void Nes_Core::close()
{
cart = NULL;
delete mapper;
mapper = NULL;
ppu.close_chr();
disable_rendering();
}
void Nes_Core::load_state( Nes_State_ const& in )
{
require( cart );
disable_rendering();
error_count = 0;
if ( in.nes_valid )
nes = in.nes;
// always use frame count
ppu.burst_phase = 0; // avoids shimmer when seeking to same time over and over
nes.frame_count = in.nes.frame_count;
if ( (frame_count_t) nes.frame_count == invalid_frame_count )
nes.frame_count = 0;
if ( in.cpu_valid )
cpu::r = *in.cpu;
if ( in.joypad_valid )
joypad = *in.joypad;
if ( in.apu_valid )
{
impl->apu.load_state( *in.apu );
// prevent apu from running extra at beginning of frame
impl->apu.end_frame( -(int) nes.timestamp / ppu_overclock );
}
else
{
impl->apu.reset();
}
ppu.load_state( in );
if ( in.ram_valid )
memcpy( cpu::low_mem, in.ram, in.ram_size );
sram_present = false;
if ( in.sram_size )
{
sram_present = true;
memcpy( impl->sram, in.sram, min( (int) in.sram_size, (int) sizeof impl->sram ) );
enable_sram( true ); // mapper can override (read-only, unmapped, etc.)
}
if ( in.mapper_valid ) // restore last since it might reconfigure things
mapper->load_state( *in.mapper );
}
void Nes_Core::close()
{
// check that nothing modified unmapped page
#ifndef NDEBUG
//if ( cart && mem_differs( impl->unmapped_page, unmapped_fill, sizeof impl->unmapped_page ) )
// dprintf( "Unmapped code page was written to\n" );
#endif
cart = NULL;
delete mapper;
mapper = NULL;
ppu.close_chr();
disable_rendering();
}
