The following should do what you want, given that the rom is at rom.nds in the same directory. Since your last post was 3 days ago, you likely figured out your problem, but I was bored so I decided to write up the code anyways.
program DataFiles;
var
ÂÂÂÂf: file of byte;
ÂÂÂÂb1: byte;
ÂÂÂÂb2...