X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fpico.c;h=302cc699215a78278e67a3902e3d3e097e34c515;hb=94d2199eb18a8d21e24fb2aab66c10ef6869704b;hp=08ba5106640dda2cd99486c3a9f547fb68e2dba9;hpb=1cfc5cc4ce06642b9bc45ca3b9d32793718e9455;p=picodrive.git

diff --git a/pico/pico.c b/pico/pico.c
index 08ba510..302cc69 100644
--- a/pico/pico.c
+++ b/pico/pico.c
@@ -40,8 +40,7 @@ void PicoInit(void)
 
   PicoInitMCD();
   PicoSVPInit();
-
-  SRam.data=0;
+  Pico32xInit();
 }
 
 // to be called once on emu exit
@@ -52,13 +51,12 @@ void PicoExit(void)
   PicoCartUnload();
   z80_exit();
 
-  if (SRam.data) free(SRam.data); SRam.data=0;
+  if (SRam.data)
+    free(SRam.data);
 }
 
 void PicoPower(void)
 {
-  unsigned char sram_reg=Pico.m.sram_reg; // must be preserved
-
   Pico.m.frame_count = 0;
 
   // clear all memory of the emulated machine
@@ -78,7 +76,9 @@ void PicoPower(void)
   if (PicoAHW & PAHW_MCD)
     PicoPowerMCD();
 
-  Pico.m.sram_reg=sram_reg;
+  if (!(PicoOpt & POPT_DIS_32X))
+    PicoPower32x();
+
   PicoReset();
 }
 
@@ -94,14 +94,16 @@ PICO_INTERNAL void PicoDetectRegion(void)
   else
   {
     // Read cartridge region data:
-    int region=PicoRead32(0x1f0);
+    unsigned short *rd = (unsigned short *)(Pico.rom + 0x1f0);
+    int region = (rd[0] << 16) | rd[1];
 
-    for (i=0;i<4;i++)
+    for (i = 0; i < 4; i++)
     {
-      int c=0;
+      int c;
 
-      c=region>>(i<<3); c&=0xff;
-      if (c<=' ') continue;
+      c = region >> (i<<3);
+      c &= 0xff;
+      if (c <= ' ') continue;
 
            if (c=='J')  support|=1;
       else if (c=='U')  support|=4;
@@ -139,16 +141,22 @@ PICO_INTERNAL void PicoDetectRegion(void)
 
 int PicoReset(void)
 {
-  unsigned char sram_reg=Pico.m.sram_reg; // must be preserved
-
-  if (Pico.romsize<=0) return 1;
+  if (Pico.romsize <= 0)
+    return 1;
 
   /* must call now, so that banking is reset, and correct vectors get fetched */
-  if (PicoResetHook) PicoResetHook();
+  if (PicoResetHook)
+    PicoResetHook();
 
-  PicoMemReset();
-  SekReset();
   memset(&PicoPadInt,0,sizeof(PicoPadInt));
+  emustatus = 0;
+
+  if (PicoAHW & PAHW_SMS) {
+    PicoResetMS();
+    return 0;
+  }
+
+  SekReset();
   // s68k doesn't have the TAS quirk, so we just globally set normal TAS handler in MCD mode (used by Batman games).
   SekSetRealTAS(PicoAHW & PAHW_MCD);
   SekCycleCntT=0;
@@ -156,11 +164,11 @@ int PicoReset(void)
   if (PicoAHW & PAHW_MCD)
     // needed for MCD to reset properly, probably some bug hides behind this..
     memset(Pico.ioports,0,sizeof(Pico.ioports));
-  emustatus = 0;
 
   Pico.m.dirtyPal = 1;
 
   Pico.m.z80_bank68k = 0;
+  Pico.m.z80_reset = 1;
   memset(Pico.zram, 0, sizeof(Pico.zram)); // ??
 
   PicoDetectRegion();
@@ -169,7 +177,7 @@ int PicoReset(void)
   PsndReset(); // pal must be known here
 
   // create an empty "dma" to cause 68k exec start at random frame location
-  if (Pico.m.dma_xfers == 0 && !(PicoOpt&POPT_DIS_VDP_FIFO))
+  if (Pico.m.dma_xfers == 0 && !(PicoOpt & POPT_DIS_VDP_FIFO))
     Pico.m.dma_xfers = rand() & 0x1fff;
 
   SekFinishIdleDet();
@@ -183,12 +191,19 @@ int PicoReset(void)
   if (!(PicoOpt & POPT_DIS_IDLE_DET))
     SekInitIdleDet();
 
+  if (!(PicoOpt & POPT_DIS_32X)) {
+    PicoReset32x();
+    return 0;
+  }
+
   // reset sram state; enable sram access by default if it doesn't overlap with ROM
-  Pico.m.sram_reg=sram_reg&0x14;
-  if (!(Pico.m.sram_reg&4) && Pico.romsize <= SRam.start) Pico.m.sram_reg |= 1;
+  Pico.m.sram_reg = 0;
+  if ((SRam.flags & SRF_EEPROM) || Pico.romsize <= SRam.start)
+    Pico.m.sram_reg |= SRR_MAPPED;
 
-  elprintf(EL_STATUS, "sram: det: %i; eeprom: %i; start: %06x; end: %06x",
-    (Pico.m.sram_reg>>4)&1, (Pico.m.sram_reg>>2)&1, SRam.start, SRam.end);
+  if (SRam.flags & SRF_ENABLED)
+    elprintf(EL_STATUS, "sram: %06x - %06x; eeprom: %i", SRam.start, SRam.end,
+      !!(SRam.flags & SRF_EEPROM));
 
   return 0;
 }
@@ -258,35 +273,6 @@ static __inline void SekRunM68k(int cyc)
 #endif
 }
 
-
-// to be called on 224 or line_sample scanlines only
-static __inline void getSamples(int y)
-{
-#if SIMPLE_WRITE_SOUND
-  if (y != 224) return;
-  PsndRender(0, PsndLen);
-  if (PicoWriteSound) PicoWriteSound(PsndLen);
-  PsndClear();
-#else
-  static int curr_pos = 0;
-
-  if(y == 224) {
-    if(emustatus & 2)
-         curr_pos += PsndRender(curr_pos, PsndLen-PsndLen/2);
-    else curr_pos  = PsndRender(0, PsndLen);
-    if (emustatus&1) emustatus|=2; else emustatus&=~2;
-    if (PicoWriteSound) PicoWriteSound(curr_pos);
-    // clear sound buffer
-    PsndClear();
-  }
-  else if(emustatus & 3) {
-    emustatus|= 2;
-    emustatus&=~1;
-    curr_pos = PsndRender(0, PsndLen/2);
-  }
-#endif
-}
-
 #include "pico_cmn.c"
 
 int z80stopCycle;
@@ -314,23 +300,36 @@ void PicoFrame(void)
 {
   Pico.m.frame_count++;
 
+  if (PicoAHW & PAHW_SMS) {
+    PicoFrameMS();
+    return;
+  }
+
+  // TODO: MCD+32X
   if (PicoAHW & PAHW_MCD) {
     PicoFrameMCD();
     return;
   }
 
-  //if(Pico.video.reg[12]&0x2) Pico.video.status ^= 0x10; // change odd bit in interlace mode
+  if (PicoAHW & PAHW_32X) {
+    PicoFrame32x();
+    return;
+  }
 
-  if (!(PicoOpt&POPT_ALT_RENDERER))
-    PicoFrameStart();
+  //if(Pico.video.reg[12]&0x2) Pico.video.status ^= 0x10; // change odd bit in interlace mode
 
+  PicoFrameStart();
   PicoFrameHints();
 }
 
 void PicoFrameDrawOnly(void)
 {
-  PicoFrameStart();
-  PicoDrawSync(223, 0);
+  if (!(PicoAHW & PAHW_SMS)) {
+    PicoFrameStart();
+    PicoDrawSync(223, 0);
+  } else {
+    PicoFrameDrawOnlyMS();
+  }
 }
 
 void PicoGetInternal(pint_t which, pint_ret_t *r)