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???
05/31/02 17:11
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 		 #23704 - RE: any way of reading P2 SFR - serious
My question (answer will follow) -
When would the P2 pins NOT equal P2 SFR ?

When external device is driving pins low.

It is illegal for the external device to drive pins high, if the SFR is low. So, reading the pins and forcing pins used for input high should do what you want... if it doesn't then your design is in violation of the rules.

List of 32 messages in thread
TopicAuthorDate
any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?erik            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?,donald            01/01/70 00:00      
RE: any way of reading P2 SFR ?,donald            01/01/70 00:00      
RE: any way of reading P2 SFR ?,donald            01/01/70 00:00      
RE: any way of reading P2 SFR ?,donald            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?,donald            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?,donald            01/01/70 00:00      
RE: any way of reading P2 SFR ?peter            01/01/70 00:00      
RE: any way of reading P2 SFR ?peter            01/01/70 00:00      
RE: any way of reading P2 SFR ?peter            01/01/70 00:00      
RE: any way of reading P2 SFR ?peter            01/01/70 00:00      
RE: any way of reading P2 SFR ?, Peter            01/01/70 00:00      
RE: any way of reading P2 SFR ?, Peter            01/01/70 00:00      
RE: any way of reading P2 SFR ?, Erik            01/01/70 00:00      
RE: any way of reading P2 SFR ?, Erik            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR - serious            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?,peter#2            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      
RE: any way of reading P2 SFR ?peter#2            01/01/70 00:00      
RE: any way of reading P2 SFR ?            01/01/70 00:00      

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