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78 lines
1.5 KiB
C
78 lines
1.5 KiB
C
// This is part of Pico Library
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// (c) Copyright 2004 Dave, All rights reserved.
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// (c) Copyright 2006 notaz, All rights reserved.
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// Free for non-commercial use.
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// For commercial use, separate licencing terms must be obtained.
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#include "../PicoInt.h"
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int SekCycleCntS68k=0; // cycles done in this frame
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int SekCycleAimS68k=0; // cycle aim
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#ifdef EMU_M68K
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// ---------------------- MUSASHI 68000 ----------------------
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m68ki_cpu_core PicoS68kCPU; // Mega CD's CPU
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#endif
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#ifdef EMU_M68K
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int SekIntAckS68k(int level)
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{
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dprintf("s68kACK %i", level);
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CPU_INT_LEVEL = 0;
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return M68K_INT_ACK_AUTOVECTOR;
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}
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#endif
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int SekInitS68k()
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{
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#ifdef EMU_M68K
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{
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// Musashi is not very context friendly..
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void *oldcontext = m68ki_cpu_p;
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m68k_set_context(&PicoS68kCPU);
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m68k_set_cpu_type(M68K_CPU_TYPE_68000);
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m68k_init();
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m68k_set_int_ack_callback(SekIntAckS68k);
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// m68k_pulse_reset(); // not yet, memmap is not set up
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m68k_set_context(oldcontext);
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}
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#endif
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return 0;
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}
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// Reset the 68000:
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int SekResetS68k()
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{
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if (Pico.rom==NULL) return 1;
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#ifdef EMU_M68K
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{
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void *oldcontext = m68ki_cpu_p;
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m68k_set_context(&PicoS68kCPU);
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m68k_pulse_reset();
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m68k_set_context(oldcontext);
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}
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#endif
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return 0;
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}
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int SekInterruptS68k(int irq)
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{
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#ifdef EMU_M68K
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void *oldcontext = m68ki_cpu_p;
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m68k_set_context(&PicoS68kCPU);
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m68k_set_irq(irq); // raise irq (gets lowered after taken or must be done in ack)
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m68k_set_context(oldcontext);
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#endif
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return 0;
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}
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