1 files changed, 83 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-svn/gme/nes_cpu_io.h b/plugins/gme/game-music-emu-svn/gme/nes_cpu_io.h
new file mode 100644
index 00000000..68ce9b6f
--- /dev/null
+++ b/plugins/gme/game-music-emu-svn/gme/nes_cpu_io.h
@@ -0,0 +1,83 @@
+
+#include "Nsf_Emu.h"
+
+#if !NSF_EMU_APU_ONLY
+	#include "Nes_Namco_Apu.h"
+#endif
+
+#include "blargg_source.h"
+
+int Nsf_Emu::cpu_read( nes_addr_t addr )
+{
+	int result;
+	
+	result = cpu::low_mem [addr & 0x7FF];
+	if ( !(addr & 0xE000) )
+		goto exit;
+	
+	result = *cpu::get_code( addr );
+	if ( addr > 0x7FFF )
+		goto exit;
+	
+	result = sram [addr & (sizeof sram - 1)];
+	if ( addr > 0x5FFF )
+		goto exit;
+	
+	if ( addr == Nes_Apu::status_addr )
+		return apu.read_status( cpu::time() );
+	
+	#if !NSF_EMU_APU_ONLY
+		if ( addr == Nes_Namco_Apu::data_reg_addr && namco )
+			return namco->read_data();
+	#endif
+	
+	result = addr >> 8; // simulate open bus
+	
+	if ( addr != 0x2002 )
+		debug_printf( "Read unmapped $%.4X\n", (unsigned) addr );
+	
+exit:
+	return result;
+}
+
+void Nsf_Emu::cpu_write( nes_addr_t addr, int data )
+{
+	{
+		nes_addr_t offset = addr ^ sram_addr;
+		if ( offset < sizeof sram )
+		{
+			sram [offset] = data;
+			return;
+		}
+	}
+	{
+		int temp = addr & 0x7FF;
+		if ( !(addr & 0xE000) )
+		{
+			cpu::low_mem [temp] = data;
+			return;
+		}
+	}
+	
+	if ( unsigned (addr - Nes_Apu::start_addr) <= Nes_Apu::end_addr - Nes_Apu::start_addr )
+	{
+		GME_APU_HOOK( this, addr - Nes_Apu::start_addr, data );
+		apu.write_register( cpu::time(), addr, data );
+		return;
+	}
+	
+	unsigned bank = addr - bank_select_addr;
+	if ( bank < bank_count )
+	{
+		blargg_long offset = rom.mask_addr( data * (blargg_long) bank_size );
+		if ( offset >= rom.size() )
+			set_warning( "Invalid bank" );
+		cpu::map_code( (bank + 8) * bank_size, bank_size, rom.at_addr( offset ) );
+		return;
+	}
+	
+	cpu_write_misc( addr, data );
+}
+
+#define CPU_READ( cpu, addr, time )         STATIC_CAST(Nsf_Emu&,*cpu).cpu_read( addr )
+#define CPU_WRITE( cpu, addr, data, time )  STATIC_CAST(Nsf_Emu&,*cpu).cpu_write( addr, data )