[sebhc] DISKETTES and stuff

[Pat Swayne]

Carroll and Dave wrote:

> >Also, does anyone know if there was ever a DOS version for the 8080, or
> >was CP/M the closest thing?
> >Carroll
>
>There were several OS's for the 8080, however MS-DOS or PC-DOS was not
>one of them - CP/M is probably the closest, as DOS grew from roots in
>CP/M.

Actually, HDOS is the "father" of "DOS" (MS-DOS or PC-DOS), Gordon Letwin 
and Greg Chandler worked for Heath Company and developed HDOS. Then they 
went to Microsoft and developed MS-DOS. The file system used in MS-DOS (FAT 
-- File Allocation Table) is based on the HDOS file allocation system, not 
on the CP/M system. CP/M has the allocation units stored in the directory 
enties, not in separate parts of the disk, like HDOS and MS-DOS do.
-- Pat

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