Here is confirmed: kf2k4spe uses DECRYPTED samples, just renamed inverse (like svcboot), this cart cannot use snk protection chips because:
1.- The space that is used for for CMC50 + PCM2 chips is replaced with the p3 and the protection chip that descrambles the program code (basically the 4 Mo P-ROM).
2.- SNK doesn't provide the exact algorithms to encrypt the carts and chip information
3.- Bootleggers have their own protections
4.- the CRC/SHA1 information for the real x80 and sound IS this one (dumped 2 times by the same guy)
NEO_BIOS_SOUND_128K( "k2k4s-m1.bin", CRC(5a47d9ad) SHA1(0197737934653acc6c97221660d789e9914f3578))
ROM_REGION( 0x1000000, REGION_SOUND1, ROMREGION_SOUNDONLY )
ROM_LOAD( "2k2-v2.bin", 0x000000, 0x800000, CRC(8ad2edbd) SHA1(b38aa4466dc8affbaed54c459948589ffd495874) )
ROM_LOAD( "2k2-v1.bin", 0x800000, 0x800000, CRC(b887d287) SHA1(f593a5722df6f6fac023d189a739a117e976bb2f) )
maybe Razz got bad information, like it happened with matrimbl (first addy in kawaks not dev using PCM2 ROMs...) and kof2k2pls and set 2, the 2 sets MUST use roms from bootleg set, because they neither use CMC50 or PCM2 protections, same for kf2k2mp and mp2...
See ya!!!!!
P.D. James is right, Razz is not the only dumper of neogeo carts...