Article View: comp.sys.ibm.pc.misc
Article #1369Re: ProComm 2.4.3 Kermit up/down-load times
From: Peter Klavins
Date: Mon, 31 Aug 1992 04:52
Date: Mon, 31 Aug 1992 04:52
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IP25179@portland.caps.maine.edu writes: > When I download in Kermit using ProComm 2.4.3, the estimated time for the > process shown in the pop-up 'window' is always half of the actual time re- > quired. Do I have some untapped potential here that I'm missing? Or is > the program just a taco short of a combination platter? This might be explained if Kermit is running in 7-bit mode, and then whenever it finds a byte with bit 8 set, it prefixes that byte with the special 8-bit prefix character (yes, one whole extra character), and then sends the actual byte minus bit 8, therefore sending two bytes for one actual byte. Kermit can be set to run in 8-bit mode by option negotiation at the start of the transfer, but both ends would have to support that mode, and I don't know whether Procomm 2.4.3, and the host you were using, support that mode, and/or are able to enable it. By the way, Kermit supports many other modes that can be negotiated, such as sliding windows, long packets, and turning these options on really makes it fly! To find out more about the Kermit protocol in general, there is an excellent book about it available in computer bookstores, and I believe there is a special edition of that book for the PC, including software, and then there is the Kermit software source at Columbia University watsun.cc.columbia.edu:kermit, from which you can download the latest Kermit sources and documentation for any machine under the sun. -- ------------------------------------------------------------------------ Peter Klavins Internet: peter@citr.uq.oz.au Fidonet: 3:640/821 Centre for Information Technology Research Phone: +61 7 365 4321 University of Queensland QLD 4072 Australia Fax: +61 7 365 4399
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Newsgroups: comp.sys.ibm.pc.misc Path: arc1-ca.pugleaf.net!sparky!uunet!munnari.oz.au!bunyip.cc.uq.oz.au!peter From: peter@citr.uq.oz.au (Peter Klavins) Subject: Re: ProComm 2.4.3 Kermit up/down-load times Message-ID: <peter.715236739@citr.uq.oz.au> Sender: news@bunyip.cc.uq.oz.au (USENET News System) Organization: Prentice Centre, University of Queensland References: <92243.062901IP25179@portland.caps.maine.edu> Date: Mon, 31 Aug 1992 04:52:19 GMT Lines: 29