bugfix for dirty pal

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@547 be3aeb3a-fb24-0410-a615-afba39da0efa

diff --git a/Pico/VideoPort.c b/Pico/VideoPort.c
index 3663732..6aabe88 100644 (file)
--- a/Pico/VideoPort.c
+++ b/Pico/VideoPort.c
@@ -390,26 +390,26 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
         // Register write:\r
         int num=(d>>8)&0x1f;\r
         int dold=pvid->reg[num];\r
-        int update_irq = 0, blank_on = 0;\r
+        int blank_on = 0;\r
         pvid->type=0; // register writes clear command (else no Sega logo in Golden Axe II)\r
         if (num > 0x0a && !(pvid->reg[1]&4)) {\r
           elprintf(EL_ANOMALY, "%02x written to reg %02x in SMS mode @ %06x", d, num, SekPc);\r
           return;\r
         }\r
 \r
+        if (num == 1 && !(d&0x40) && SekCyclesLeft > 390) blank_on = 1;\r
+        DrawSync(blank_on);\r
+        pvid->reg[num]=(unsigned char)d;\r
         switch (num)\r
         {\r
           case 0x00:\r
             elprintf(EL_INTSW, "hint_onoff: %i->%i [%i] pend=%i @ %06x", (dold&0x10)>>4,\r
                     (d&0x10)>>4, SekCyclesDone(), (pvid->pending_ints&0x10)>>4, SekPc);\r
-            update_irq = 1;\r
-            break;\r
+            goto update_irq;\r
           case 0x01:\r
             elprintf(EL_INTSW, "vint_onoff: %i->%i [%i] pend=%i @ %06x", (dold&0x20)>>5,\r
                     (d&0x20)>>5, SekCyclesDone(), (pvid->pending_ints&0x20)>>5, SekPc);\r
-            if (!(d&0x40) && SekCyclesLeft > 390) blank_on = 1;\r
-            update_irq = 1;\r
-            break;\r
+            goto update_irq;\r
           case 0x05:\r
             //elprintf(EL_STATUS, "spritep moved to %04x", (unsigned)(Pico.video.reg[5]&0x7f) << 9);\r
             if (d^dold) rendstatus |= PDRAW_SPRITES_MOVED;\r
@@ -419,10 +419,9 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
             if ((d^dold)&8) Pico.m.dirtyPal = 2;\r
             break;\r
         }\r
-        DrawSync(blank_on);\r
-        pvid->reg[num]=(unsigned char)d;\r
-        if (!update_irq) return;\r
+        return;\r
 \r
+update_irq:\r
 #ifndef EMU_CORE_DEBUG\r
         // update IRQ level\r
         if (!SekShouldInterrupt) // hack\r