Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!haven!udel!new
From: new@udel.edu (Darren New)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Question about multiple serial boards
Message-ID: <8438@nigel.udel.EDU>
Date: 17 Jan 90 00:02:38 GMT
References: <1013@lpami.wimsey.bc.ca> <1053@madnix.UUCP>
Sender: usenet@udel.EDU
Reply-To: new@udel.edu (Darren New)
Organization: University of Delaware
Lines: 16

O.K., great!  Next question:
Can anybody tell me an easy way to do an asynchronous, abortable read
of a device from AREXX?  Basically, I want to read the serial port
with a timeout.  I have one quite kludgy method: task one reads lines
and posts them to a port.  Task two delays and sends "TICK" to the same
port every ten seconds. Task three reads the port and eventually times
out.  It works, but is really ugly.  Also, can anybody tell me how to
automatically change the serial-port speed depending on the connect-speed
without losing the carrier?  I.e., my Hayes will send "connect 1200" at 
300 baud and then switch.  Can any AUX: driver be switched when I get this line
to 1200 baud without a close and reopen, which probably drops DTR?
Alternately, can anybody direct me to the recent "rexserdev" programs/libs/etc
mentioned recently here or in comp.lang.rexx?  I would just as soon do
this whole mess in ARexx w/o resorting to C hosts, but a pre-written host
(freely distributable) would be acceptable, possibly better.
       Again, thanks in advance for any info anyone supplies! -- Darren