NEO-CMC



Most infos from [MAME:neocrypt.c]

C and (merged) S ROM banking and decryption chips found on CHA cartridge boards, in two (?) versions:
 * "CMC42": 90G06CF7042
 * "CMC50": 90G06CF7050 (can also be used to decrypt M1 ROMs)



Also found on ROM-only arcade boards, without the "NEO-CMC" marking.