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Re: Setting architectural features in stone

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On 2016-08-03 3:52 AM, Quadibloc wrote:
> On Tuesday, August 2, 2016 at 7:39:54 PM UTC-6, Quadibloc wrote:
>> On Tuesday, August 2, 2016 at 6:09:36 PM UTC-6, Walter Banks
>> wrote:
>>
>>> Perhaps not generally available. The eTPU used in engine
>>> controllers is 24 bit data word and sells in the general area of
>>> 20M copies a year. (It is BTW supported with a C compiler)
>>
>> Google tells me that it's a processor usually found as part of an
>> SoC including a more conventional processor. Of course, code still
>> needs to be written for it.
>
> If I'm looking at the right machine - the eTPU being Freescale's
> Enhanced Time Processing Unit, an auxilliary processor included with
> their signal processor chips so as to handle interrupts and generate
> output analog signals without burdening the main CPU - while its
> data memory is 24 bits wide, it gets its instructions from memory
> that is 32 bits wide.
>
> John Savard
>
It is a dual processor that does the detail controlling of the I/O pins.
That control the engine. It is paired with a powerPC derivative (super
set) that is the host processor. The host establishes set points and
the eTPU does the actual control at a reasonably high level managing
timing doing pid loops and data gathering.

Other eTPU uses that I have been involved in are small scale process
control and instrumentation.

The eTPU as you correctly stated is 24 bit data paths and 32 bit
instruction paths. I worked on the eTPU ISA and wrote the code generator
for the C compiler that is used in most applications.

w..

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Re: Setting architectural features in stone Noob <root@127.0.0.1> - 2016-08-01 11:18 +0200
  Re: Setting architectural features in stone Ivan Godard <ivan@millcomputing.com> - 2016-08-01 09:26 -0700
  Re: Setting architectural features in stone anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-01 15:48 +0000
  Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-01 10:13 -0700
  Re: Setting architectural features in stone Walter Banks <walter@bytecraft.com> - 2016-08-02 20:09 -0400
    Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-02 18:39 -0700
      Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-03 00:52 -0700
        Re: Setting architectural features in stone Walter Banks <walter@bytecraft.com> - 2016-08-03 06:45 -0400
      Re: Setting architectural features in stone David Brown <david.brown@hesbynett.no> - 2016-08-03 15:02 +0200
    Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-02 19:37 -0700
      Re: Setting architectural features in stone Noob <root@127.0.0.1> - 2016-08-03 10:52 +0200
        Re: Setting architectural features in stone Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-08-03 11:09 +0100
        Re: Setting architectural features in stone Keith Thompson <kst-u@mib.org> - 2016-08-03 08:51 -0700
        Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-03 09:36 -0700
          Re: Setting architectural features in stone George Neuner <gneuner2@comcast.net> - 2016-08-03 20:30 -0400
          Re: Setting architectural features in stone Noob <root@127.0.0.1> - 2016-08-04 13:06 +0200
            Re: Setting architectural features in stone Bruce Hoult <bruce.hoult@gmail.com> - 2016-08-04 06:39 -0700
              Re: Setting architectural features in stone nmm@wheeler.UUCP (Nick Maclaren) - 2016-08-04 17:40 +0000
      Re: Setting architectural features in stone nmm@wheeler.UUCP (Nick Maclaren) - 2016-08-03 09:40 +0000
        Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-03 09:50 -0700
          Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-03 10:14 -0700
            Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-04 06:11 -0700
              Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-04 06:14 -0700
      Re: Setting architectural features in stone Walter Banks <walter@bytecraft.com> - 2016-08-03 07:03 -0400
        Re: Setting architectural features in stone already5chosen@yahoo.com - 2016-08-03 04:12 -0700
          Re: Setting architectural features in stone already5chosen@yahoo.com - 2016-08-03 04:26 -0700
            Re: Setting architectural features in stone Walter Banks <walter@bytecraft.com> - 2016-08-03 07:50 -0400
          Re: Setting architectural features in stone Walter Banks <walter@bytecraft.com> - 2016-08-03 07:35 -0400
    Re: Setting architectural features in stone anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-03 06:42 +0000
      Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-03 00:03 -0700
        Re: Setting architectural features in stone anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-03 08:30 +0000
      Re: Setting architectural features in stone Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-08-03 11:02 +0100
        Re: Setting architectural features in stone Ivan Godard <ivan@millcomputing.com> - 2016-08-03 03:15 -0700
        Re: Setting architectural features in stone anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-03 11:53 +0000
          Re: Setting architectural features in stone Quadibloc <jsavard@ecn.ab.ca> - 2016-08-03 18:03 -0700
            Re: Setting architectural features in stone Bruce Hoult <bruce.hoult@gmail.com> - 2016-08-04 01:54 -0700
            Re: Setting architectural features in stone anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-04 09:28 +0000
      Re: Setting architectural features in stone timcaffrey@aol.com - 2016-08-04 09:48 -0700
        Re: Setting architectural features in stone Stephen Fuld <SFuld@alumni.cmu.edu.invalid> - 2016-08-04 10:04 -0700

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