ZMODEM
11–20 of 103 posts
Re: ZMODEM
#12This submission is a ploy by the NSA and advertisers to further refine their demographic slot of "old hackers".
Kermit, zmodem, bbs, baud.
South Park's Member Berries are in full force here.
CoCo forever!
Re: ZMODEM
#13Ahh, the BBS days. 513 represent!
Re: ZMODEM
#14> Introduced 1986; 30 years ago Now I feel old. I remember when this was new and clever. Made downloading from BBS's much nicer over XModem. At 2400 baud or whatever was current then!
There were a bunch of different something-Modems around that time that fiddled around with window sizes, retransmission approaches, batch transmission, and so forth. In case anyone is wondering, there was a YModem (also developed by Forsberg) in addition to XModem and ZModem along with various variants.
I even interned for a small company one summer that implemented one of these for a timesharing service using Prime minis.
Re: ZMODEM
#15I remember when we did our own zmodem implementation so we could bypass download limits. Large BBS' at the time had restrictions on how many KB you could download in a day, but they only counted completed file transfers. ZModem had a provision for restarting failed transfers, so it was normal for a transfer to fail before completion (call waiting!) and the user to come back later to finish it. Our implementation could receive the last packet successfully, then push the transfer back a few blocks (retries) and fail.
Shout out to the 519!
Re: ZMODEM
#16Who remembers IceZmodem? A backwards compatible protocol that allowed you to play Tetris or listen to .MOD files while downloading... and if you were downloading from an IceZmodem capable host, you'd even get increased download speeds!
Re: ZMODEM
#17The sheer joy of the rare sights of decent transfer rates and counting every single 'block' progress. Wew!
Re: ZMODEM
#18Who remembers IceZmodem? A backwards compatible protocol that allowed you to play Tetris or listen to .MOD files while downloading... and if you were downloading from an IceZmodem capable host, you'd even get increased download speeds! http://textfiles.com/computers/DOCUMENTATION/izm-q&a.txt
> IceZmodem (IZM) v1.1 Protocol-Chat,DOS,Editor,MORE!
> IceSoft Software presents IceZmodem, an amazing
> new Zmodem file transfer protocol with 100%
> standard Zmodem compatibility and many enhancements.
> While transferring files you can chat with the
> remote user, shell to DOS, edit a text file,
> play Digital MOD file Music, or play games.
> You can even get 2 pages of system information about
> the remote computer. Sysops can view the dropfile
> to find out who is using the BBS. It has one of the
> best status displays ever and includes a Screen
> Saver. TurboTrans, a Zmodem speed booster, has
> helped to get 99% efficiency on some file
> transfers.
> This amazing protocol simply has to be seen to
> be believed! Supports Sound Blaster or DACs
> for music.
Re: ZMODEM
#19I remember when we did our own zmodem implementation so we could bypass download limits. Large BBS' at the time had restrictions on how many KB you could download in a day, but they only counted completed file transfers. ZModem had a provision for restarting failed transfers, so it was normal for a transfer to fail before completion (call waiting!) and the user to come back later to finish it. Our implementation coul…
That's awesome :) I would have loved to get my hands on that version.
Re: ZMODEM
#20Kermit was in the same space as Zmodem. I remember it fondly, as they were very progressive around "open source" way back in the early 90's, and probably earlier. They accepted what was essentially a "pull request" over USENET discussions forums from me to add a feature. http://www.kermitproject.org/ckfaq.html
That's pretty cool, what feature did you add?