Hello Nicholas, > [COPLIN, Nicholas.] So the feedback scheme is possible, but > would require > four-bit logic? Well, yes, I believe this should work. > btw, do I have it correct in that normally port A does the > driving, port B > is read? Is there any *danger* if with interrupts disabled I > reverse this > (first making both inputs). No, this shouldn't be a problem at all (but some emulators might have problems with this). Well, remember even the fact that when moving the joystick, a GND is connected to an output (CIA port A!). Mit freundlichen Grüssen, Spiro Trikaliotis. -- ------------------------------------------------------------------------ Spiro R. Trikaliotis Otto-von-Guericke-Universitaet Magdeburg Phone: +49 (0)391 67-12560 Fakultaet fuer Informatik Fax: +49 (0)391 67-11161 Institut fuer verteilte Systeme EMail: spiro@ivs.cs.uni-magdeburg.de Echtzeitsysteme und Kommunikation http://ivs.cs.uni-magdeburg.de/EuK/ PF 4120, 39016 Magdeburg ------------------------------------------------------------------------ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.
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