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Article #9130

MS Kermit 3.0 problem with DSZ

#9130
From: WA7KGX
Date: Tue, 23 Jan 1990 08:00
34 lines
1764 bytes
The "push" command (^[p) in MS-Kermit 3.00 sends an XOFF character to
the modem before calling DOS.

Using this to activate DSZ's term mode with a "dsz t" command
causes most remote hosts to freeze.  The remote host can be
unfrozen by keyboarding Ctrl-Q in DSZ's terminal mode.

Since there has been some discussion about file transfer speeds
lately, I ran some tests as long as I had MS-Kermit set up.

SUPK412.ZIP 75136 bytes sent at 2400 bps direct connect from an
Everec 1800 AT clone 8mHz/0ws to an 18 mHz Intel 386 motherboard.

8-Bit line
cps	Protocol/command
156	MS Kermit 3.00 to MS Kermit 3.00  (defaults)
182	MS Kermit 3.00 to MS Kermit 3.00  (windows=2 length=2000)
184	MS Kermit 3.00 to Pro-YAM 17.51 (windows=2 length=2000)
231	Pro-YAM 17.51 ZMODEM (defaults)
237	Pro-YAM 17.51 ZMODEM-90(Tm) MobyTurbo(Tm) (sz -m)

7-Bit line
cps	Protocol/command
156	MS Kermit 3.00 to MS Kermit 3.00  (windows=4 length=2000)
190	Pro-YAM 17.51 ZMODEM-90 PACK-7 (sz -EP)

Kermit transfers used 8 bit CRC, ZMODEM used 32 bit CRC.
Times were measured with a stopwatch.  Your results may vary.

Chuck Forsberg WA7KGX          ...!tektronix!reed!omen!caf 
Author of YMODEM, ZMODEM, Professional-YAM, ZCOMM, and DSZ
  Omen Technology Inc    "The High Reliability Software"
17505-V NW Sauvie IS RD   Portland OR 97231   503-621-3406
TeleGodzilla:621-3746 FAX:621-3735 CIS:70007,2304 Genie:CAF
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Message-ID: <14@omen.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!omen!caf

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!omen!caf
From: caf@omen.UUCP (WA7KGX)
Newsgroups: comp.sys.ibm.pc
Subject: MS Kermit 3.0 problem with DSZ
Keywords: kermit dsz zmodem xoff xon
Message-ID: <14@omen.UUCP>
Date: 23 Jan 90 08:00:41 GMT
Organization: Omen Technology INC
Lines: 34