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Ditto. How is any bare metal processor not "real-time"? Unless you
integrate a badly made OS into your firmware yourself, it's as
real-time as it gets. The R4F is only one of the bigger real-timey
processors, as opposed to microcontroller? Or is there a context
where real-time has a very specific meaning other than it's not
impeded by a jittery scheduler?<br>
<br>
That aside, I find it slightly amusing that the stm32F7 or H7 or
whichever it was that has an out-of-order pipeline and
considerable instruction + data cache and lots of single-cycle
float OPs that might give the first Pentiums a run for their
money, is also still considered to be a "microcontroller" :D<br>
<br>
I wonder how many football stadiums such a thing would fill in
1960's tech.<br>
<br>
<br>
Am 22.02.2019 um 02:01 schrieb Declare Update:<br>
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cite="mid:7F0A9096-CE1E-4767-9A5A-81D9F9043E14@gmail.com"
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Brian, I had never considered that an M4 might not be “real time”.
what do you mean by this? I found this <a moz-do-not-send="true"
href="https://www.design-reuse.com/articles/26106/cortex-r-versus-cortex-m.html">https://www.design-reuse.com/articles/26106/cortex-r-versus-cortex-m.html</a> but
it didn’t clear it up much.
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<div>Cheers,</div>
<div>Chris<br>
<br>
<div id="AppleMailSignature" dir="ltr">Sent from my iPhone</div>
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On Feb 21, 2019, at 6:44 PM, Brian Willoughby <<a
moz-do-not-send="true" href="mailto:brianw@audiobanshee.com">brianw@audiobanshee.com</a>>
wrote:<br>
<br>
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<div dir="ltr"><span>Interesting. I wouldn’t call the
Cortex-M4 a “real-time” MCU. Embedded, certainly, but not
Real-Time. I think you’d have to look at the Cortex-R4F
for real-time.</span><br>
<span></span><br>
<span>I’m still (sort of) waiting for the open source
community to support either the TMS320 DSP family or the
SHARC DSP family. The Aleph was Blackfin, but that’s only
about half way to SHARC or TMS320 DSP performance.</span><br>
<span></span><br>
<span>Brian</span><br>
<span></span><br>
<span></span><br>
<span>On Feb 21, 2019, at 12:47 PM, <a
moz-do-not-send="true" href="mailto:sleepy_dog@gmx.de">sleepy_dog@gmx.de</a>
wrote:</span><br>
<blockquote type="cite"><span>may be of interest for some:</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>There is a discovery board for
$ 69,- with this new STMicro processor, 512MB RAM, audio
codec, SPDIF connectors and other stuff.</span><br>
</blockquote>
<blockquote type="cite"><span>The processor has a dual core
ARM Cortex A7 @ 650 MHz which can run Linux, and one
Cortex M4 with FPU @ 209 MHz, LCD TFT controller...</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>Lots of audio projects
shenanigans could be done with that - which is probably
also true for the raspberry pi family - but having a
real-time MCU (the M4) also integrated seems nice for
some stuff.</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span><a moz-do-not-send="true"
href="https://www.cnx-software.com/2019/02/21/stmicro-stm32mp1-cortex-a7-m4-mpu/">https://www.cnx-software.com/2019/02/21/stmicro-stm32mp1-cortex-a7-m4-mpu/</a></span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<span></span><br>
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