Re: Universal grammar

LEE Sau Dan wrote:
"Paul" == Paul J Kriha <paul.nospam.kriha@xxxxxxxxxxxxxxx> writes:


Paul> LEE Sau Dan <danlee@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
Paul> message news:87y7qizuj9.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >>>>> "Hans" == Hans Aberg <haberg@xxxxxxxxxx> writes:
>>
>> >> These are two topics for a further discussion, but consider
>> >> that I really understand little of binary computers, you
>> might >> lose your nerves with me, trying to explain your math
>> prover to >> a computer moron of my caliber.
>>
Hans> Only you can improve your computer skills. Here is how a
Hans> computer works: At startup time, it gets a signal called an
Hans> "interrupt",
>> That's not a interrupt. That a _reset_ signal.

Paul> Which is just one of the hardware interrupts that can be
Paul> sent to a CPU.

That's a hardware _signal_, but usually not considered an interrupt:

1) RESET cannot be caught or masked.
2) INTERRUPT is caught, handled and then the system resumes from it.
RESET abruptly brings to the whole system to a "start" state and
never resumes from where it left off.
3) INTERRUPT is used by peripherals to catch the attention of the CPU,
asking CPU to do something for them quickly.
RESET is usually raised by operators (often human) to bring the
system to a "start" state.

Actually, the power-up sequence of a CPU chip(set) needs not involve
an external signal, even though one there is usually an input pin
for such so as to coordinate the power-up sequence with other hardware.

On some CPU chip(set)s the action following a RESET signal after
a complete power-up sequence is different from that of the initial
power-up.

Tak
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