[TUHS] Floppy to modern files for Usenet maps

Henry Bent henry.r.bent at gmail.com
Wed Jul 10 05:19:05 AEST 2019

On Tue, 9 Jul 2019 at 13:34, Henry Bent <henry.r.bent at gmail.com> wrote:

> On Tue, 9 Jul 2019 at 13:26, Seth Morabito <web at loomcom.com> wrote:
>> On Tue, Jul 9, 2019, at 10:13 AM, Henry Bent wrote:
>> > On Tue, 9 Jul 2019 at 12:28, Mary Ann Horton Gmail <mah at mhorton.net>
>> wrote:
>> >> Does anyone have anything put together that can easily do the "leroy"
>> >>  thing described here:
>> >>
>> >> http://www.stargatemuseum.org/maps/032383.GRF.txt
>> >>
>> >>  and produce the graphical map it contains?
>> >>
>> >>  Mary Ann
>> >
>> > I got as far as compiling leroy on 4.1C BSD and feeding the attached
>> files through it.
>> I'm impressed that you were able to find leroy! I just did about fifteen
>> minutes of searching online and was unable to find it. If you wouldn't
>> mind, could you share it with us? I'd enjoy playing with it.
> It's on the 1981 Usenix tape, in the ucol directory:
> https://www.tuhs.org/Archive/Applications/Shoppa_Tapes/usenix_81.tar.gz
> It looks like leroy produces output for an "extended" form of plot; from
> the docs:
> --
>      The plot stream leroy emits is intended for,  and  must
> be directed to, an extended UNIX plot filter.  These filters
> recognize a number of commands not included in  the  vanilla
> seventh  edition  filters,  mostly  dealing with the Hershey
> fonts.  The extended plot filters are upward compatible with
> their  predecessors  and  have been implemented in a fashion
> which makes tailoring new devices filters very  straightfor-
> ward.   The  source  code  is available on request.  Filters
> currently exist for the Tektronix 4014,  the  Versatec,  the
> HP7221A, and the Qume.
> --
> -Henry

I realized that UCol was using a PDP-11, not a VAX, so I switched to
running things under Ultrix 3.1. Using the extended plot libraries that
UCol provided on the usenix tape, I was able to get Tektronix 4014 output
which I was able to run through a modern tek2plot.  Here are links to the
raw plot file and an SVG, which I think is most useful for this sort of


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