![]() ![]() ![]() Moved footnotes to the appropriate place in the text.Ĭhanged number base from octal to hex (welcome to the nineties). Removal of all implementation specific details referring to those antiques of telecom 'rz' and 'sz'. Removal of a lot of irrelevant but nice facts about the weather and some other nice subjects for conversation. Removal of all overstrike typesetting tricks which make this file practically uneditable and unviewable. Removal of all references to xmodem ymodem kermit and so on. if something is public domain then leave it at that. Removal of all plugs relating to omen technology products etc. If these terms are unacceptable to you than delete these files NOW!.Ĭhanges relative to zmodem.doc as provided by various sources: This file is provided 'as is' for no fee whatsoever. Jacques Mattheij or MCS shall not be liable for any damages whatsoever. (What? Are there other languages?)Ī lot of work went into the preparation of this document although I'm afraid I can't guarantee it's correctness. This is definitely not an 'end user' document and the examples and data structures are strongly biased towards the 'C' language. The intended audience of this document are programmers looking for a compact reference text on how zmodem works and what you should know to be able to implement conforming zmodem send and receive software. This file was abstracted from the original zmodem.doc after one night I decided I had enough of all this marketing hype and wanted to know what zmodem was all about without having to wade hip-deep through advertising slogans. README FROM ORIGINAL zmtx-zmrx-1.02.tar.gz In 2015, Mattheij 'deeded' his code to the SyncTerm BBS terminal program, where it served as the basis for that program's ZMODEM code.īecause SyncTerm uses the GPL v2.0 license, that's the license I've assigned to this code base. Mattheij's code is WAY a better starting place for a ZMODEM implementation. The code in this repository is based on Version 1.02 of his code, as obtained from the OpenBSD distfiles repository. In the mid 1990s, Jacques Mattheij wrote a re-implementation of the ZMODEM protocol and released version 1.0 of zmtx-zmrx to comp.os.sources. Though Chuck Fosberg's ZMODEM is way past it's prime from the prospective of the 2020s, there's still a need for a decent ZMODEM implementation for retro machines such as the Atari ST and CP/M machines.Īs mentioned at the end of this README, however, ZMODEM's orignal source code is a product of its time (mid 1980s), and difficult to work with in the modern era. The binaries produced are ZMRX.COM and ZMTX.COM. ![]()
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