Subj : Retro DOS
To : DIGITAL MAN
From : Dumas Walker
Date : Wed May 21 2025 09:21 am
> > Yep, IIRC, Zmodem started as a DOS transfer protocol. There is DSZ (the
> > official one) and a few other DOS-compatable Zmodem executables, like
> > pdzmodem.
> ZMODEM actually started as a file transfer tool/protocol for UNIX, not DOS (an
> incremental improvement over YMODEM by Chuck Forsberg) - the program was calle
> 'sz' (for send zmodem) and 'rz' (for receive zmodem) and then later Chuck
> created DSZ (DOS Send ZMODEM, which does both the send and receive in the same
> executable). Then FDSZ (FOSSIL DSZ) and GSZ (Graphical SZ for DOS) and other
> variants (proYamm and what not). RIP Chuck.
LOL, good to know. My first encounter with it was on DOS so it just never
occurred to me that it actually started on *NIX. ;)
