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Add core option: RAM power up state

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This commit is contained in:
retro-wertz
2018-11-25 21:45:52 +08:00
parent 684106fb3a
commit 9d9c48007d
2 changed files with 27 additions and 1 deletions
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17
src/drivers/libretro/libretro.c
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@@ -718,6 +718,7 @@ void retro_set_environment(retro_environment_t cb)
{ "fceumm_zapper_mode", "Zapper Mode; lightgun|mouse" },
{ "fceumm_show_crosshair", "Show Crosshair; enabled|disabled" },
{ "fceumm_overclocking", "Overclocking; disabled|2x-Postrender|2x-VBlank" },
{ "fceumm_ramstate", "RAM power up state (Restart); fill $ff|fill $00|random" },
{ NULL, NULL },
};
@@ -1841,6 +1842,7 @@ static char slash = '/';
#endif
extern uint32_t iNESGameCRC32;
extern int option_ramstate;
bool retro_load_game(const struct retro_game_info *game)
{
@@ -1903,10 +1905,25 @@ bool retro_load_game(const struct retro_game_info *game)
struct retro_memory_descriptor descs[64];
struct retro_memory_map mmaps;
struct retro_variable var = {0};
if (!game)
return false;
var.value = 0;
var.key = "fceumm_ramstate";
/* set this variable before calling PowerNES() */
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (!strcmp(var.value, "random"))
option_ramstate = 2;
else if (!strcmp(var.value, "fill $00"))
option_ramstate = 1;
else
option_ramstate = 0;
}
PowerNES();
check_system_specs();
#if defined(_3DS)