73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
|
|
||
|
|
#include "Gbs_Emu.h"
|
||
|
|
|
||
|
|
#include "blargg_source.h"
|
||
|
|
|
||
|
|
int Gbs_Emu::cpu_read( gb_addr_t addr )
|
||
|
|
{
|
||
|
|
int result = *cpu::get_code( addr );
|
||
|
|
if ( unsigned (addr - Gb_Apu::start_addr) < Gb_Apu::register_count )
|
||
|
|
result = apu.read_register( clock(), addr );
|
||
|
|
#ifndef NDEBUG
|
||
|
|
else if ( unsigned (addr - 0x8000) < 0x2000 || unsigned (addr - 0xE000) < 0x1F00 )
|
||
|
|
debug_printf( "Read from unmapped memory $%.4x\n", (unsigned) addr );
|
||
|
|
else if ( unsigned (addr - 0xFF01) < 0xFF80 - 0xFF01 )
|
||
|
|
debug_printf( "Unhandled I/O read 0x%4X\n", (unsigned) addr );
|
||
|
|
#endif
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Gbs_Emu::cpu_write( gb_addr_t addr, int data )
|
||
|
|
{
|
||
|
|
unsigned offset = addr - ram_addr;
|
||
|
|
if ( offset <= 0xFFFF - ram_addr )
|
||
|
|
{
|
||
|
|
ram [offset] = data;
|
||
|
|
if ( (addr ^ 0xE000) <= 0x1F80 - 1 )
|
||
|
|
{
|
||
|
|
if ( unsigned (addr - Gb_Apu::start_addr) < Gb_Apu::register_count )
|
||
|
|
{
|
||
|
|
GME_APU_HOOK( this, addr - Gb_Apu::start_addr, data );
|
||
|
|
apu.write_register( clock(), addr, data );
|
||
|
|
}
|
||
|
|
else if ( (addr ^ 0xFF06) < 2 )
|
||
|
|
update_timer();
|
||
|
|
else if ( addr == joypad_addr )
|
||
|
|
ram [offset] = 0; // keep joypad return value 0
|
||
|
|
else
|
||
|
|
ram [offset] = 0xFF;
|
||
|
|
|
||
|
|
//if ( addr == 0xFFFF )
|
||
|
|
// debug_printf( "Wrote interrupt mask\n" );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if ( (addr ^ 0x2000) <= 0x2000 - 1 )
|
||
|
|
{
|
||
|
|
set_bank( data );
|
||
|
|
}
|
||
|
|
#ifndef NDEBUG
|
||
|
|
else if ( unsigned (addr - 0x8000) < 0x2000 || unsigned (addr - 0xE000) < 0x1F00 )
|
||
|
|
{
|
||
|
|
debug_printf( "Wrote to unmapped memory $%.4x\n", (unsigned) addr );
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CPU_READ_FAST( cpu, addr, time, out ) \
|
||
|
|
CPU_READ_FAST_( STATIC_CAST(Gbs_Emu*,cpu), addr, time, out )
|
||
|
|
|
||
|
|
#define CPU_READ_FAST_( emu, addr, time, out ) \
|
||
|
|
{\
|
||
|
|
out = READ_PROG( addr );\
|
||
|
|
if ( unsigned (addr - Gb_Apu::start_addr) < Gb_Apu::register_count )\
|
||
|
|
out = emu->apu.read_register( emu->cpu_time - time * clocks_per_instr, addr );\
|
||
|
|
else\
|
||
|
|
check( out == emu->cpu_read( addr ) );\
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CPU_READ( cpu, addr, time ) \
|
||
|
|
STATIC_CAST(Gbs_Emu*,cpu)->cpu_read( addr )
|
||
|
|
|
||
|
|
#define CPU_WRITE( cpu, addr, data, time ) \
|
||
|
|
STATIC_CAST(Gbs_Emu*,cpu)->cpu_write( addr, data )
|