X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fpico.c;h=c63360c647f89b0de2df34972843d182edd37515;hb=04092e329bbd050073d42defcd609550d8545e74;hp=f900dfee3072e9cefce8b64bcbc333611f647a9b;hpb=3e49ffd0bf13f3a889cfb5196c2a61962dff6d0b;p=picodrive.git

diff --git a/pico/pico.c b/pico/pico.c
index f900dfe..c63360c 100644
--- a/pico/pico.c
+++ b/pico/pico.c
@@ -10,17 +10,18 @@
 #include "pico_int.h"
 #include "sound/ym2612.h"
 
-int PicoVer=0x0133;
 struct Pico Pico;
-int PicoOpt = 0;
-int PicoSkipFrame = 0; // skip rendering frame?
-int emustatus = 0;     // rapid_ym2612, multi_ym_updates
+int PicoOpt;     
+int PicoSkipFrame;     // skip rendering frame?
 int PicoPad[2];        // Joypads, format is MXYZ SACB RLDU
 int PicoPadInt[2];     // internal copy
-int PicoAHW = 0;       // active addon hardware: scd_active, 32x_active, svp_active, pico_active
-int PicoRegionOverride = 0; // override the region detection 0: Auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
-int PicoAutoRgnOrder = 0;
-struct PicoSRAM SRam = {0,};
+int PicoAHW;           // active addon hardware: PAHW_*
+int PicoRegionOverride; // override the region detection 0: Auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
+int PicoAutoRgnOrder;
+
+struct PicoSRAM SRam;
+int emustatus;         // rapid_ym2612, multi_ym_updates
+int scanlines_total;
 
 void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware
 void (*PicoResetHook)(void) = NULL;
@@ -40,8 +41,7 @@ void PicoInit(void)
 
   PicoInitMCD();
   PicoSVPInit();
-
-  SRam.data=0;
+  Pico32xInit();
 }
 
 // to be called once on emu exit
@@ -52,17 +52,16 @@ 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
-  memset(&Pico.ram,0,(unsigned int)&Pico.rom-(unsigned int)&Pico.ram);
+  memset(&Pico.ram,0,(unsigned char *)&Pico.rom - Pico.ram);
 
   memset(&Pico.video,0,sizeof(Pico.video));
   memset(&Pico.m,0,sizeof(Pico.m));
@@ -78,7 +77,9 @@ void PicoPower(void)
   if (PicoAHW & PAHW_MCD)
     PicoPowerMCD();
 
-  Pico.m.sram_reg=sram_reg;
+  if (PicoOpt & POPT_EN_32X)
+    PicoPower32x();
+
   PicoReset();
 }
 
@@ -94,14 +95,16 @@ 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 +142,22 @@ 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 +165,11 @@ 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 +178,7 @@ 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();
@@ -183,16 +192,37 @@ int PicoReset(void)
   if (!(PicoOpt & POPT_DIS_IDLE_DET))
     SekInitIdleDet();
 
+  if (PicoOpt & POPT_EN_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;
 }
 
+// flush cinfig changes before emu loop starts
+void PicoLoopPrepare(void)
+{
+  if (PicoRegionOverride)
+    // force setting possibly changed..
+    Pico.m.pal = (PicoRegionOverride == 2 || PicoRegionOverride == 8) ? 1 : 0;
+
+  // FIXME: PAL has 313 scanlines..
+  scanlines_total = Pico.m.pal ? 312 : 262;
+
+  if (PicoAHW & PAHW_32X)
+    p32x_timers_recalc();
+}
+
 
 // dma2vram settings are just hacks to unglitch Legend of Galahad (needs <= 104 to work)
 // same for Outrunners (92-121, when active is set to 24)
@@ -242,6 +272,8 @@ PICO_INTERNAL int CheckDMA(void)
 static __inline void SekRunM68k(int cyc)
 {
   int cyc_do;
+  pprof_start(m68k);
+
   SekCycleAim+=cyc;
   if ((cyc_do=SekCycleAim-SekCycleCnt) <= 0) return;
 #if defined(EMU_CORE_DEBUG)
@@ -256,6 +288,8 @@ static __inline void SekRunM68k(int cyc)
 #elif defined(EMU_F68K)
   SekCycleCnt+=fm68k_emulate(cyc_do+1, 0, 0);
 #endif
+
+  pprof_end(m68k);
 }
 
 #include "pico_cmn.c"
@@ -273,39 +307,57 @@ PICO_INTERNAL void PicoSyncZ80(int m68k_cycles_done)
   z80_cycle_aim = cycles_68k_to_z80(m68k_cycles_done);
   cnt = z80_cycle_aim - z80_cycle_cnt;
 
+  pprof_start(z80);
+
   elprintf(EL_BUSREQ, "z80 sync %i (%i|%i -> %i|%i)", cnt, z80_cycle_cnt, z80_cycle_cnt / 228,
     z80_cycle_aim, z80_cycle_aim / 228);
 
   if (cnt > 0)
     z80_cycle_cnt += z80_run(cnt);
+
+  pprof_end(z80);
 }
 
 
 void PicoFrame(void)
 {
+  pprof_start(frame);
+
   Pico.m.frame_count++;
 
+  if (PicoAHW & PAHW_SMS) {
+    PicoFrameMS();
+    goto end;
+  }
+
+  // TODO: MCD+32X
   if (PicoAHW & PAHW_MCD) {
     PicoFrameMCD();
-    return;
+    goto end;
   }
-  else if (PicoAHW & PAHW_SMS) {
-    PicoFrameMS();
-    return;
+
+  if (PicoAHW & PAHW_32X) {
+    PicoFrame32x();
+    goto end;
   }
 
   //if(Pico.video.reg[12]&0x2) Pico.video.status ^= 0x10; // change odd bit in interlace mode
 
-  if (!(PicoOpt&POPT_ALT_RENDERER))
-    PicoFrameStart();
-
+  PicoFrameStart();
   PicoFrameHints();
+
+end:
+  pprof_end(frame);
 }
 
 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)