1 files changed, 72 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6.0/gme/gb_cpu_io.h b/plugins/gme/game-music-emu-0.6.0/gme/gb_cpu_io.h
new file mode 100644
index 00000000..8bd69aa2
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6.0/gme/gb_cpu_io.h
@@ -0,0 +1,72 @@
+
+#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 )