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Re: blocks and overlays question

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From Paul Rubin <no.email@nospam.invalid>
Newsgroups comp.lang.forth
Subject Re: blocks and overlays question
Date Tue, 27 Sep 2016 15:36:17 -0700
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"Elizabeth D. Rather" <erather@forth.com> writes:
>> with the ability to reclaim the ram using overlays, compiling from
>> source sounds more attractive.
> Much simpler and cleaner.

I think this can even be ok even if it's compile-to-flash like with
several of the existing MCU Forths.

>> How many block buffers did a usable block system actually need
> Two is a minimum for decent operation. Beyond that, it really depends
> on how much RAM you have and other issues. With flash, you want to
> minimize writes.

Good point--if the system is logging data or otherwise frequently
updating flash pages, write wear is an issue.  If flash is only written
occasionally (like when someone edits code and saves it) then it
probably doesn't matter, if it's good for a few thousand cycles.  The
chip also has a few bytes of NVRAM in case a measurement or two needs to
be updated a lot and survive power cuts.

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blocks and overlays question Paul Rubin <no.email@nospam.invalid> - 2016-09-27 11:22 -0700
  Re: blocks and overlays question albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-27 20:51 +0200
    Re: blocks and overlays question Paul Rubin <no.email@nospam.invalid> - 2016-09-27 12:36 -0700
      Re: blocks and overlays question "Elizabeth D. Rather" <erather@forth.com> - 2016-09-27 10:16 -1000
        Re: blocks and overlays question Paul Rubin <no.email@nospam.invalid> - 2016-09-27 13:41 -0700
          Re: blocks and overlays question "Elizabeth D. Rather" <erather@forth.com> - 2016-09-27 11:36 -1000
            Re: blocks and overlays question Paul Rubin <no.email@nospam.invalid> - 2016-09-27 15:36 -0700
              Re: blocks and overlays question "Elizabeth D. Rather" <erather@forth.com> - 2016-09-27 13:33 -1000
                Re: blocks and overlays question Paul Rubin <no.email@nospam.invalid> - 2016-09-27 16:54 -0700
          Re: blocks and overlays question albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-09-28 09:44 +0200
  Re: blocks and overlays question hughaguilar96@gmail.com - 2016-09-27 12:22 -0700
  Re: blocks and overlays question foxaudioresearch@gmail.com - 2016-09-27 12:51 -0700
    Re: blocks and overlays question Paul Rubin <no.email@nospam.invalid> - 2016-09-27 13:25 -0700
    Re: blocks and overlays question Mark Wills <markwills1970@gmail.com> - 2016-09-28 03:37 -0700
      Re: blocks and overlays question foxaudioresearch@gmail.com - 2016-09-28 07:41 -0700
        Re: blocks and overlays question Mark Wills <markwills1970@gmail.com> - 2016-09-28 15:05 -0700

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