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???
02/13/08 07:00
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#150702 - "bible" time?
Responding to: ???'s previous message
Stephen Thudium said:
What is the minimum time needed to service a simple ISR and then return to the main program?

ISR = Interrupt Service Routine - so you don't "service" an ISR!
An ISR is the routine that services an Interrupt!

You should be able to work this out from the description of how an interrupt works in the so-called "bible" for the 8051:



Chapter 1 - 80C51 Family Architecture:
http://www.nxp.com/acrobat_d...ARCH_1.pdf

Chapter 2 - 80C51 Family Programmer's Guide and Instruction Set:
http://www.nxp.com/acrobat_d...UIDE_1.pdf

Chapter 3 - 80C51 Family Hardware Description:
http://www.nxp.com/acrobat_d...WARE_1.pdf


List of 12 messages in thread
TopicAuthorDate
Minimum ISR time            01/01/70 00:00      
   "bible" time?            01/01/70 00:00      
      details            01/01/70 00:00      
   re-expalin            01/01/70 00:00      
   Re: Minimum ISR time            01/01/70 00:00      
   what simple ISR?            01/01/70 00:00      
      You're right, it is bloody C            01/01/70 00:00      
         C and ISRs            01/01/70 00:00      
            Know thy tools            01/01/70 00:00      
               'using' can be counterproductive in SDCC            01/01/70 00:00      
         ISRs in C            01/01/70 00:00      
            Good point            01/01/70 00:00      

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