libretro/beetle-pce-fast-libretro
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Merge pull request #134 from negativeExponent/memmap

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Add PCE-CD RAM to retro_memory_map
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Twinaphex 2019-12-07 23:52:55 +01:00 committed by GitHub
commit 55beff8065
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 49 additions and 2 deletions
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51
libretro.cpp
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@ -1454,7 +1454,6 @@ static void check_variables(void)
else else
turbo_enable[4][1] = 0; turbo_enable[4][1] = 0;
} }
} }
bool retro_load_game(const struct retro_game_info *info) bool retro_load_game(const struct retro_game_info *info)
@ -1516,6 +1515,54 @@ bool retro_load_game(const struct retro_game_info *info)
VDC_SetPixelFormat(); VDC_SetPixelFormat();
struct retro_memory_descriptor descs[8];
struct retro_memory_map mmaps;
int i = 0;
memset(descs, 0, sizeof(descs));
descs[i].ptr = (uint8_t*)BaseRAM;
descs[i].start = 0xf8 * 8192;
descs[i].len = 8192;
descs[i].select = 0xFFFFE000;
i++;
if (IsPopulous)
{
descs[i].ptr = (uint8_t*)(ROMSpace + 0x40 * 8192);
descs[i].start = 0x40 * 8192;
descs[i].len = 8192 * 4;
i++;
}
else
{
descs[i].ptr = (uint8_t*)SaveRAM;
descs[i].start = 0xf7 * 8192;
descs[i].len = 2048;
i++;
}
if (PCE_IsCD)
{
// Super System Card RAM
descs[i].ptr = (uint8_t*)(ROMSpace + 0x68 * 8192);
descs[i].start = 0x68 * 8192;
descs[i].len = 8192 * 24;
descs[i].select = 0xFFFD0000;
i++;
// CD RAM
descs[i].ptr = (uint8_t*)(ROMSpace + 0x80 * 8192);
descs[i].start = 0x80 * 8192;
descs[i].len = 8192 * 8;
descs[i].select = 0xFFFF0000;
i++;
}
mmaps.descriptors = descs;
mmaps.num_descriptors = i;
environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
return game; return game;
} }
@ -1879,7 +1926,7 @@ size_t retro_get_memory_size(unsigned type)
return 32768; return 32768;
return 2048; return 2048;
case RETRO_MEMORY_SYSTEM_RAM: case RETRO_MEMORY_SYSTEM_RAM:
return sizeof(BaseRAM) - 8192; return 8192;
default: default:
break; break;
} }