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m Added references to Omen Technology published software and added photo of product disks for ZComm and DSZ. Tag: use of deprecated (unreliable) source |
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Originally, he wrote a program for Unix called rbsb (receive batch / send batch) which used block 0 to transmit a file's name, and optionally date and time, since [[Ward Christensen]] designed [[Xmodem]] to start at block 1, leaving block 0 available. Christensen suggested Forsberg call his protocol [[YMODEM]] because it was "one better" than Xmodem. Forsberg created the program ''YAM'', which in traditional Unix nomenclature stood for ''Yet Another Modem'' after "Modem.asm" the original version of Xmodem released by Christensen in the CP/M User's group in 1977.
Forsberg most recently resided in [[Portland, Oregon]], prior to his death. He ran data transmission software company Omen Technology which he founded in 1984.<ref name="autogenerated1">{{cite web |url=http://www.omen.com/about.html |title=About Omen Technology |accessdate=2012-02-16 |url-status=bot: unknown |archiveurl=https://web.archive.org/web/20150915193210/http://www.omen.com/about.html |archivedate=September 15, 2015 }}</ref> Omen Technology published software tools such as ZComm (a terminal-based communications program that included the ZMODEM-90 file transfer protocol) and DSZ.<ref name="autogenerated">{{cite web | url=https://en.wikipedia.org/wiki/File:OmenTechnology-ZComm-DSZ-SoftwareDisks.jpg|title=Image of software diskettes for ZComm and DSZ, software products published by Omen Software (circa 1990)}}</ref> He was an [[amateur radio operator]] (call sign WA7KGX)<ref>{{cite web | url = http://wireless2.fcc.gov/UlsApp/UlsSearch/license.jsp?licKey=862831 | title = Amateur License – WA7KGX – FORSBERG, CHARLES A | accessdate = 2012-02-16}}</ref> and a licensed aircraft pilot.<ref name="autogenerated1"/>
[[File:OmenTechnology-ZComm-DSZ-SoftwareDisks.jpg|thumb|right|alt=Diskette images for Omen Technology's ZComm and DSZ products (circa 1989-1990)|Diskette images for Omen Technology's ZComm and DSZ products (circa 1989-1990)]]
[[Jesse Walker]] cited Forsberg as a participant in WMAS, a [[pirate radio|pirate radio station]] at [[Western Military Academy]] in [[Alton, Illinois]].<ref>{{cite book
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