I think it's not EE, but oh wel, who am I?

The clock speed isn't the only thing. Think about compiler optimization,
other bit size operators and variables, different opcode set, processor
cache, opcode multiplier and probably a list the size of the Intel
headquarters with other changes between those two. I think your
best bet is to time the loop and in some sort of fashion use a timer
to mimic that delay operation. These baby's aren't as predictable
I'm afraid.


Regards,

Claudio

-----Oorspronkelijk bericht-----
Van: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]Namens Levente Molnar
Verzonden: donderdag 19 september 2002 17:48
Aan: PICLIST@MITVMA.MIT.EDU
Onderwerp: [EE-OT] Delay code on INTEL type processors


Dear PIClisters,

I have seen, that there are Delay Code Generators for PIC and/or SX
microcontrollers.
What do you think, for an Intel type processor, taking in consideration its
frequency, what else is meaningful to achieve a certain amount of time delay
by software, (eg. for(i=0; i<delay; i++); ), using Borland C++?
I am trying to adapt a time delay obtained by the loop for(i<0; i<150; i++)
appropriate for a 25MHz 386 embedded CPU, to achieve the same amount of time
delay for a 166MHz 586 embedded CPU.

Thank you in advance for any hints and suggestions,

Regards,

Levente

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