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From: Don Y <blockedofcourse@foo.invalid>
Newsgroups: sci.electronics.design
Subject: Re: OT: ARM makes too much noise in my view.
Date: Fri, 25 Oct 2024 15:52:45 -0700
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On 10/25/2024 3:09 PM, Uwe Bonnes wrote:
> Arm has an enourmous debug infrastucture. Each risc implemenation
> nearly cook there own soup. A core without debug infrastructure is
> less attractive...

They also have a boatload of predesigned/debugged IP to offer
to their licensees.  And, a broad base of developers and fabs
already experienced, there.

The trend is pretty obvious -- MCUs are moving more and more
towards the market that was previously the domain of CISC CPUs.
The needs of the ever-shortening (per unit-feature) development
cycle make it clear that the processor has to do more for the
developer.  Witness the number of "memory protection" schemes
that keep popping up.  The more fine-grained they are (i.e.,
don't just protect TEXT vs DATA but, rather, *me* from *you*!),
the more advantageous to the developer.

[Think PoLP, KISS, encapsulation, information hiding, etc.
Even if you are the sole developer, being able to protect
one task from the actions of another is a HUGE reduction
in debug time:  "Hmmm, why this bus error?  What the hell is
X trying to do in Y's domain??"  Trust me, it is *so* much
easier to get a finished piece of code when it is the ONLY
thing you have to worry about!]