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libretro: include SMS FM state in retro_serialize_size #266

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libretro: include SMS FM state in retro_serialize_size #266

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8 changes: 7 additions & 1 deletion platform/libretro/libretro.c
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Original file line number Diff line number Diff line change
Expand Up @@ -797,13 +797,19 @@ size_t retro_serialize_size(void)
{
struct savestate_state state = { 0, };
unsigned AHW = PicoIn.AHW;
unsigned hardware = Pico.m.hardware;
int ret;

/* we need the max possible size here, so include 32X for MD and MCD */
/* we need the max possible size here, so include 32X for MD and MCD,
* and the SMS FM unit state, which is only stored once a game has
* accessed the FM port (frontends may cache this size at load time) */
if (!(AHW & (PAHW_SMS|PAHW_PICO|PAHW_SVP)))
PicoIn.AHW |= PAHW_32X;
else if (AHW & PAHW_SMS)
Pico.m.hardware |= PMS_HW_FMUSED;
ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
PicoIn.AHW = AHW;
Pico.m.hardware = hardware;
if (ret != 0)
return 0;

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