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???
10/21/09 17:08
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 		 #169946 - Of course not
Responding to: ???'s previous message
Garry Motter said:
Your biggest problem here is that when you return from the interrupt, you have nowhere to go. Recall that your code will jump to the next instruction after the one that was interrupted. So instead of:
Save This Code
   MOV   DPTR,#0000
   MOV   SBUF,DPH
   JMP   $
you would do better with:
Save This Code
   MOV   DPTR,#0000   ;initialize data
   MOV   SBUF,DPH     ;transmit hi byte
CHURN:
   JMP   $            ;wait for tx interrupt
   JMP   CHURN        ;upon return, go wait for next interrupt

That would mean that if any interrupt came during any normal JMP instruction the jump would not be made and the following code executed instead.

List of 26 messages in thread
TopicAuthorDate
Is this Code Correct for 16 Bit Serial Transmission            01/01/70 00:00      
   No.            01/01/70 00:00      
      Sir            01/01/70 00:00      
         Insert program code            01/01/70 00:00      
            How to post legible source code            01/01/70 00:00      
            Who would bother to read uncommented code?            01/01/70 00:00      
               Worse than that            01/01/70 00:00      
         So you will understand            01/01/70 00:00      
   what code?            01/01/70 00:00      
      Program with comments            01/01/70 00:00      
         The first after it            01/01/70 00:00      
            Second after it.......            01/01/70 00:00      
               Simulators            01/01/70 00:00      
               Remove all the silly code lines!            01/01/70 00:00      
                  Comments first, then discussing intention/reality            01/01/70 00:00      
                     Careful Commenting Catches Cruddy Coding!            01/01/70 00:00      
            So where did all the comments go?!            01/01/70 00:00      
               To achieve 16 bit communication            01/01/70 00:00      
                  Exactly what was your "target"?            01/01/70 00:00      
                  How?            01/01/70 00:00      
            Return from interrupt            01/01/70 00:00      
               Of course not            01/01/70 00:00      
                  But how it could be different            01/01/70 00:00      
                     Any more information required            01/01/70 00:00      
                        As previously stated            01/01/70 00:00      
                           and summarised...            01/01/70 00:00      

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