Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Bob Eager Newsgroups: comp.misc Subject: Re: how dot matrix printers placed text Date: 8 Jul 2024 21:55:36 GMT Lines: 23 Message-ID: References: <668b38fd$0$1439840$882e4bbb@reader.netnews.com> <87le2bhdrl.fsf@enoch.nodomain.nowhere> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net nv3NFGk4rpoVrhkgFr34nAd2BFslKNSr566yv1weFdGfGycz5I Cancel-Lock: sha1:rh6Sb6zizellEaKMIecnFI3V1+I= sha256:jPlOxWjOPjWXxDaeUyvBD/RozxocNr2T4YksQEiRtAw= User-Agent: Pan/0.145 (Duplicitous mercenary valetism; d7e168a git.gnome.org/pan2) Xref: csiph.com comp.misc:25214 On Mon, 08 Jul 2024 17:49:08 -0400, Dan Espen wrote: > So I looked at the print train and found the order characters appeared > on the train. Then I wrote an assembler program using data chaining to > print 100 lines with one I/O command and loop. The characters were in > the same order as the print train so all the magnets could fire at once. > > When we ran it, the printer produced a loud screeching sound, unlike the > sounds it made during regular printing. The operators were pretty happy > with their new toy. The only problem is it cleaned the printer too fast > so the fun didn't last long enough. That could cause an overload on some printers. You might like this story. http://www.bobeager.uk/anecdotes.html#fuse -- Using UNIX since v6 (1975)... Use the BIG mirror service in the UK: http://www.mirrorservice.org