Hans Franke wrote:
>
> >> BTW: LDOS - I have a Modell III with external HD - hasn't
> >> there been an LDOS to boot from ? (I'm not the deep TRS guy).
>
> > The only "official" operating system for a Model III with a hard
> > drive _was_ LDOS. Also for the Model One. TRSDOS 6, later called
> > LS-DOS, was written by Logical Systems for the Model 4. (There
> > was also a version of LS-DOS for the Model II/12 series [8" drives]
> > but all of my copies were lost years back in a move, along with a
> > lot of other material related to those systems -- as Ben Franklin
> > once said, three moves equals one fire).
>
> Jep, but what about booting ? The only LDOS I have needs
> still to boot from FD.
Well, you could program your own boot ROM I suppose. There was
never any support for booting a III direct from hard disk. And
the Model 4 "boot from hard disk" option was never what I'd call
trustworthy -- among other things, it was very picky about just
how the hard disk was laid out -- I found it easier to use boot
floppies, as I had LS-DOS, Model III LDOS and CP/M+ on one 12 Mb
hard disk. The Model III came out over two years before there
was an official Tandy hard disk for it -- and the Model III boot
ROM as a result didn't know how to address circuits that hadn't
been designed yet.
--
Ward Griffiths <mailto:gram_at_cnct.com> <http://www.cnct.com/home/gram/>
WARNING: The Attorney General has determined that Alcohol, Tobacco,
and Firearms can be hazardous to your health -- and get away with it.
Received on Fri Oct 23 1998 - 04:52:13 BST