Re: [Simulavr-devel] [patch #7034] display frequency in fool-proof way

[address@hidden]

On Wed Dec 23 10:36 , Klaus Rudolph  sent:

>address@hidden schrieb:
>> On Wed Dec 23  2:39 , Klaus Rudolph  sent:
>> 
>>> Petr Hluzín schrieb:
>>>> 2009/12/22 Knut Schwichtenberg address@hidden>:
>>>>> In one of my previous projects I used a 2^22Hz crystal. The
>>>>> frequency is 4.194304MHz. So, if there is an alternative input with
>>>>> floating point is implemented 1Hz as the last digit is necessary.
>>>> The discussion is about diagnostic _output_ in main(). Parsing users'
>>>>  frequency input is not altered by my patches.
>>>>
>>> The original implementation has no idea of frequencies. It simply uses
>>> relative values for all the members of one simulation set. It makes no
>>> difference to use the values 4, 8, 12 or a set of 4000000, 8000000,
>>> 12000000. The unit is only in the users head, the values in the
>>> simulation are only relatives to the others.
>>>
>>> Using higher precision vars in the simulator only slows down the simulation.
>> 
>> A good point for single-cpu simulations.
>
>A single cpu simulation needs no frequency value. :-)

Alas, we're wrong.
Even a single cpu can use four frequency sources at once:
A crystal that determines the MIPS.
The watchdog.
A crystal for the real time clock.
An RC oscillator that times flash and EEPROM writes.

---
Michael Hennebry
address@hidden
"War is only a hobby."


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