Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 16 Jul 96 23:59:37 +0200
From:      Ben Stuyts <benst@stuyts.nl>
To:        questions@freebsd.org
Subject:   Re: 2.1.5R: UUCP errors, no flow control?
Message-ID:  <9607162159.AA25913@daneel.stuyts.nl>
In-Reply-To: <Pine.BSI.3.94.960715211438.2447B-100000@gdi.uoregon.edu>
References:  <Pine.BSI.3.94.960715211438.2447B-100000@gdi.uoregon.edu>

next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 15 Jul 1996, Doug White wrote:

> On Tue, 16 Jul 1996, Ben Stuyts wrote:
>
> First of all, I am new to FreeBSD, but am very impressed with what I've seen
> so far. I have a little problem though: I am setting up a system with 2.1.5R,
> and I can't get UUCP to work properly.
>
> There is an external modem (ZyXEL 1496E+) on cuaa1, and I am trying to
> connect with another system through UUCP. Outgoing files go just fine, but  
> incoming files give lots of NAK's, checksum errors, etc. I do not see any
> RTS/CTS flow control (I have one of those little RS232 tester on the rs232  
> port), so I suspect it must be related to that.
>
> I would suspect your modem isn't set to assert hardware flow control then.
> Adjust your modem as necessary and see if that helps.
>
> Or your cable is incomplete; make sure to get a complete serial cable that
> supports hardware flow control.

Well, I checked both today, even tried two other modems (another ZyXEL 1496E+  
and a 2864), but still no good.

Finally I disabled the two rs232 ports in the motherboard's bios, and put in  
an old isa-card with two 16450's and an LPT on it. Voila, it works... The  
funny thing is, I still don't see any flow control, but the errors are gone.  
Strange, huh? Could it be that the 16550 drivers are buggy? I guess I could  
try building a kernel with the 16550 features disabled, or is there an easier  
way to check this?

Now, I wanted those additional ports anyway, but I read somewhere that that's  
not possible due to the pc's com port irq sharing, right?

Best regards,
Ben



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9607162159.AA25913>