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???
06/04/03 20:23
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 		 #47543 - Warning for C users (especially Keil)
Responding to: ???'s previous message
A very common way for 'C' programmers to implement state machines (specifically, Finite State Machines, FSMs) is by the use of tables of function pointers.

Keil C51 imposes a number of very important limitations to function pointer usage on the 8051
I strongly suspect that the same applies to other 8051 'C' compilers.

Before using function pointers in Keil C51, it is essential that you carefully read the following:
Application Note 129: Function Pointers in C51
BL51: CALL TREE USING POINTERS TO FUNCTIONS
C51: PROBLEMS WITH FUNCTION POINTERS OVERWRITING VARIABLES

For other 8051 'C' compilers, be very sure to understand all the issues and/or limitations with their function pointer implementations


List of 25 messages in thread
TopicAuthorDate
State Machine Design for Time Slicing            01/01/70 00:00      
   Warning for C users (especially Keil)            01/01/70 00:00      
      RE: Warning for C users (especially Keil)            01/01/70 00:00      
         RE: Warning for C users (especially Keil)            01/01/70 00:00      
      RE: Warning for C users (especially Keil)            01/01/70 00:00      
      RE: Warning for C users (especially Keil)            01/01/70 00:00      
   RE: State Machine Design for Time Slicing            01/01/70 00:00      
      RE: State Machine Design for Time Slicing            01/01/70 00:00      
         RE: State Machine Design for Time Slicing            01/01/70 00:00      
   RE: its time sharing machine            01/01/70 00:00      
      RE: its time sharing machine            01/01/70 00:00      
         firstly i have to ask this            01/01/70 00:00      
            RE: firstly i have to ask this            01/01/70 00:00      
            RE: firstly i have to ask this            01/01/70 00:00      
               RE: firstly i have to ask this            01/01/70 00:00      
                  RE: firstly i have to ask this            01/01/70 00:00      
            RE: firstly i have to ask this            01/01/70 00:00      
         RE: its time sharing machine            01/01/70 00:00      
            RE: its time sharing machine            01/01/70 00:00      
   RE: State Machine Design for Time Slicing            01/01/70 00:00      
      RE: State Machine Design for Time Slicing            01/01/70 00:00      
   Some questions            01/01/70 00:00      
      RE: Some questions            01/01/70 00:00      
      RE: Some questions            01/01/70 00:00      
         thanks            01/01/70 00:00      

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