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 BBS: The Home of Sydex, Inc. BBS
Date: 10-22-94 (09:54)             Number: 10300
From: SYSOP                        Refer#: 10296
  To: TED DECASTRO                  Recvd: YES 
Subj: roms                           Conf: (1) General
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THe FC32 ROM in particular, and some other adapter ROMs also use only
part of the available ROM space for program storage.  The way you figure
the actual size of a ROM BIOS extension is to look at the first three
bytes of the ROM.  They'll start out with 55 AA xx, and the "xx" is what
you want to look at.  This value indicates the actual code size in
512-byte blocks.  Thus 55 AA 04 would indicate a 2K code size.

Yes--my checksumming program looks at these bytes.

Chuck