🚀 go-pugleaf

In article <3614@osu-eddie.UUCP> bob@tut.cis.ohio-state.edu (Bob Sutterfield) writes:
>In article <6787@mimsy.UUCP> steve@mimsy.UUCP (Steve D. Miller) writes:
>	It sounds like they've [Haeberli] re-invented (or borrowed) some ideas
>from the Evans and Sutherland Picture System's environment.  As far
>back as the PS-300 in 1983 or so, this sort of stuff was available,
>and maybe before then or on earlier PSs.
>[...]
>	There was a development environment (PIGS?) that allowed one
>to manipulate pictures of boxes representing functional elements of a
>dataflow circuit. [...]

Probably folks from E&S are more competent to comment on this, but unless
I'm mistaken, you're referring to the "network editor" written by Dave
Schlegel.  I used it a few times;  not too novice-friendly, and was a little
slow, but very sophisticated.  Also necessary, since the "Pascal-like"
language has approximately the feel of assembly language, what with dozens
of little connection numbers that all have to match up!  I don't think the
dataflow language of the PS-300 is sufficiently appreciated by the language
community - I found that programming dataflow seems to need some rather
strange synchronization-type operators of a sort never mentioned in the
literature...  The language is quite powerful - Sandra Loosemore wrote a
flight simulator complete with SLC streets and the Wasatch mountains.
The whole thing runs locally in the PS-300!

							stan shebs
							shebs@cs.utah.edu