Compare of the files PROM.EXE and PROM_C99.EXE
The first is the original file, the second is the patched
file !
The address is depending on the load address there for
it needs with the exception of the lowest nibble not
to be equal to the disassembling list.

Address   Org	Patch
00011CDA: 83 	31
00011CDB: 7E 	C0
00011CDC: EA 	90
00011CDD: 00 	90