ZModem

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2 total messages Started by Soubyran Richard Mon, 28 Dec 1992 19:52

Author: Soubyran Richard
Date: Mon, 28 Dec 1992 19:52

29 lines
1322 bytes

Hello sgiers!

I have avery weird problem... When I am using zmodem (sz) to
transfer files between my Mac and the Indigo, the transfer hangs
and quit when there is only 6 seconds left in the transfer. This
problem exist only since we have changed the OS last summer. We
were running version 3 of IRIX back then. a few weeks ago, we
changed to IRIX 4.0.5 and now the transfer hangs just at 3 seconds
from the end... That's VERY strange...

Before upgrading to IRIX 3 something, everything was fine! When I
use Kermit, no problems at all... The tech support at our
university is no good at all...

	"We don't know what's wrong." 
	"We do not have that problem here in the office"
	etc

is all they can say.

One more thing... this problem occurs only if the file is big
enough to make the transfer go over 60 seconds. Any file less than
that... no problems...

Please help!

Richard Soubyran
soubyran@alize.ere.umontreal.ca

Re: ZModem

Author: SpIke
Date: Tue, 29 Dec 1992 21:27

45 lines
1959 bytes

soubyran@ERE.UMontreal.CA (Soubyran Richard) writes:


>Hello sgiers!

>I have avery weird problem... When I am using zmodem (sz) to
>transfer files between my Mac and the Indigo, the transfer hangs
>and quit when there is only 6 seconds left in the transfer. This
>problem exist only since we have changed the OS last summer. We
>were running version 3 of IRIX back then. a few weeks ago, we
>changed to IRIX 4.0.5 and now the transfer hangs just at 3 seconds
>from the end... That's VERY strange...

>Before upgrading to IRIX 3 something, everything was fine! When I
>use Kermit, no problems at all... The tech support at our
>university is no good at all...

>	"We don't know what's wrong." 
>	"We do not have that problem here in the office"
>	etc

>is all they can say.

>One more thing... this problem occurs only if the file is big
>enough to make the transfer go over 60 seconds. Any file less than
>that... no problems...

	SZ(1)               RISC/os Reference Manual                SZ(1)
	
	NAME
	     sx, sb, sz - XMODEM, YMODEM, ZMODEM file send
	
	BUGS
	     On at least one BSD system, sz would abend it got within a
	     few kilobytes of the end of file.  Using the "-w 8192" flag
	     fixed the problem.  The real cause is unknown, perhaps a bug
	     in the kernel TTY output routines.

I've found that using this magic flag works for me on my system; it may also
work for you.  Good luck!

	David Drascic
	Teleoperation and Control Laboratory, Industrial Engineering
	University of Toronto
	drascic@ie.utoronto.ca

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