some support for vdp debug reg

[picodrive.git] / pico / 32x / 32x.c

diff --git a/pico/32x/32x.c b/pico/32x/32x.c
index 54250f1..51817c0 100644 (file)
--- a/pico/32x/32x.c
+++ b/pico/32x/32x.c
@@ -109,6 +109,10 @@ void Pico32xStartup(void)
   p32x_pwm_ctl_changed();
   p32x_timers_recalc();
 
+  Pico32x.sh2_regs[0] = P32XS2_ADEN;
+  if (Pico.m.ncart_in)
+    Pico32x.sh2_regs[0] |= P32XS_nCART;
+
   if (!Pico.m.pal)
     Pico32x.vdp_regs[0] |= P32XV_nPAL;
 
@@ -130,28 +134,31 @@ void p32x_reset_sh2s(void)
   // if we don't have BIOS set, perform it's work here.
   // MSH2
   if (p32x_bios_m == NULL) {
-    unsigned int idl_src, idl_dst, idl_size; // initial data load
-    unsigned int vbr;
+    sh2_set_gbr(0, 0x20004000);
 
-    // initial data
-    idl_src = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d4)) & ~0xf0000000;
-    idl_dst = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d8)) & ~0xf0000000;
-    idl_size= HWSWAP(*(unsigned int *)(Pico.rom + 0x3dc));
-    if (idl_size > Pico.romsize || idl_src + idl_size > Pico.romsize ||
-        idl_size > 0x40000 || idl_dst + idl_size > 0x40000 || (idl_src & 3) || (idl_dst & 3)) {
-      elprintf(EL_STATUS|EL_ANOMALY, "32x: invalid initial data ptrs: %06x -> %06x, %06x",
-        idl_src, idl_dst, idl_size);
-    }
-    else
-      memcpy(Pico32xMem->sdram + idl_dst, Pico.rom + idl_src, idl_size);
+    if (!(PicoAHW & PAHW_MCD)) {
+      unsigned int idl_src, idl_dst, idl_size; // initial data load
+      unsigned int vbr;
+
+      // initial data
+      idl_src = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d4)) & ~0xf0000000;
+      idl_dst = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d8)) & ~0xf0000000;
+      idl_size= HWSWAP(*(unsigned int *)(Pico.rom + 0x3dc));
+      if (idl_size > Pico.romsize || idl_src + idl_size > Pico.romsize ||
+          idl_size > 0x40000 || idl_dst + idl_size > 0x40000 || (idl_src & 3) || (idl_dst & 3)) {
+        elprintf(EL_STATUS|EL_ANOMALY, "32x: invalid initial data ptrs: %06x -> %06x, %06x",
+          idl_src, idl_dst, idl_size);
+      }
+      else
+        memcpy(Pico32xMem->sdram + idl_dst, Pico.rom + idl_src, idl_size);
 
-    // GBR/VBR
-    vbr = HWSWAP(*(unsigned int *)(Pico.rom + 0x3e8));
-    sh2_set_gbr(0, 0x20004000);
-    sh2_set_vbr(0, vbr);
+      // VBR
+      vbr = HWSWAP(*(unsigned int *)(Pico.rom + 0x3e8));
+      sh2_set_vbr(0, vbr);
 
-    // checksum and M_OK
-    Pico32x.regs[0x28 / 2] = *(unsigned short *)(Pico.rom + 0x18e);
+      // checksum and M_OK
+      Pico32x.regs[0x28 / 2] = *(unsigned short *)(Pico.rom + 0x18e);
+    }
     // program will set M_OK
   }
 
@@ -183,7 +190,6 @@ void PicoPower32x(void)
 
   Pico32x.regs[0] = P32XS_REN|P32XS_nRES; // verified
   Pico32x.vdp_regs[0x0a/2] = P32XV_VBLK|P32XV_PEN;
-  Pico32x.sh2_regs[0] = P32XS2_ADEN;
 }
 
 void PicoUnload32x(void)
@@ -200,7 +206,6 @@ void PicoUnload32x(void)
 void PicoReset32x(void)
 {
   if (PicoAHW & PAHW_32X) {
-    msh2.m68krcycles_done = ssh2.m68krcycles_done = SekCyclesDone();
     p32x_trigger_irq(NULL, SekCyclesDone(), P32XI_VRES);
     p32x_sh2_poll_event(&msh2, SH2_IDLE_STATES, 0);
     p32x_sh2_poll_event(&ssh2, SH2_IDLE_STATES, 0);
@@ -225,7 +230,7 @@ static void p32x_start_blank(void)
     // XXX: no proper handling of 32col mode..
     if ((Pico32x.vdp_regs[0] & P32XV_Mx) != 0 && // 32x not blanking
         (Pico.video.reg[12] & 1) && // 40col mode
-        (PicoDrawMask & PDRAW_32X_ON))
+        (!(Pico.video.debug_p & PVD_KILL_32X)))
     {
       int md_bg = Pico.video.reg[7] & 0x3f;
 
@@ -371,7 +376,7 @@ static inline void run_sh2(SH2 *sh2, int m68k_cycles)
   elprintf_sh2(sh2, EL_32X, "+run %u %d @%08x",
     sh2->m68krcycles_done, cycles, sh2->pc);
 
-  done = sh2_execute(sh2, cycles);
+  done = sh2_execute(sh2, cycles, PicoOpt & POPT_EN_DRC);
 
   sh2->m68krcycles_done += C_SH2_TO_M68K(*sh2, done);
   sh2->state &= ~SH2_STATE_RUN;
@@ -516,7 +521,11 @@ void sync_sh2s_lockstep(unsigned int m68k_target)
 }
 
 #define CPUS_RUN(m68k_cycles) do { \
-  SekRunM68k(m68k_cycles); \
+  if (PicoAHW & PAHW_MCD) \
+    pcd_run_cpus(m68k_cycles); \
+  else \
+    SekRunM68k(m68k_cycles); \
+  \
   if ((Pico32x.emu_flags & P32XF_Z80_32X_IO) && Pico.m.z80Run \
       && !Pico.m.z80_reset && (PicoOpt & POPT_EN_Z80)) \
     PicoSyncZ80(SekCyclesDone()); \
@@ -525,6 +534,7 @@ void sync_sh2s_lockstep(unsigned int m68k_target)
 } while (0)
 
 #define PICO_32X
+#define PICO_CD
 #include "../pico_cmn.c"
 
 void PicoFrame32x(void)
@@ -540,6 +550,9 @@ void PicoFrame32x(void)
   p32x_sh2_poll_event(&msh2, SH2_STATE_VPOLL, 0);
   p32x_sh2_poll_event(&ssh2, SH2_STATE_VPOLL, 0);
 
+  if (PicoAHW & PAHW_MCD)
+    pcd_prepare_frame();
+
   PicoFrameStart();
   PicoFrameHints();
   sh2_drc_frame();