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???
02/01/08 06:51
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 		 #150142 - get the 8042
Responding to: ???'s previous message
Richard Erlacher said:
In this case, I want 7-bit ASCII output in parallel, strobed, data format. It only requires that one substitute a 5-6 line routine for a 25 line one that talks to the I2C hardware. It seems to me that a little 20-pin part could handle this just fine, or, for that matter, a 16-pin part.


Get the 8042 - it's ready to use. You just need to excavate it from an old PC motherboard, from the '286/'386 era.

IMHO you can rip off some 20 unimportant pins if it makes you nervous that it is DIP40... :-)

JW


List of 33 messages in thread
TopicAuthorDate
PC Keyboard interface Has anyone done this ?            01/01/70 00:00      
   basicly code works            01/01/70 00:00      
   timertick timeout not included            01/01/70 00:00      
   I wonder ...            01/01/70 00:00      
      dont know before, but now available            01/01/70 00:00      
      it is too bad search is temporarily disabled            01/01/70 00:00      
         Google still works            01/01/70 00:00      
            Really? How does that work?            01/01/70 00:00      
               Spiders and Robots            01/01/70 00:00      
                  I did that, and it promotes humility, believe me            01/01/70 00:00      
               try this for example            01/01/70 00:00      
                  Debouncing? Why?            01/01/70 00:00      
                     de-spiking inputs            01/01/70 00:00      
                        Oh yes there is!            01/01/70 00:00      
                           debouncing            01/01/70 00:00      
                        that won't work ... and that's now how it works            01/01/70 00:00      
                  8052.com PS2 code            01/01/70 00:00      
                     Debouncing            01/01/70 00:00      
               Google trick            01/01/70 00:00      
               RE: I must have missed something along the way.            01/01/70 00:00      
   well, at least            01/01/70 00:00      
      at least one reason for "dissapearing"            01/01/70 00:00      
         Oh yes there is!            01/01/70 00:00      
   Why bother?            01/01/70 00:00      
      not serial for serial...            01/01/70 00:00      
         Exactly!            01/01/70 00:00      
            I guess you want a "bridge" then            01/01/70 00:00      
            get the 8042            01/01/70 00:00      
               it isn't that simple.            01/01/70 00:00      
                  socket            01/01/70 00:00      
                     it fits the socket, and the board is wire-wrapped            01/01/70 00:00      
                  isn't this replacement?            01/01/70 00:00      
                     Gee ... that's where I got 'em last time ...            01/01/70 00:00      

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