System V Release 4.0 Developer Conferences

Doug Gwyn gwyn at smoke.ARPA
Mon Oct 3 17:50:48 AEST 1988


In article <1649 at ficc.uu.net> peter at ficc.uu.net (Peter da Silva) writes:
>What if you want to stick Blit terminals on it? Does that count?

I assume you mean the whole Blit ("xt" protocol) family, which includes
the 5620, 615, 625, 630, and PC/Layers.

It shouldn't be hard to port the existing stuff to SVR4, since all it
really needs is either kernel support for multiplexing (easy enough
with STREAMS) or a user-mode multiplexer, which is available from
several sources including AT&T-formerly-Teletype.  Pre-STREAMS "xt"
support used a special pseudo-device driver (that also handled details
of the "xt" protocol), but BSD-based systems usually have used ptys
with user-mode protocol handling and multiplexing.  If SVR4 doesn't
have enough hooks for at least one of these approaches to work, it
won't be worth using anyway.



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