Security code

Pointed to at $182 (in the 68k_program_header).

The System ROM compares this code byte per byte with its internal copy (which is located at $C146CA for SP-E, and $C146A2 for SP-E v2) as part of the cartridge detection routine.

There is some jumps to the security code inside the system ROM but it seems to never be called (at least in SP-E v2).

From the official SNK doc :

From KOF96 (CD):

From sp-s2.sp1 :