Date: Tue, 20 Feb 1996 01:39:55 GMT From: Christian ChaPel <chris@awawak.gna.org> To: bde@zeta.org.au Cc: freebsd-bugs@FreeBSD.ORG Subject: Re: problems with serials ports Message-ID: <199602200139.BAA02325@awawak.gna.org> In-Reply-To: <199602161811.FAA23843@godzilla.zeta.org.au> (message from Bruce Evans on Sat, 17 Feb 1996 05:11:49 %2B1100)
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Hi,
>>>>> "Bruce" == Bruce Evans <bde@zeta.org.au> writes:
>> I have problems with my serials ports. My hardware is an ASUS
>> P/I-P55TP4XE(2.4 Rev) with an on-board 'Multi-I/O' using the
>> UMC 8669F Super multi-I/O chip (16550 Fast UART compatible),
>> and P120, 24Mo, NCR810.
>> When I'm using uucp, the chat connexion is well, but the
>> transfert is very slow (200bps) and it fail. I try 2.0.5R,
>> 2.1.0R, 2.2-960130-SNAP, it's the same thing. I try the second
>> serial port at address COM2, COM4 without any more success
Bruce> I have the same motherboard and the same problems in
Bruce> -current. The chat connection often fails too. This seems
Bruce> to be a hardware bug. The bytes received in siointr1()
Bruce> when /etc/rc is sent are:
<skip>
Bruce> Most of the garbage bytes have their high bit set. Perhaps
Bruce> the start or stop bits are getting mixed with the data
Bruce> bits.
>> I try 'ppp' and it works well.
Bruce> zmodem seems to work well too. This might be because the
Bruce> receiver does less output for acks.
>> I try uucp with the same machine on Linux, it works well.
Bruce> This is surprising. The Linux serial interrupt handler is
Bruce> very similar.
...
Bruce> Bruce
I got this message on news :
) From: peter@citylink.dinoex.sub.org (System Administration)
) Subject: Taylor-UUCP not running with 16550 SIO (UMC Custom Chip)
) Newsgroups: comp.unix.bsd.freebsd.misc,comp.mail.uucp
) Date: Mon, 12 Feb 1996 21:56:02 GMT
) Organization: Buero fuer Sektenforschung und Qualitaetspruefung in der Esoterik
) Content-Type: text/plain; charset=ISO-8859-1
) MIME-Version: 1.0
) Content-Transfer-Encoding: 8bit
) Message-ID: <DMonLF.Ctq@citylink.dinoex.sub.org>
) Lines: 27
)
)
) Hi,
)
) there was great trouble getting UUCP to work with with these new control-
) ler-embedded 16550-FIFO-SIOs. It did work as usual until the line "handshake
) successful", and then was not able to receive one single block of data with-
) out error, until after about 10 Minutes it reports: 0 bytes transferred, 0
) bps. This is baudrate-independent, it happens with 300 baud as with 57600
) baud. With g-proto, uucico can send, but won't receive anything.
)
) Operating System is FreeBSD-2.1, and everything else does work on that SIOs
) (Xmodem, Zmodem, PPP). UUCP does work with the OS and the configuration,
) if one puts an additional, usual SIO add-on-card into the machine (no matter
) if 8250 or 16550).
)
) When i got angry about that, i started to change values in the uucp-source.
) I succeded in libunix/serial.c by disactivating the "setmin" code (it
) says: "if we can tell the terminal not to return after we have a certain
) number of characters, do so."). uucico consumes some more CPU power now,
) but runs with good performance.
)
) Explanations, anybody?
)
) Peter
) --
) Write to: Peter Much * Koelnische Str. 22 * D-34117 Kassel * +49-561-774961
) peter@citylink.dinoex.sub.org * much@hrz.uni-kassel.de
)
I comment lines in src/gnu/libexec/uucp/libunix/serial.c (lines 2163-2212) and I have compiled uucico.
UUCP works well now with the on-board serials ports.
But I tell so do you have explanations...
I thinks this help anybody else.
Best Regards
--
------------------------------------------------------------------------------
christian ChaPel | | ////// | | Email: chris@awawak.gna.org
Paris FRANCE | | ( O O ) | | Phone: +33.1 40 38 38 29
| | o0Oo ^ o0Oo | |
-FreeBSD 2.1.0-RELEASE---"Ce n'etait ni vrai ni faux, mais vecu" A. Malraux---
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