These are the real Commodore 64 ROMs used by this build:
  basic.901226-01.bin  - C64 BASIC V2 (8192 bytes)
  kernal.901227-03.bin - C64 KERNAL rev 3, reset vector $FCE2 (8192 bytes)

They are already baked into the kernel via OS64-master/include/c64/c64rom.h,
so the prebuilt kernels and ISO need nothing further. These originals are here
for reference and if you rebuild c64rom.h.
