🚀 go-pugleaf

In article <1991Apr5.164637.23076@pegasus.com> richard@pegasus.com
>Has anyone managed to send to a Laserjet III (with Adobe PostScript cart.)
>via the parallel port and listen on the serial port?

While I'm not a HP design engineer, I have looked at the HP interface board
on a somewhat casual basis (doesn't that qualify me as a expert 8-}...).

The interface module for the HP III & HP IIP is basically a plug in module.
It appears that this module is controlled BY the printer controller which
selects what available protocool to use (serial, parallel, appletalk), then
that port is turned on.  It doesn't appear that it is even possible to 
kludge up a way to turn the par & ser 'on' at the same time, without
serious hardware hacking.
It may be easier to make a modification/addition/ hardware hack that
adds something like a 8250 in parallel to the laser output lines to the
interface board, then be sure only to use the output line of the 8250
to listen....
al



-- 
Al. Michielsen, Mechanical & Aerospace Engineering, Syracuse University
 InterNet: amichiel@rodan.acs.syr.edu  amichiel@sunrise.acs.syr.edu
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