Date   : Mon, 09 Apr 1984101:43:00-PST
From   : meier@isl
Subject: Format of .com files

Michal,

       The format of .com files is a simple core map of the memory beginning at
hex address 100.  The first logical sector corresponds to addresses 100-17f,
the
second sector to 180-1ff, etc.  The storage is contiguous and there is no
sentinel.  The eof is indicated when there are no more logical sectors
associated
with that file.  When a load is performed, the .hex file (which uses at least
2 bytes per instruction byte) is used to load memory.  Then (assuming that
bios has not been overwritten), the memory contents are copied out to disk
starting at address 100 and proceeding to the highest address indicated in the
.hex file.
                                       Bob (meier@isl)