Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!fwi.uva.nl!croes
From: croes@fwi.uva.nl (Felix A. Croes)
Newsgroups: comp.os.minix
Subject: Re: Minix ST 1.5.10.2/3 rs232 problems
Keywords: ST rs232
Message-ID: <1435@carol.fwi.uva.nl>
Date: 8 Nov 90 22:17:38 GMT
References: <1433@carol.fwi.uva.nl> <1434@carol.fwi.uva.nl>
Sender: news@fwi.uva.nl
Lines: 21

croes@fwi.uva.nl (Felix A. Croes) writes:

>[...]
>>  The fact that the first block is received correctly and the varied error
>>messages of zmodem seem to suggest a buffering problem (note that when receiving
>>from this particular remote machine, data is only received and nothing is send
>>back except in the case of an error). The problems occur with any modem speed,
>>however.

  I have found the problem, or rather I have found where it isn't: not in Minix.
I reverted to 1.5.10, which had always worked fine, to do some tests, and the
same problems occurred. Appearently it is either caused by the phone connection
or the remote machine. It seems that extensively testing two different
connections to four different machines with customized private communication
software on the remote machine (for protection against friendly super users
installing wonderful new versions) was not careful enough.

  At least now I know exactly how the tty driver works :-)
--

Felix Croes    (croes@fwi.uva.nl)