[comp.sys.atari.st] TOS RS232 bug?

singer@ll-xn.ARPA (Matthew R. Singer) (03/09/87)

Does any know of any bugs in the TOS rs232 handler regarding the
usage of CTS/RTS flow control?

A number of associates have just purchased the US Robotics HST modem for
use on with my BBS software.  Since the ST can not keep up at 9600bps
(assuming it's displaying the incoming data), it could be quite useful
if not necessary for CTS/RTS to work.

However, when CTS/RTS is enable via the RSCONF call, the system appears
to hang as soon as io to the AUX device begins.

Anyone heard of this?  


Matt Singer
singer@xn.ll.mit.edu

FoReM is the Friends of Rickey Moose

akw@osupyr.UUCP (03/11/87)

In article <453@ll-xn.ARPA> singer@ll-xn.ARPA (Matthew R. Singer) writes:

>use on with my BBS software.  Since the ST can not keep up at 9600bps
>(assuming it's displaying the incoming data), it could be quite useful
>if not necessary for CTS/RTS to work.

I have directly attatched my ST to the university network switch
which runs at 9600 with no problems (under Uniterm software;
it DID have problems with the VT52 emu and I*S Talk).

Did Simon Poole modify Uniterm for better hi-speed operation?

sansom@trwrb.UUCP (03/11/87)

In article <453@ll-xn.ARPA> singer@ll-xn.ARPA (Matthew R. Singer) writes:
>...Since the ST can not keep up at 9600bps...

The terminal program you're using is probably using the (small) system rs232
buffer, which would certainly account for the problem.  The answer?  Get a
program which establishes its own (large) rs232 buffer.  Simon Poole's
Uniterm _must_ be doing this, since I've had no problem at all using it at
9600bps.

-Rich

-- 
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 /// Richard E. Sansom                    TRW Electronics & Defense Sector \\\
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daemon@watmath.UUCP (03/12/87)

In article <87@osupyr.UUCP> you write:
>I have directly attatched my ST to the university network switch
>which runs at 9600 with no problems (under Uniterm software;
>it DID have problems with the VT52 emu and I*S Talk).
>
>Did Simon Poole modify Uniterm for better hi-speed operation?

Yes, Simon has a whopping big input buffer of 10K.  The default input
serial buffer is something like 128 bytes, so it can get overrun very
quickly.  By cat'ing a huge file without paging, you can overrun
Uniterm's input buffer (and lose characters), but you really have to
work at it.  I have never had to use flow control when using Uniterm,
even at 19200 baud (you should see kermit fly!).

Mike Berkley, University of Waterloo

UUCP:		{allegra,ihnp4,utcsri,utzoo}!watmath!watsup!mberkley
Bitnet:		mberkley%watsup%waterloo@csnet-relay.ARPA