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diff --git a/Pico/PicoInt.h b/Pico/PicoInt.h
index a6fceff..9aead10 100644
--- a/Pico/PicoInt.h
+++ b/Pico/PicoInt.h
@@ -34,70 +34,78 @@ extern "C" {
 // ----------------------- 68000 CPU -----------------------
 #ifdef EMU_C68K
 #include "../cpu/Cyclone/Cyclone.h"
-extern struct Cyclone PicoCpu, PicoCpuS68k;
-#define SekCyclesLeftNoMCD PicoCpu.cycles // cycles left for this run
+extern struct Cyclone PicoCpuCM68k, PicoCpuCS68k;
+#define SekCyclesLeftNoMCD PicoCpuCM68k.cycles // cycles left for this run
 #define SekCyclesLeft \
 	(((PicoMCD&1) && (PicoOpt & 0x2000)) ? (SekCycleAim-SekCycleCnt) : SekCyclesLeftNoMCD)
 #define SekCyclesLeftS68k \
-	((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoCpuS68k.cycles)
-#define SekSetCyclesLeftNoMCD(c) PicoCpu.cycles=c
+	((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoCpuCS68k.cycles)
+#define SekSetCyclesLeftNoMCD(c) PicoCpuCM68k.cycles=c
 #define SekSetCyclesLeft(c) { \
 	if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCycleCnt=SekCycleAim-(c); else SekSetCyclesLeftNoMCD(c); \
 }
-#define SekPc (PicoCpu.pc-PicoCpu.membase)
-#define SekPcS68k (PicoCpuS68k.pc-PicoCpuS68k.membase)
-#define SekSetStop(x) { PicoCpu.state_flags&=~1; if (x) { PicoCpu.state_flags|=1; PicoCpu.cycles=0; } }
-#define SekSetStopS68k(x) { PicoCpuS68k.state_flags&=~1; if (x) { PicoCpuS68k.state_flags|=1; PicoCpuS68k.cycles=0; } }
+#define SekPc (PicoCpuCM68k.pc-PicoCpuCM68k.membase)
+#define SekPcS68k (PicoCpuCS68k.pc-PicoCpuCS68k.membase)
+#define SekSetStop(x) { PicoCpuCM68k.state_flags&=~1; if (x) { PicoCpuCM68k.state_flags|=1; PicoCpuCM68k.cycles=0; } }
+#define SekSetStopS68k(x) { PicoCpuCS68k.state_flags&=~1; if (x) { PicoCpuCS68k.state_flags|=1; PicoCpuCS68k.cycles=0; } }
+#define SekShouldInterrupt (PicoCpuCM68k.irq > (PicoCpuCM68k.srh&7))
+#ifdef EMU_M68K
+#define EMU_CORE_DEBUG
+#endif
 #endif
 
 #ifdef EMU_F68K
 #include "../cpu/fame/fame.h"
-M68K_CONTEXT PicoCpuM68k, PicoCpuS68k;
-#define SekCyclesLeftNoMCD PicoCpuM68k.io_cycle_counter
+M68K_CONTEXT PicoCpuFM68k, PicoCpuFS68k;
+#define SekCyclesLeftNoMCD PicoCpuFM68k.io_cycle_counter
 #define SekCyclesLeft \
 	(((PicoMCD&1) && (PicoOpt & 0x2000)) ? (SekCycleAim-SekCycleCnt) : SekCyclesLeftNoMCD)
 #define SekCyclesLeftS68k \
-	((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoCpuS68k.io_cycle_counter)
-#define SekSetCyclesLeftNoMCD(c) PicoCpuM68k.io_cycle_counter=c
+	((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoCpuFS68k.io_cycle_counter)
+#define SekSetCyclesLeftNoMCD(c) PicoCpuFM68k.io_cycle_counter=c
 #define SekSetCyclesLeft(c) { \
 	if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCycleCnt=SekCycleAim-(c); else SekSetCyclesLeftNoMCD(c); \
 }
-#define SekPc     m68k_get_pc(&PicoCpuM68k)
-#define SekPcS68k m68k_get_pc(&PicoCpuS68k)
+#define SekPc     fm68k_get_pc(&PicoCpuFM68k)
+#define SekPcS68k fm68k_get_pc(&PicoCpuFS68k)
 #define SekSetStop(x) { \
-	PicoCpuM68k.execinfo &= ~M68K_HALTED; \
-	if (x) { PicoCpuM68k.execinfo |= M68K_HALTED; PicoCpuM68k.io_cycle_counter = 0; } \
+	PicoCpuFM68k.execinfo &= ~FM68K_HALTED; \
+	if (x) { PicoCpuFM68k.execinfo |= FM68K_HALTED; PicoCpuFM68k.io_cycle_counter = 0; } \
 }
 #define SekSetStopS68k(x) { \
-	PicoCpuS68k.execinfo &= ~M68K_HALTED; \
-	if (x) { PicoCpuS68k.execinfo |= M68K_HALTED; PicoCpuS68k.io_cycle_counter = 0; } \
+	PicoCpuFS68k.execinfo &= ~FM68K_HALTED; \
+	if (x) { PicoCpuFS68k.execinfo |= FM68K_HALTED; PicoCpuFS68k.io_cycle_counter = 0; } \
 }
+#define SekShouldInterrupt fm68k_would_interrupt()
+#ifdef EMU_M68K
+#define EMU_CORE_DEBUG
+#endif
 #endif
 
 #ifdef EMU_M68K
 #include "../cpu/musashi/m68kcpu.h"
-extern m68ki_cpu_core PicoM68kCPU; // MD's CPU
-extern m68ki_cpu_core PicoS68kCPU; // Mega CD's CPU
+extern m68ki_cpu_core PicoCpuMM68k, PicoCpuMS68k;
 #ifndef SekCyclesLeft
-#define SekCyclesLeftNoMCD PicoM68kCPU.cyc_remaining_cycles
+#define SekCyclesLeftNoMCD PicoCpuMM68k.cyc_remaining_cycles
 #define SekCyclesLeft \
 	(((PicoMCD&1) && (PicoOpt & 0x2000)) ? (SekCycleAim-SekCycleCnt) : SekCyclesLeftNoMCD)
 #define SekCyclesLeftS68k \
-	((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoS68kCPU.cyc_remaining_cycles)
+	((PicoOpt & 0x2000) ? (SekCycleAimS68k-SekCycleCntS68k) : PicoCpuMS68k.cyc_remaining_cycles)
 #define SekSetCyclesLeftNoMCD(c) SET_CYCLES(c)
 #define SekSetCyclesLeft(c) { \
 	if ((PicoMCD&1) && (PicoOpt & 0x2000)) SekCycleCnt=SekCycleAim-(c); else SET_CYCLES(c); \
 }
-#define SekPc m68k_get_reg(&PicoM68kCPU, M68K_REG_PC)
-#define SekPcS68k m68k_get_reg(&PicoS68kCPU, M68K_REG_PC)
+#define SekPc m68k_get_reg(&PicoCpuMM68k, M68K_REG_PC)
+#define SekPcS68k m68k_get_reg(&PicoCpuMS68k, M68K_REG_PC)
 #define SekSetStop(x) { \
-	if(x) { SET_CYCLES(0); PicoM68kCPU.stopped=STOP_LEVEL_STOP; } \
-	else PicoM68kCPU.stopped=0; \
+	if(x) { SET_CYCLES(0); PicoCpuMM68k.stopped=STOP_LEVEL_STOP; } \
+	else PicoCpuMM68k.stopped=0; \
 }
 #define SekSetStopS68k(x) { \
-	if(x) { SET_CYCLES(0); PicoS68kCPU.stopped=STOP_LEVEL_STOP; } \
-	else PicoS68kCPU.stopped=0; \
+	if(x) { SET_CYCLES(0); PicoCpuMS68k.stopped=STOP_LEVEL_STOP; } \
+	else PicoCpuMS68k.stopped=0; \
 }
+#define SekShouldInterrupt (CPU_INT_LEVEL > FLAG_INT_MASK)
 #endif
 #endif
 
@@ -129,8 +137,7 @@ extern int SekCycleAimS68k;
 }
 #define SekCyclesDoneS68k()  (SekCycleAimS68k-SekCyclesLeftS68k)
 
-// debug cyclone
-#if defined(EMU_C68K) && defined(EMU_M68K)
+#ifdef EMU_CORE_DEBUG
 #undef SekSetCyclesLeftNoMCD
 #undef SekSetCyclesLeft
 #undef SekCyclesBurn
@@ -305,6 +312,9 @@ PICO_INTERNAL int PicoCdLoadState(void *file);
 // Cart.c
 PICO_INTERNAL void PicoCartDetect(void);
 
+// Debug.c
+int CM_compareRun(int cyc);
+
 // Draw.c
 PICO_INTERNAL int PicoLine(int scan);
 PICO_INTERNAL void PicoFrameStart(void);
@@ -314,14 +324,18 @@ PICO_INTERNAL void PicoFrameFull();
 
 // Memory.c
 PICO_INTERNAL int PicoInitPc(unsigned int pc);
-PICO_INTERNAL_ASM unsigned int CPU_CALL PicoRead32(unsigned int a);
+PICO_INTERNAL_ASM unsigned int PicoRead32(unsigned int a);
 PICO_INTERNAL void PicoMemSetup(void);
 PICO_INTERNAL_ASM void PicoMemReset(void);
 PICO_INTERNAL int PadRead(int i);
 PICO_INTERNAL unsigned char z80_read(unsigned short a);
-PICO_INTERNAL unsigned short z80_read16(unsigned short a);
+#ifndef _USE_CZ80
 PICO_INTERNAL_ASM void z80_write(unsigned char data, unsigned short a);
 PICO_INTERNAL void z80_write16(unsigned short data, unsigned short a);
+PICO_INTERNAL unsigned short z80_read16(unsigned short a);
+#else
+PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data);
+#endif
 
 // cd/Memory.c
 PICO_INTERNAL void PicoMemSetupCD(void);
@@ -345,7 +359,7 @@ PICO_INTERNAL int PicoFrameMCD(void);
 PICO_INTERNAL int SekInit(void);
 PICO_INTERNAL int SekReset(void);
 PICO_INTERNAL int SekInterrupt(int irq);
-PICO_INTERNAL void SekState(unsigned char *data);
+PICO_INTERNAL void SekState(int *data);
 PICO_INTERNAL void SekSetRealTAS(int use_real);
 
 // cd/Sek.c
@@ -378,10 +392,10 @@ PICO_INTERNAL_ASM void wram_1M_to_2M(unsigned char *m);
 PICO_INTERNAL void PicoCDBufferRead(void *dest, int lba);
 
 // sound/sound.c
-PICO_INTERNAL void sound_reset(void);
-PICO_INTERNAL void sound_timers_and_dac(int raster);
-PICO_INTERNAL int  sound_render(int offset, int length);
-PICO_INTERNAL void sound_clear(void);
+PICO_INTERNAL void PsndReset(void);
+PICO_INTERNAL void Psnd_timers_and_dac(int raster);
+PICO_INTERNAL int  PsndRender(int offset, int length);
+PICO_INTERNAL void PsndClear(void);
 // z80 functionality wrappers
 PICO_INTERNAL void z80_init(void);
 PICO_INTERNAL void z80_resetCycles(void);