X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FPicoFrameHints.c;h=d1efa9ad12690997eb6903956d854852ac9cfa64;hb=583ab72c0b42549235191fd4fad239074dd896af;hp=ba76f6f86d8585912d5a2784784627d3483bee38;hpb=8ab3e3c1cf696cb776b14ab511f98aa8ab22797e;p=picodrive.git

diff --git a/Pico/PicoFrameHints.c b/Pico/PicoFrameHints.c
index ba76f6f..d1efa9a 100644
--- a/Pico/PicoFrameHints.c
+++ b/Pico/PicoFrameHints.c
@@ -1,3 +1,6 @@
+// common code for Pico.c and cd/Pico.c
+// (c) Copyright 2007,2008 Grazvydas "notaz" Ignotas
+
 #define CYCLES_M68K_LINE     488 // suitable for both PAL/NTSC
 #define CYCLES_M68K_VINT_LAG  68
 #define CYCLES_M68K_ASD      148
@@ -8,14 +11,14 @@
 
 // pad delay (for 6 button pads)
 #define PAD_DELAY \
-  if (PicoOpt&0x20) { \
+  if (PicoOpt&POPT_6BTN_PAD) { \
     if(Pico.m.padDelay[0]++ > 25) Pico.m.padTHPhase[0]=0; \
     if(Pico.m.padDelay[1]++ > 25) Pico.m.padTHPhase[1]=0; \
   }
 
 #define Z80_RUN(z80_cycles) \
 { \
-  if ((PicoOpt&4) && Pico.m.z80Run) \
+  if ((PicoOpt&POPT_EN_Z80) && Pico.m.z80Run) \
   { \
     int cnt; \
     if (Pico.m.z80Run & 2) z80CycleAim += z80_cycles; \
@@ -39,7 +42,7 @@
 #else
 #define CPUS_RUN(m68k_cycles,z80_cycles,s68k_cycles) \
 { \
-    if ((PicoOpt & 0x2000) && (Pico_mcd->m.busreq&3) == 1) { \
+    if ((PicoOpt&POPT_EN_MCD_PSYNC) && (Pico_mcd->m.busreq&3) == 1) { \
       SekRunPS(m68k_cycles, s68k_cycles); /* "better/perfect sync" */ \
     } else { \
       SekRunM68k(m68k_cycles); \
@@ -54,10 +57,20 @@
 static int PicoFrameHints(void)
 {
   struct PicoVideo *pv=&Pico.video;
-  int lines,y,lines_vis = 224,total_z80 = 0,z80CycleAim = 0,line_sample;
-  int skip=PicoSkipFrame || (PicoOpt&0x10);
+  int lines, y, lines_vis = 224, total_z80 = 0, z80CycleAim = 0, line_sample, skip;
   int hint; // Hint counter
 
+  if ((PicoOpt&POPT_ALT_RENDERER) && !PicoSkipFrame && (pv->reg[1]&0x40)) { // fast rend., display enabled
+    // draw a frame just after vblank in alternative render mode
+    // yes, this will cause 1 frame lag, but this is inaccurate mode anyway.
+    PicoFrameFull();
+#ifdef DRAW_FINISH_FUNC
+    DRAW_FINISH_FUNC();
+#endif
+    skip = 1;
+  }
+  else skip=PicoSkipFrame;
+
   if (Pico.m.pal) {
     //cycles_68k = (int) ((double) OSC_PAL  /  7 / 50 / 312 + 0.4); // should compile to a constant (488)
     //cycles_z80 = (int) ((double) OSC_PAL  / 15 / 50 / 312 + 0.4); // 228
@@ -112,21 +125,37 @@ static int PicoFrameHints(void)
     }
 
     // decide if we draw this line
+    if (!skip)
+    {
+      if (PicoOpt&POPT_ALT_RENDERER) {
+        // find the right moment for fast renderer, when display is no longer blanked
+        if ((pv->reg[1]&0x40) || y > 100) {
+          PicoFrameFull();
+#ifdef DRAW_FINISH_FUNC
+          DRAW_FINISH_FUNC();
+#endif
+          skip = 1;
+        }
+      }
+      else
+      {
 #if CAN_HANDLE_240_LINES
-    if(!skip && ((!(pv->reg[1]&8) && y<224) || (pv->reg[1]&8)) )
+        if (((!(pv->reg[1]&8) && y < 224) || (pv->reg[1]&8)) )
 #else
-    if(!skip && y<224)
+        if (y < 224)
 #endif
-      PicoLine(y);
+          PicoLine(y);
+      }
+    }
 
-    if(PicoOpt&1)
-      sound_timers_and_dac(y);
+    if (PicoOpt&POPT_EN_FM)
+      Psnd_timers_and_dac(y);
 
 #ifndef PICO_CD
     // get samples from sound chips
-    if(y == 32 && PsndOut)
+    if (y == 32 && PsndOut)
       emustatus &= ~1;
-    else if((y == 224 || y == line_sample) && PsndOut)
+    else if ((y == 224 || y == line_sample) && PsndOut)
       getSamples(y);
 #endif
 
@@ -136,11 +165,14 @@ static int PicoFrameHints(void)
 
 #ifdef PICO_CD
     update_chips();
+#else
+    if (PicoLineHook) PicoLineHook(1);
 #endif
   }
 
 #ifdef DRAW_FINISH_FUNC
-  DRAW_FINISH_FUNC();
+  if (!skip)
+    DRAW_FINISH_FUNC();
 #endif
 
   // V-int line (224 or 240)
@@ -177,11 +209,13 @@ static int PicoFrameHints(void)
     elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCycleCnt);
     SekInterrupt(6);
   }
-  if (Pico.m.z80Run && (PicoOpt&4))
+  if (Pico.m.z80Run && (PicoOpt&POPT_EN_Z80)) {
+    elprintf(EL_INTS, "zint");
     z80_int();
+  }
 
-  if (PicoOpt&1)
-    sound_timers_and_dac(y);
+  if (PicoOpt&POPT_EN_FM)
+    Psnd_timers_and_dac(y);
 
   // get samples from sound chips
 #ifndef PICO_CD
@@ -196,7 +230,9 @@ static int PicoFrameHints(void)
     CYCLES_Z80_LINE - CYCLES_Z80_ASD, CYCLES_S68K_LINE - CYCLES_S68K_ASD);
 
 #ifdef PICO_CD
-    update_chips();
+  update_chips();
+#else
+  if (PicoLineHook) PicoLineHook(1);
 #endif
 
   // PAL line count might actually be 313 according to Steve Snake, but that would complicate things.
@@ -211,8 +247,8 @@ static int PicoFrameHints(void)
     check_cd_dma();
 #endif
 
-    if(PicoOpt&1)
-      sound_timers_and_dac(y);
+    if (PicoOpt&POPT_EN_FM)
+      Psnd_timers_and_dac(y);
 
     // Run scanline:
     if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
@@ -220,13 +256,11 @@ static int PicoFrameHints(void)
 
 #ifdef PICO_CD
     update_chips();
+#else
+    if (PicoLineHook) PicoLineHook(1);
 #endif
   }
 
-  // draw a frame just after vblank in alternative render mode
-  if (!PicoSkipFrame && (PicoOpt&0x10))
-    PicoFrameFull();
-
   return 0;
 }