mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-12-21 09:51:18 +00:00
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
|
|
||
|
|
#include "Hes_Emu.h"
|
||
|
|
|
||
|
|
#include "blargg_source.h"
|
||
|
|
|
||
|
|
int Hes_Emu::cpu_read( hes_addr_t addr )
|
||
|
|
{
|
||
|
|
check( addr <= 0xFFFF );
|
||
|
|
int result = *cpu::get_code( addr );
|
||
|
|
if ( mmr [addr >> page_shift] == 0xFF )
|
||
|
|
result = cpu_read_( addr );
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Hes_Emu::cpu_write( hes_addr_t addr, int data )
|
||
|
|
{
|
||
|
|
check( addr <= 0xFFFF );
|
||
|
|
byte* out = write_pages [addr >> page_shift];
|
||
|
|
addr &= page_size - 1;
|
||
|
|
if ( out )
|
||
|
|
out [addr] = data;
|
||
|
|
else if ( mmr [addr >> page_shift] == 0xFF )
|
||
|
|
cpu_write_( addr, data );
|
||
|
|
}
|
||
|
|
|
||
|
|
inline byte const* Hes_Emu::cpu_set_mmr( int page, int bank )
|
||
|
|
{
|
||
|
|
write_pages [page] = 0;
|
||
|
|
if ( bank < 0x80 )
|
||
|
|
return rom.at_addr( bank * (blargg_long) page_size );
|
||
|
|
|
||
|
|
byte* data = 0;
|
||
|
|
switch ( bank )
|
||
|
|
{
|
||
|
|
case 0xF8:
|
||
|
|
data = cpu::ram;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0xF9:
|
||
|
|
case 0xFA:
|
||
|
|
case 0xFB:
|
||
|
|
data = &sgx [(bank - 0xF9) * page_size];
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
if ( bank != 0xFF )
|
||
|
|
dprintf( "Unmapped bank $%02X\n", bank );
|
||
|
|
return rom.unmapped();
|
||
|
|
}
|
||
|
|
|
||
|
|
write_pages [page] = data;
|
||
|
|
return data;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CPU_READ_FAST( cpu, addr, time, out ) \
|
||
|
|
CPU_READ_FAST_( STATIC_CAST(Hes_Emu*,cpu), addr, time, out )
|
||
|
|
|
||
|
|
#define CPU_READ_FAST_( cpu, addr, time, out ) \
|
||
|
|
{\
|
||
|
|
out = READ_PROG( addr );\
|
||
|
|
if ( mmr [addr >> page_shift] == 0xFF )\
|
||
|
|
{\
|
||
|
|
FLUSH_TIME();\
|
||
|
|
out = cpu->cpu_read_( addr );\
|
||
|
|
CACHE_TIME();\
|
||
|
|
}\
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CPU_WRITE_FAST( cpu, addr, data, time ) \
|
||
|
|
CPU_WRITE_FAST_( STATIC_CAST(Hes_Emu*,cpu), addr, data, time )
|
||
|
|
|
||
|
|
#define CPU_WRITE_FAST_( cpu, addr, data, time ) \
|
||
|
|
{\
|
||
|
|
byte* out = cpu->write_pages [addr >> page_shift];\
|
||
|
|
addr &= page_size - 1;\
|
||
|
|
if ( out )\
|
||
|
|
{\
|
||
|
|
out [addr] = data;\
|
||
|
|
}\
|
||
|
|
else if ( mmr [addr >> page_shift] == 0xFF )\
|
||
|
|
{\
|
||
|
|
FLUSH_TIME();\
|
||
|
|
cpu->cpu_write_( addr, data );\
|
||
|
|
CACHE_TIME();\
|
||
|
|
}\
|
||
|
|
}
|
||
|
|
|
||
|
|
#define CPU_READ( cpu, addr, time ) \
|
||
|
|
STATIC_CAST(Hes_Emu*,cpu)->cpu_read( addr )
|
||
|
|
|
||
|
|
#define CPU_WRITE( cpu, addr, data, time ) \
|
||
|
|
STATIC_CAST(Hes_Emu*,cpu)->cpu_write( addr, data )
|
||
|
|
|
||
|
|
#define CPU_WRITE_VDP( cpu, addr, data, time ) \
|
||
|
|
STATIC_CAST(Hes_Emu*,cpu)->cpu_write_vdp( addr, data )
|
||
|
|
|
||
|
|
#define CPU_SET_MMR( cpu, page, bank ) \
|
||
|
|
STATIC_CAST(Hes_Emu*,cpu)->cpu_set_mmr( page, bank )
|
||
|
|
|
||
|
|
#define CPU_DONE( cpu, time, result_out ) \
|
||
|
|
result_out = STATIC_CAST(Hes_Emu*,cpu)->cpu_done()
|