undocumented opcodes added to ncpu

[fceu.git] / ncpu_debug.c

diff --git a/ncpu_debug.c b/ncpu_debug.c
index 9736204..090bcb5 100644 (file)
--- a/ncpu_debug.c
+++ b/ncpu_debug.c
@@ -153,10 +153,6 @@ void TriggerNMI_d(void)
        compare_state();
 }
 
        compare_state();
 }
 

-void TriggerNMINSF_d(void)
-{
-}
-

 void X6502_Run_d(int32 c)
 {
        int32 cycles = c << 4; /* *16 */
 void X6502_Run_d(int32 c)
 {
        int32 cycles = c << 4; /* *16 */


@@ -186,6 +182,8 @@ void X6502_Run_d(int32 c)
                        pending_irq = 0;
                }
 
                        pending_irq = 0;
                }
 

+               //printf("%04x: %02x\n", nes_registers[3] - pc_base, *(unsigned char *)nes_registers[3]);
+

                nes_registers[7]=1<<16;
                X.count=1;
 
                nes_registers[7]=1<<16;
                X.count=1;
 


@@ -235,6 +233,38 @@ void X6502_Power_d(void)
        X6502_Power_c();
        X6502_Power_a();
        compare_state();
        X6502_Power_c();
        X6502_Power_a();
        compare_state();

+
+#if 0
+       {
+               unsigned char *p = (void *) nes_registers[3];
+               int i, u, nop = 0xea;
+
+               for (i = 0; i < 256; i++)
+               {
+                       if (i == 0 || i == 0x20 || i == 0x40 || i == 0x60 || i == 0x4c || i == 0x6c) continue; /* BRK, JSR, RET, etc. */
+                       if ((i & 0x1f) == 0x10) continue; /* Bxx */
+                       switch (i)
+                       {
+                               case 0x02: /* JAM */
+                               case 0x12:
+                               case 0x22:
+                               case 0x32:
+                               case 0x42:
+                               case 0x52:
+                               case 0x62:
+                               case 0x72:
+                               case 0x92:
+                               case 0xB2:
+                               case 0xD2:
+                               case 0xF2: continue;
+                       }
+
+                       *p++ = i;
+                       for (u = 0; u < 3; u++)
+                               *p++ = nop;
+               }
+       }
+#endif

 }
 
 void X6502_AddCycles_d(int x)
 }
 
 void X6502_AddCycles_d(int x)