[comp.sys.atari.st] Servicing interrupts from printer port BUSY line ?

jeremym@syma.sussex.ac.uk (Jeremy Maris) (09/14/89)

I am trying to read non-printer generated interrupts on the ST parallel
port
I'm trying to generate the interrupts from a button box attached to
the parallel port, with button presses producing a short (20ms) pulse
on the busy line (11).
I'm fairly sure the interrupt service routine is correct, but I don't
seem to be seeing any interrupts.

Anyone have any experience in generating interrupts in this nonstandard
way on prn: and have any thoughts about why I'm not seeing them.

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Jeremy Maris, Experimental Psychology, Sussex University, Falmer, Brighton  
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jeremym@syma.sussex.ac.uk (Jeremy Maris) (09/14/89)

I found the problem - a bad connection!

Jeremy
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Jeremy Maris,Experimental Psychology,University of Sussex,Brighton,England.
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