Re: 8051 architecture


"Chris Hills" <chris@xxxxxxxxxxxx> wrote in message
news:OP3BAbCuT6sEFA60@xxxxxxxxxxxxxxxxxxxxxxx
In article <1152617974.39707.0@xxxxxxxxxxxxxxxxxxxx>, Tom Lucas
<news@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> writes
"Chris Hills" <chris@xxxxxxxxxxxx> wrote in message
news:i93qMbBtP4sEFAcv@xxxxxxxxxxxxxxxxxxxxxxx
In article <12b6kuc9ikdqa6d@xxxxxxxxxxxxxxxxxx>, Meindert Sprang
<ms@xxxxxxxxxxxxxxxxxxxxxxxxx> writes
<eerobert@xxxxxxxxx> wrote in message
news:1152598467.894100.285310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Why 8051 need 2 clock cycle for 1 system state?
<snip>

However, I think it more likely that he wants to know why two clocks
are
required to do one instruction but this in itself is not too obvious
if
you only know the processor as a black box that runs code. Granted, he
should have spent more time googling but using what search string if
he
doesn't know about fetch-decode-execute and doesn't have great
English?

Then he finds stuff in his local language or shock horror, asks some
one
else locally.

Perhaps he has noone to ask. When I first started out in industry then I
knew my tutors in uni and the engineers I worked with and that was it.
It takes time to build a network. There may also not be anything in his
own language and there is always much more English information available
anyway.

I am also aware that after my mini-rant I still haven't given much
help
to the OP but I don't know a lot about the 8051 and besides, it was a
pointless question ;-)

No it was not entirely pointless... however it is like asking why is
DNA
a twin helix. If your command of English is poor or the one line above
is the total sum of your knowledge there is not wya you will
understand
the answer.

I think that it a bit insulting toward the OP - he may be able to work
with the answer and get a good translation. My French is pretty
rudimentary but given a French text, a dictionary and a healthy dose of
Google then I think I could work it out.

I'd discussed in other threads how intimidating this group is for first
time posters and IMHO the OP had a legitimate question which other
people, myself included, would have been interested to see the answer
to. All he's received is abuse and he'll go away none the wiser. I had a
bit of a google to see if I could find the answer and there were plenty
of hits discussing the clocks/cycle requirements of the 8051 but nothing
saying why it was the case. It sounds like the sort of question that
needs a experienced 8051 veteran to answer and where better to ask the
question than here?


.

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