Hi,

I am using RB4-RB6 inputs to detect changes to a couple of Normally closed
switches and raise an interrupt. This technique I have used successfully in
the past, But I also have a number of Normally Open switches on RC0 - RC5
that I want to trigger a RB interrupt too. What I am proposing is to add a
1N4148 diode pointing to the RB input from each of the RC switches in DDL
style - Is this likely to work? What should I watch for?




             +5v
            --+-- 
              |
              |
              \
              / Pullup R
              \
              /
              |
              |            NO Switch
  To Pic  ----+-----------O  O--------+
  RC Input    |                       |  
              |                       |
            ----                      |
             \/                       |
            ----                     ---
              |                      GND 
              |  
   To Pic   --+
   RB Input


-Jim





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