mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-26 19:50:45 +00:00
718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
72 lines
2 KiB
C
72 lines
2 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 )
|