Path: utzoo!attcan!uunet!cs.utexas.edu!sun-barr!newstop!sun!amdcad!brahms!indra
From: indra@brahms.amd.com (Indra Singhal)
Newsgroups: comp.windows.ms
Subject: Re: WinQVT 4.45 Zmodem file transfer problem - Error every 3Kb
Keywords: Is this the correct behavior?
Message-ID: <1990Oct24.093157.20717@amd.com>
Date: 24 Oct 90 09:31:57 GMT
References: <1990Oct17.203717.3810@cunixf.cc.columbia.edu>
Sender: usenet@amd.com (NNTP Posting)
Distribution: na
Organization: Advanced Micro Devices, Inc.
Lines: 24

ts@cunixa.cc.columbia.edu (Takahiro Sajima) writes:
>I'm transfering a file from a UNIX host to my using Zmodem
>protocol with sz on the UNIX side, and WinQVT 4.45 on the PC side.  The
>problem is that every 3 to 4 Kbytes of data, something wrong happens
>(eg. WinQVT reports a bad CRC, bad packet or something).  Then it seems
>take an eternity to recover from that error before it proceeds with
>transfer.  Because of this, the transfer throughput has been pathetic
>(on a small file -- ~12Kb, the overall transfer rate was 700bps on a
>2400bps line.  On a large file -- ~300Kb, the overall transfer rate
>dwindled down to 300bps on the same line).  Any idea on what's going on,
>and how to remedy the situation would be greatly appreciated.

Sorry, no solution... I have seen similar behavior with WinQVT &
QModem4.1b, however, I see errors every ~17408 bytes.. Bad CRC or
subpacket length errors. I have played with my settings to no avail. I
am running on a 10MHz 286, w/ 16550 UART, Telebit TB+ at 19200 baud
talking to SunOS 4.1 on a Sun 4/490.

Any ideas?

--
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      | (Indra Singhal) (408) 749-5445; Advanced Micro Devices
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