Path: utzoo!utgpu!water!watmath!clyde!rutgers!im4u!ut-sally!utah-cs!utah-gr!uplherc!sp7040!jose!ken
From: ken@jose.UUCP (Ken MacLeod)
Newsgroups: comp.dcom.modems
Subject: Re: Connecting a TrailBlazer to a Sun 3/280
Summary: Also works on NCR Tower 32/600
Keywords: Sun TrailBlazer BSD uucp flow control 19200
Message-ID: <131@jose.UUCP>
Date: 12 Feb 88 23:58:31 GMT
References: <272@coherent.uucp>
Distribution: comp
Organization: Price Savers, Salt Lake City, UT
Lines: 68


  The following patch also works on 'uucico' and 'cu' on the
NCR Tower 32/600.  The 'uucico' patch was found at 0x13eb2 on my
system.  The 'cu' patch was found at 0x2160 for '4800' and 0x21b0
for '12'.  We also run our system locked at 19200.

In article <272@coherent.uucp>, dplatt@coherent.uucp (Dave Platt) writes:
< After some a couple of days of fiddling around, trying options, and
< muttering arcane curses directed at both hardware and software, I've
< managed to establish a successful and reliable marriage between our
< new TrailBlazer Plus modem and our Sun 3/280 file-server.  We're now
< using the 'Blazer for uucp dialout into other 'Blazer modems as well
< as into V.22bis (2400-baud) and 212 (1200-baud) modems, and are also
< answering calls from another 'Blazer at Ames.  I'm posting a short summary
< of our configuration for the benefit of others who may be establishing
< similar hookups.
< 
< First issue: we wanted to lock the modem-to-host communication link to
< 19200 baud in order to achieve maximum throughput.  Unfortunately,
< Sun's obsolete uucp software does not recognize 19200 as a valid
< speed.  telebit!mike forwarded to me the instructions for patching
< uucico to establish a 19200-baud speed (the 4800-baud speed is
< sacrificed to make this possible);  here's what must be done:
< 
< 		------------------------------------------
< 
<  Date: Thu, 6 Aug 87 17:24:46 PDT
<  From: gnu (John Gilmore)
<  Message-Id: <8708070024.AA28084@hoptoad.uucp>
<  To: sun!mclinger
<  Subject: SunOS 3.3 uucp patch to support 19200 baud
< 
<  This patch to /usr/lib/uucp/uucico allows it to parse '19200' as a
<  valid speed for dialing out (in L.sys and L-devices).  There is a table
<  which consists of pairs of ints, e.g. 9600 and B9600 (13).  This patch
<  replaces the entry for 4800, B4800 (12) with 19200, B19200 (14).  Be
<  sure to check the permissions and ownerships of uucico and restore them
<  after patching.
< 
<  To locate the 4800 baud entry, you can do:
< 
<  adb -w /usr/lib/uucp/uucico
<  20000?L 0t4800
< 
<  This should display an address.  On hoptoad (68020 version) this address
<  is 20A0C.  To display that table entry, you can do:
< 
<  ?DD
< 
<  it should say:
<  xxxxxx:	4800	12
< 
<  to patch it,
< 
<  ?W 0t19200 0t14
< 
<  Don't forget the 0t's, which say these numbers are in decimal.
<  You're done, type ^D and try it.
< 
< 		------------------------------------------
< 
< The SunOS 3.3 patch that John suggests works fine on SunOS 3.4 as well.
< 
-- 
Ken MacLeod                                    Price Savers Wholesale Warehouse
ut-sally!utah-cs!utah-gr!uplherc!sp7040!jose!ken           Salt Lake City, Utah
(801) 277-6966 (evening)                                  (day)  (801) 264-7224
            I don't let anyone share my views, there all mine.