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- Newsgroups: comp.sys.amiga.datacomm
- Path: sparky!uunet!convex!darwin.sura.net!spool.mu.edu!uwm.edu!rpi!pooler
- From: pooler@aix02.ecs.rpi.edu (Robert Peter Poole)
- Subject: Re: XPR-Bidirectional
- Message-ID: <80t19hb@rpi.edu>
- Keywords: bidirectional protocals
- Nntp-Posting-Host: aix02.ecs.rpi.edu
- Organization: Rensselaer Polytechnic Institute, Troy, NY
- References: <523@thunder.LakeheadU.Ca>
- Distribution: comp.sys.amiga.datacomm
- Date: Sun, 15 Nov 1992 17:58:31 GMT
- Lines: 35
-
- In article <523@thunder.LakeheadU.Ca> tlbechar@thunder.LakeheadU.Ca (Timothy Lee Bechard) writes:
- >
- > I was wondering if there was any development going on with regards to a
- >bidirectional XPR interface. Looking into most of the ones that are available,
- >I've noticed that they are designed around a single "send" or "recieve"
- >standardized format.
- >
- > Tim Bechard
-
- I think an XPR implementation of BiModem would be an excellent idea! A lot of
- bulletin boards in my home state had implemented BiModem -- some because they
- (the sysops) realized that BiModem made it painless for users to upload as
- much as they downloaded, making quotas nearly obsolete, and others because
- limited connect times meant that a user using a unidirectional protocol such
- as Zmodem had no choice but to upload or download during a session, not both.
-
- I am not sure if BiModem could be effectively implemented in the XPR standard.
- Part of the challenge is to figure out a workaround to all the issues of
- file selection on both ends; part is to figure out how to get the BiModem
- securities worked out in a reasonable fashion. So really, if one wanted to
- implement BiModem, the programmer would have to write a whole suite of
- utilities to automate the process of choosing local and remote files, plus
- some engine (possibly in the XPR format) to actually do the transfers.
-
- BiModem also requires pretty tight timings, since it is implemented on the PC
- (80x86) in highly optimized assembler.
-
- Or maybe there's another bidirectional standard out there that folks would
- prefer to implement?
-
- If John Radigan decides to add many more features after JRComm 2.0, maybe he
- could put BiModem support directly in the program as he did with X/Y/Zmodem.
-
- Rob Poole
- pooler@rpi.edu
-