Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!tank!shamash!com50!mmm!manning
From: manning@mmm.UUCP (Arthur T. Manning)
Newsgroups: comp.os.os9
Subject: kermit dies - Is this a /t1 driver problem?
Summary: long char stream to /t1 causes io lockup
Message-ID: <1231@mmm.UUCP>
Date: 2 Feb 89 22:54:13 GMT
References: <4098@tekigm2.MEN.TEK.COM> <1404@uwovax.uwo.ca>
Reply-To: manning@mmm.UUCP (Arthur T. Manning)
Organization: 3M Company - Software and Electronics Resource Center (SERC); St. Paul, MN
Lines: 37

Patient: Os9 2.2  C 3.0 on Mizar 8115 with 7400 disk controller
         connected  to a BCC52 (SBC 8051 Basic controller) using
         kermit.

Symptoms: 
  connect using kermit 
  list out a screenfull of characters
  terminal dies
  

Everything works fine unless the BCC52 tries to print a lot of stuff real
fast.  Is this a problem  with the /t1 driver, or with the way kermit
sets up the sgbuff for the field descriptor  returned by open("/t1",3).

here's what os9 kermit does with /t1 to put it in 'raw mode :

    if(tempsg.sg_class==0){  /* only change things for scf */
        /* Microware C generates better code with 0 only specified once */
        tempsg.sg_delete=
        tempsg.sg_backsp=
        tempsg.sg_echo  =
        tempsg.sg_alf   =
        tempsg.sg_pause =
        tempsg.sg_dlnch =
        tempsg.sg_eorch =
        tempsg.sg_eofch =
        tempsg.sg_rlnch =
        tempsg.sg_dulnch=
        tempsg.sg_psch  =
        tempsg.sg_kbich =
        tempsg.sg_kbach = 0;
  }

-- 
Arthur T. Manning                                Phone: 612-733-4401
3M Center  518-1                                 FAX:   612-736-3122
St. Paul  MN  55144-1000   U.S.A.                Email: manning@mmm.uucp