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neogeo.c: endian fix for softlist ROM loading [Alex Jackson]

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Alex W. Jackson 2013-11-05 06:45:44 +00:00
parent e0f1c2478f
commit 50cdc0f4ae
1 changed files with 10 additions and 5 deletions
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13
src/mame/drivers/neogeo.c
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@ -1094,15 +1094,20 @@ DEVICE_IMAGE_LOAD_MEMBER( neogeo_state, neo_cartridge )
size = image.get_software_region_length("maincpu");
machine().memory().region_free(":maincpu");
machine().memory().region_alloc(":maincpu",size, 2, ENDIANNESS_BIG);
memcpy(memregion("maincpu")->base(),image.get_software_region("maincpu"),size);
// Reset the reference to the region
m_region_maincpu.findit();
// for whatever reason (intentional, or design flaw) software loaded via software lists is swapped in endianess vs. the standard ROM loading, regardless of the above. Swap it to keep consistency
#ifdef LSB_FIRST
// software list ROM loading currently does not fix up endianness for us, so we need to do it by hand
UINT16 *src = (UINT16 *)image.get_software_region("maincpu");
UINT16 *dst = (UINT16 *)memregion("maincpu")->base();
for (int i=0; i<size/2; i++)
{
UINT16* ROM = (UINT16*)memregion("maincpu")->base();
ROM[i] = ((ROM[i]&0xff00)>>8) | ((ROM[i]&0x00ff)<<8);
dst[i] = FLIPENDIAN_INT16(src[i]);
}
#else
memcpy(memregion("maincpu")->base(),image.get_software_region("maincpu"),size);
#endif
size = image.get_software_region_length("fixed");
machine().memory().region_free(":fixed");