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???
02/21/03 21:48
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 		 #39727 - RE: 8255- whats wrong with it ?
Responding to: ???'s previous message
Erik also forgot..

8255 were handy when the eprom databus ate two ports..
but with the advent of 64k flash chips with large amounts of internal ram (p89c668 ,T89c51rd2 and Cygnal and so on)in packages with 4 6 or more i/o ports

There unnecessary.

List of 41 messages in thread
TopicAuthorDate
8255 LED interface            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
      RE: 8255 LED interface            01/01/70 00:00      
         RE: 8255 LED interface            01/01/70 00:00      
            8255 -Rising like a Phoenix            01/01/70 00:00      
            RE: 8255 LED interface / Chris & Penny            01/01/70 00:00      
               RE: 8255 LED interface / Chris & Penny            01/01/70 00:00      
               RE: 8255 LED interface / Chris & Penny            01/01/70 00:00      
            RE: 8255 LED interface            01/01/70 00:00      
      RE: 8255 LED interface            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
      RE: 8255 LED interface            01/01/70 00:00      
         RE: 8255 LED interface            01/01/70 00:00      
            RE: 8255 LED interface            01/01/70 00:00      
            RE: 8255 LED interface            01/01/70 00:00      
               RE: 8255 Surface Mount            01/01/70 00:00      
                  RE: 8255 Surface Mount            01/01/70 00:00      
                     RE: 8255 Surface Mount            01/01/70 00:00      
                        RE: 8255 whats wrong            01/01/70 00:00      
                           RE: 8255 whats wrong            01/01/70 00:00      
                           RE: 8255 whats wrong            01/01/70 00:00      
                           RE: 8255- whats wrong with it ?            01/01/70 00:00      
                              RE: 8255- whats wrong with it ?            01/01/70 00:00      
                                 RE: 8255- whats wrong with it ?            01/01/70 00:00      
                                    RE: 8255- whats wrong with it ?            01/01/70 00:00      
                                       RE: 8255- whats wrong with it ?            01/01/70 00:00      
                                          RE: 8255- whats wrong with it ?            01/01/70 00:00      
                                          RE: 8255- whats wrong with it ?            01/01/70 00:00      
                                             RE: 8255- Erik            01/01/70 00:00      
                                       RE: 8255- whats wrong with it ?, Rob            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
      What can possibly be right with it?            01/01/70 00:00      
         RE: What can possibly be right with it?            01/01/70 00:00      
         RE: What can possibly be right with it?            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      
      ST2221, where? - to Erik            01/01/70 00:00      
         RE: ST2221, where? - to Erik            01/01/70 00:00      
   RE: 8255 LED interface            01/01/70 00:00      

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