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???
06/08/10 06:37
Modified:
  06/08/10 06:38
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 		 #176509 - Preprocessor -vs- Compiler
Responding to: ???'s previous message
Murray R. Van Luyn said:
it appears that previous declarations of the CKCON SFR are not recognised as a 'definition'

You are confusing Preprocessor definitions with Compiler definitions - #ifdef, etc, can only be used with Preprocessor definitions.

With Keil, SFR definititions are Compiler definitions - just like any other variable - that's why they don't work with #if...

As Michael says, you need to use Preprocessor flags if you want to do this...

List of 34 messages in thread
TopicAuthorDate
Conditional SFR Declaration?            01/01/70 00:00      
   ReDef            01/01/70 00:00      
   Preprocessor -vs- Compiler            01/01/70 00:00      
      Thanks...            01/01/70 00:00      
   A Loosely Related Query?            01/01/70 00:00      
      .h file            01/01/70 00:00      
         Yep, that works!            01/01/70 00:00      
            I would not            01/01/70 00:00      
               Good question...            01/01/70 00:00      
            A Rethink...            01/01/70 00:00      
               I don't know ... but            01/01/70 00:00      
                  Agree with Michael            01/01/70 00:00      
                  An overthink.            01/01/70 00:00      
               #including #includes            01/01/70 00:00      
                  totally?            01/01/70 00:00      
                     re: really?            01/01/70 00:00      
   Still no luck...            01/01/70 00:00      
      Like I said before....            01/01/70 00:00      
      HAL            01/01/70 00:00      
      just curious            01/01/70 00:00      
         Nicely workable solution found...            01/01/70 00:00      
            Post vandalised!            01/01/70 00:00      
               What do you mean ...            01/01/70 00:00      
                  I mean this...            01/01/70 00:00      
                     Vandalism Highly Doubted            01/01/70 00:00      
                        Thanks Michael.            01/01/70 00:00      
      Define a new sfr?            01/01/70 00:00      
         RE: This assumes that location 0x8E is always the register            01/01/70 00:00      
         Simplest Solution?            01/01/70 00:00      
            I think HAL is less risky?            01/01/70 00:00      
               HAL very interesting...            01/01/70 00:00      
                  RE: might not be so immediately well understood            01/01/70 00:00      
                     Ah, now I see...            01/01/70 00:00      
                        No, you don't need a HAL header file for each variant!            01/01/70 00:00      

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