meier%isl@sri-unix.UUCP (04/09/84)
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)