On Tue, 24 Apr 2007, Jim Leonard wrote:
wdg3rd at
comcast.net wrote:
The 6300 (and 6300 Plus) were designed and built
by Olivetti, probably by
the same engineers who used to keep Mussolini's trains running on time.
Their DB-25 video connector is the only reliable way ever discovered to
break a Radio Shack Daisy Wheel Printer II (aside from tossing the beast
into a smelter). Convergent did the 7300 and 3B1 Unix PCs (vastly superior
machines in my arrogant opinion, but I'm partial to just about any MC68k
series systems that didn't come from Cupertino).
I don't understand the line about the db25 monitor connector being able to
break a printer. Could you explain?
If memory serves, the monochrome monitor on the 6300 was powered from
15V on two pins on the DB25 female connector on the video card.
Plugging your parallel printer cable into the video card would do nasty
things to the printer.
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology
http://sturgeon.css.psu.edu/~mloewen/Oldtech/