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// Game_Music_Emu 0.5.2. http://www.slack.net/~ant/
#include "hes_emu.h"
#include "blargg_endian.h"
//#include "hes_cpu_log.h"
/* Copyright (C) 2003-2006 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details. You should have received a copy of the GNU Lesser General Public
License along with this module; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include "blargg_source.h"
#define PAGE HES_CPU_PAGE
int read_mem( struct Hes_Emu* this, hes_addr_t addr )
{
check( addr < 0x10000 );
int result = *Cpu_get_code( &this->cpu, addr );
if ( this->cpu.mmr [PAGE( addr )] == 0xFF )
result = read_mem_( this, addr );
return result;
}
void write_mem( struct Hes_Emu* this, hes_addr_t addr, int data )
{
check( addr < 0x10000 );
byte* out = this->write_pages [PAGE( addr )];
if ( out )
out [addr & (page_size - 1)] = data;
else if ( this->cpu.mmr [PAGE( addr )] == 0xFF )
write_mem_( this, addr, data );
}
void set_mmr( struct Hes_Emu* this, int page, int bank )
{
this->write_pages [page] = 0;
byte* data = Rom_at_addr( &this->rom, bank * page_size );
if ( bank >= 0x80 )
{
data = 0;
switch ( bank )
{
case 0xF8:
data = this->ram;
break;
case 0xF9:
case 0xFA:
case 0xFB:
data = &this->sgx [(bank - 0xF9) * page_size];
break;
default:
/* if ( bank != 0xFF )
dprintf( "Unmapped bank $%02X\n", bank ); */
data = this->rom.unmapped;
goto end;
}
this->write_pages [page] = data;
}
end:
Cpu_set_mmr( &this->cpu, page, bank, data );
}
#define READ_FAST( addr, out ) \
{\
out = READ_CODE( addr );\
if ( cpu->mmr [PAGE( addr )] == 0xFF )\
{\
FLUSH_TIME();\
out = read_mem_( this, addr );\
CACHE_TIME();\
}\
}
#define WRITE_FAST( addr, data ) \
{\
int page = PAGE( addr );\
byte* out = this->write_pages [page];\
addr &= page_size - 1;\
if ( out )\
{\
out [addr] = data;\
}\
else if ( cpu->mmr [page] == 0xFF )\
{\
FLUSH_TIME();\
write_mem_( this, addr, data );\
CACHE_TIME();\
}\
}
#define READ_LOW( addr ) (this->ram [addr])
#define WRITE_LOW( addr, data ) (this->ram [addr] = data)
#define READ_MEM( addr ) read_mem( this, addr )
#define WRITE_MEM( addr, data ) write_mem( this, addr, data )
#define WRITE_VDP( addr, data ) write_vdp( this, addr, data )
#define CPU_DONE( result_out ) { FLUSH_TIME(); result_out = cpu_done( this ); CACHE_TIME(); }
#define SET_MMR( reg, bank ) set_mmr( this, reg, bank )
#define IDLE_ADDR idle_addr
#define CPU_BEGIN \
bool run_cpu( struct Hes_Emu* this, hes_time_t end_time )\
{\
struct Hes_Cpu* cpu = &this->cpu;\
Cpu_set_end_time( cpu, end_time );
#include "hes_cpu_run.h"
return illegal_encountered;
}
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