🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: comp.sys.next.misc
Article #1274

Re: Serial input via DSP

#1274
From: Chris Lloyd
Date: Fri, 10 Apr 1992 23:33
39 lines
2228 bytes
In article <1992Apr10.075541.25466@email.tuwien.ac.at> rainer@eimoni.tuwien.ac.at writes:
>I remember having read something about fast serial I/O using the NeXT DSP
>in either csnm or csnp some time ago. Is there a PD or commercial program
>that does this, or have I been hallucinating?

No, you haven't been hallucinating :)

Yrrid Inc. is working on a tty driver that uses the DSP. There will be
a set of Unix /dev files that emulate the essential features of a tty
for use with all the standard serial port orientated programs.

We will be officially announcing it RSN (Under 6 weeks, _very_ safe estimate)
and will be shipping immediately after the announcement. We've had some
hangups, but everything is approaching final product stage rapidly now.
It will consist of a small cable to convert the DSP port into a 25 pin
RS-232 port and a software package.

Major features anticipated for the first release:

Emulation of essential tty operations, cooked, cbreak, raw and the most
 commonly used ioctl's.
6+k receive, 6+k transmit buffers in the DSP.
64+k receive buffer on the CPU side.
95% of single character processing done on the DSP side. cooked mode, character
 recognition etc.
128kbps sustained bidrectional IO.
Non standard and standard baud rates up to 128kbps.
Hardware flow control.

Pricing information can be requested via mail.

We are also accepting feature requests, if you have a particular need
send us email and we'll tell you if it's in there, if it's a good idea
and we're putting it in as we reply or if it will be added at a later
date.

Thanks for you interest,
-- 
:: Christopher Lloyd :: a74k110@titan.ucc.umass.edu :: Yrrid Inc. ::
Technical Details
Message-ID: <1992Apr10.233308.24599@nic.umass.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!news.mtholyoke.edu!nic.umass.edu!titan.ucc.umass.edu!a74k110
References: <1992Apr10.075541.25466@email.tuwien.ac.at>

Show Full Headers
Complete Article Headers
Newsgroups: comp.sys.next.misc,comp.sys.next.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!news.mtholyoke.edu!nic.umass.edu!titan.ucc.umass.edu!a74k110
From: a74k110@titan.ucc.umass.edu (Chris Lloyd)
Subject: Re: Serial input via DSP
Message-ID: <1992Apr10.233308.24599@nic.umass.edu>
Sender: usenet@nic.umass.edu (USENET News System)
Nntp-Posting-Host: titan.ucc.umass.edu
Organization: University of Massachusetts, Amherst
References: <1992Apr10.075541.25466@email.tuwien.ac.at>
Date: Fri, 10 Apr 1992 23:33:08 GMT
Lines: 39