🚀 go-pugleaf

In article <root.824358086@jedi> cdewick@jedi.apana.org.au (Craig Dewick) writes:
>From: cdewick@jedi.apana.org.au (Craig Dewick)
>Subject: using parallel port on 501-1203 ALM-2 card
>Date: 15 Feb 1996 15:22:25 +1100


>I've recently acquired a 501-1203 ALM-2 16-port serial multiplexer card,
>and one of the features of this card is that it also has a parallel
>printer port. 

>For want of experimentation, I've been trying to send files out via this
>port to my printer just using 'cat' and output redirection. Something as
>simple as 'cat somefile > /dev/mcpp0' should work as far as I can tell,
>however it appears to be producing no output since the printer doesn't
>respond at all, and the process will just sit there and hang.

>Most times I cannot kill the process, even when I send it a SIGKILL
>signal. This suggests the process is blocking on i/o, but I'm not sure how
>to approach the problem from the software side of things. 

>Of course I should be printing via the line printer daemon, but if simple
>access to the port fails I expect using 'lpr' will too. 

>I'll be checking out the signals on the parallel connector on the card
>when I have the time to see what happens when I try to print something. 
>This might give a clue as to whether it's a hardware or a software
>misnomer. 

>If anyone has experience working with the printer port on ALM-2 cards I'd
>be interested to know if you've had any problems and how you were able to
>solve them. In the meantime, I'll keep trying to work out what's wrong... 

>Regards,

>Craig.
>-- 
>             Craig Dewick. Send email to 'cdewick@jedi.apana.org.au'
>                 The Core Matrix Foundation - Sydney, Australia
>                        http://jedi.apana.org.au/core.html
> Always striving for a secure long-term future in an insecure short-term world