enabled, not data track, CDC is reading\r
+  if ((PicoMCD & 1) && (PicoOpt & 0x800) && !(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))\r
     mp3_update(buf32, length, stereo);\r
 \r
   // convert + limit to normal 16bit output\r
@@ -310,11 +316,13 @@ static unsigned int DrZ80_rebaseSP(unsigned short a)
 \r
 static unsigned char DrZ80_in(unsigned short p)\r
 {\r
+  elprintf(EL_ANOMALY, "Z80 port %04x read", p);\r
   return 0xff;\r
 }\r
 \r
 static void DrZ80_out(unsigned short p,unsigned char d)\r
 {\r
+  elprintf(EL_ANOMALY, "Z80 port %04x write %02x", p, d);\r
 }\r
 \r
 static void DrZ80_irq_callback()\r
@@ -455,7 +463,7 @@ PICO_INTERNAL void z80_exit(void)
 #endif\r
 }\r
 \r
-#if defined(__DEBUG_PRINT) || defined(__GP2X__)\r
+#if defined(__DEBUG_PRINT) || defined(__GP2X__) || defined(__GIZ__)\r
 PICO_INTERNAL void z80_debug(char *dstr)\r
 {\r
 #if defined(_USE_DRZ80)\r