73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
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#include "hes_emu.h"
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#include "blargg_source.h"
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int Cpu_read( struct Hes_Emu* this, hes_addr_t addr )
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{
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check( addr <= 0xFFFF );
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int result = *Cpu_get_code( &this->cpu, addr );
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if ( this->cpu.mmr [addr >> page_shift] == 0xFF )
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result = Emu_cpu_read( this, addr );
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return result;
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}
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void Cpu_write( struct Hes_Emu* this, hes_addr_t addr, int data )
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{
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check( addr <= 0xFFFF );
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byte* out = this->write_pages [addr >> page_shift];
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addr &= page_size - 1;
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if ( out )
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out [addr] = data;
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else if ( this->cpu.mmr [addr >> page_shift] == 0xFF )
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Emu_cpu_write( this, addr, data );
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}
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#define CPU_READ_FAST( emu, addr, time, out ) \
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CPU_READ_FAST_( emu, addr, time, out )
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#define CPU_READ_FAST_( emu, addr, time, out ) \
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{\
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out = READ_PROG( addr );\
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if ( emu->cpu.mmr [addr >> page_shift] == 0xFF )\
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{\
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FLUSH_TIME();\
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out = Emu_cpu_read( emu, addr );\
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CACHE_TIME();\
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}\
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}
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#define CPU_WRITE_FAST( emu, addr, data, time ) \
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CPU_WRITE_FAST_( emu, addr, data, time )
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#define CPU_WRITE_FAST_( emu, addr, data, time ) \
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{\
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byte* out = emu->write_pages [addr >> page_shift];\
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addr &= page_size - 1;\
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if ( out )\
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{\
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out [addr] = data;\
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}\
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else if ( emu->cpu.mmr [addr >> page_shift] == 0xFF )\
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{\
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FLUSH_TIME();\
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Emu_cpu_write( emu, addr, data );\
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CACHE_TIME();\
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}\
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}
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#define CPU_READ( emu, addr, time ) \
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Cpu_read( emu, addr )
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#define CPU_WRITE( emu, addr, data, time ) \
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Cpu_write( emu, addr, data )
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#define CPU_WRITE_VDP( emu, addr, data, time ) \
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Cpu_write_vdp( emu, addr, data )
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#define CPU_SET_MMR( emu, page, bank ) \
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Emu_cpu_set_mmr( emu, page, bank )
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#define CPU_DONE( emu, time, result_out ) \
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result_out = Cpu_done( emu )
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