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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@2 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz 2006-12-19 20:53:21 +00:00
parent 2cadbd5e56
commit cc68a136aa
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Pico/cd/Sek.c Normal file
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// This is part of Pico Library
// (c) Copyright 2004 Dave, All rights reserved.
// (c) Copyright 2006 notaz, All rights reserved.
// Free for non-commercial use.
// For commercial use, separate licencing terms must be obtained.
#include "../PicoInt.h"
int SekCycleCntS68k=0; // cycles done in this frame
int SekCycleAimS68k=0; // cycle aim
#ifdef EMU_M68K
// ---------------------- MUSASHI 68000 ----------------------
m68ki_cpu_core PicoS68kCPU; // Mega CD's CPU
#endif
#ifdef EMU_M68K
int SekIntAckS68k(int level)
{
dprintf("s68k: int %i ack [%i|%i]", level, Pico.m.scanline, SekCyclesDone());
CPU_INT_LEVEL = 0;
return M68K_INT_ACK_AUTOVECTOR;
}
#endif
int SekInitS68k()
{
#ifdef EMU_M68K
{
// Musashi is not very context friendly..
void *oldcontext = m68ki_cpu_p;
m68k_set_context(&PicoS68kCPU);
m68k_set_cpu_type(M68K_CPU_TYPE_68000);
m68k_init();
m68k_set_int_ack_callback(SekIntAckS68k);
// m68k_pulse_reset(); // not yet, memmap is not set up
m68k_set_context(oldcontext);
}
#endif
return 0;
}
// Reset the 68000:
int SekResetS68k()
{
if (Pico.rom==NULL) return 1;
#ifdef EMU_M68K
{
void *oldcontext = m68ki_cpu_p;
m68k_set_context(&PicoS68kCPU);
m68k_pulse_reset();
m68k_set_context(oldcontext);
}
#endif
return 0;
}
int SekInterruptS68k(int irq)
{
#ifdef EMU_M68K
void *oldcontext = m68ki_cpu_p;
m68k_set_context(&PicoS68kCPU);
m68k_set_irq(irq); // raise irq (gets lowered after taken or must be done in ack)
m68k_set_context(oldcontext);
#endif
return 0;
}