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Groups > comp.lang.forth > #58780

Re: Flash

From anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups comp.lang.forth
Subject Re: Flash
Date 2017-05-07 17:21 +0000
Organization Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID <2017May7.192133@mips.complang.tuwien.ac.at> (permalink)
References (6 earlier) <BdKdne7S8sckfJPEnZ2dnUU7-bednZ2d@supernews.com> <2017May7.125137@mips.complang.tuwien.ac.at> <b9SdnYhKwvB4hpLEnZ2dnUU7-aPNnZ2d@supernews.com> <2017May7.155729@mips.complang.tuwien.ac.at> <5ff594b1-dd92-4e5d-a20a-7b20146d738c@googlegroups.com>

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Raimond Dragomir <raimond.dragomir@gmail.com> writes:
>> With a 64KB erase block size, writing one 1KB block means reading the
>> 64KB into RAM, copying the 1KB, into the buffer, erasing the 64KB on
>> the flash device, and then writing the 64KB back.  That's not what I
>> consider "perfect".
>
>Who says you should do that? In fact nobody's doing that.

It's the simplest approach.

>For one thing
>you risk the entire 64K in a power off event. There's also the flash
>wearing level to consider...

Good reasons to go for a more complicated approach.  Which supports my
point: the blocks wordset is not perfect for flash.

>> Instead,
>> the Forth way is to use an interface that is appropriate for flash.
>
>I don't understand what you mean. Dealing with raw flash is not very
>simple but also not very complicated. Implementing fixed 1K blocks
>addressed by numbers (in the forth way) is much more simpler than 
>implementing a file system. But you should implement something don't you?

Sure.  AFAIK the users of microcontrollers with NOR flash use flash
not for blocks, but for storing the write-once parts of the
dictionary.  But someone with first-hand experience is in a better
position to provide information.

Likewise for NAND flash.  Does it play a role in Forth systems?  If
so, what is it used for and how is it accessed?  Once we know that, we
may find a better solution than just saying: "Blocks are great,
because they were great for floppies, and they are still simpler than
a file system".

- anton
-- 
M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
     New standard: http://www.forth200x.org/forth200x.html
   EuroForth 2017: http://www.euroforth.org/ef17/

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Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 15:27 +0100
  Recognizers discussion lehs <skydda.barnen@gmail.com> - 2017-05-02 07:52 -0700
    Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-02 08:19 -0700
      Re: Recognizers discussion lehs <skydda.barnen@gmail.com> - 2017-05-02 08:27 -0700
    Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 19:55 +0100
      Re: Recognizers discussion lehs <skydda.barnen@gmail.com> - 2017-05-03 02:38 -0700
        Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-04 15:16 +0000
  Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 17:05 +0100
    Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 17:23 +0100
      Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 17:26 +0100
      Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-02 13:03 -0500
        Re: Recognizers discussion Matthias Trute <matthias.trute@gmail.com> - 2017-05-02 12:44 -0700
          Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-03 04:36 -0500
        Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-04 13:28 +0000
          Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 09:13 -0500
  Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-02 12:35 -0500
    Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 18:53 +0100
      Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-02 13:10 -0500
        Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-02 19:22 +0100
        Re: Recognizers discussion Bernd Paysan <bernd@net2o.de> - 2017-05-02 22:53 +0000
          Re: Recognizers discussion Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2017-05-03 07:39 +0100
            Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-03 10:58 +0100
            Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-04 13:53 +0000
            Re: Recognizers discussion Bernd Paysan <bernd@net2o.de> - 2017-05-06 01:21 +0000
            Re: Recognizers discussion pahihu <pahihu@gmail.com> - 2017-05-06 00:22 -0700
              Re: Recognizers discussion Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2017-05-06 23:05 +0100
                Re: Recognizers discussion pahihu <pahihu@gmail.com> - 2017-05-06 22:36 -0700
          Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-03 04:38 -0500
            Re: Recognizers discussion minforth@arcor.de - 2017-05-03 04:49 -0700
              Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-03 05:03 -0700
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-03 09:02 -0500
                Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-03 07:45 -0700
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-03 11:24 -0500
                Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-03 09:45 -0700
                Re: Recognizers discussion Raimond Dragomir <raimond.dragomir@gmail.com> - 2017-05-03 10:08 -0700
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-09 15:56 +0000
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-03 18:37 +0100
                Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-03 11:07 -0700
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-03 20:55 +0100
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 02:47 -0500
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-04 13:07 +0100
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 07:59 -0500
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-04 17:38 +0100
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 12:42 -0500
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 02:43 -0500
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-04 13:05 +0100
                Re: Recognizers discussion Ron Aaron <rambamist@gmail.com> - 2017-05-04 15:10 +0300
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-04 13:25 +0100
                Re: Recognizers discussion Ron Aaron <rambamist@gmail.com> - 2017-05-04 15:33 +0300
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 08:05 -0500
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-09 15:54 +0000
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-09 11:10 -0500
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-10 11:49 +0000
                Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-04 16:14 +0000
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 13:02 -0500
                Re: Recognizers discussion Bernd Paysan <bernd@net2o.de> - 2017-05-05 23:29 +0000
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-07 03:56 -0500
                Re: Recognizers discussion Bernd Paysan <bernd@net2o.de> - 2017-05-07 22:42 +0000
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-08 04:08 -0500
                Re: Recognizers discussion Julian Fondren <julian.fondren@gmail.com> - 2017-05-03 08:51 -0700
                Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-03 09:38 -0700
                Re: Recognizers discussion Julian Fondren <julian.fondren@gmail.com> - 2017-05-03 09:59 -0700
                Re: Recognizers discussion Mark Wills <markwills1970@gmail.com> - 2017-05-03 10:16 -0700
                Re: Recognizers discussion albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-03 22:04 +0200
                Re: Recognizers discussion minforth@arcor.de - 2017-05-03 22:09 -0700
                Re: Recognizers discussion Joel Rees <joel.rees@gmail.com> - 2017-05-07 19:50 -0700
                Re: Recognizers discussion "Elizabeth D. Rather" <erather@forth.com> - 2017-05-07 21:33 -1000
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-08 04:12 -0500
                Re: Recognizers discussion Joel Rees <joel.rees@gmail.com> - 2017-05-08 20:21 -0700
                FP stack (was: Recognizers discussion) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-08 12:35 +0000
                Re: FP stack (was: Recognizers discussion) Joel Rees <joel.rees@gmail.com> - 2017-05-08 20:50 -0700
                Re: FP stack Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-09 03:39 -0500
                Re: FP stack Joel Rees <joel.rees@gmail.com> - 2017-05-09 20:59 -0700
                Re: FP stack Julian Fondren <julian.fondren@gmail.com> - 2017-05-10 00:03 -0700
                Re: FP stack Alex <alex@rivadpm.com> - 2017-05-10 08:10 +0100
                Re: FP stack "Elizabeth D. Rather" <erather@forth.com> - 2017-05-09 21:24 -1000
                Re: FP stack Julian Fondren <julian.fondren@gmail.com> - 2017-05-10 00:37 -0700
                Re: FP stack "Elizabeth D. Rather" <erather@forth.com> - 2017-05-09 22:53 -1000
                Re: FP stack Alex <alex@rivadpm.com> - 2017-05-10 08:53 +0100
                Re: FP stack Ron Aaron <rambamist@gmail.com> - 2017-05-10 11:00 +0300
                Re: FP stack Paul Rubin <no.email@nospam.invalid> - 2017-05-10 01:02 -0700
                Re: FP stack Ron Aaron <rambamist@gmail.com> - 2017-05-10 11:06 +0300
                Re: FP stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-10 09:58 +0000
                Re: FP stack Ron Aaron <rambamist@gmail.com> - 2017-05-10 14:17 +0300
                Re: FP stack Alex <alex@rivadpm.com> - 2017-05-10 13:09 +0100
                Re: FP stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-10 15:05 +0000
                Re: FP stack albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-10 11:43 +0200
                Re: FP stack "HAA" <someone@microsoft.com> - 2017-05-10 18:34 +1000
                Re: FP stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-10 09:45 +0000
                Re: FP stack "HAA" <someone@microsoft.com> - 2017-05-11 19:13 +1000
                Re: FP stack Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-11 04:50 -0500
                Re: FP stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-11 16:18 +0000
                Re: FP stack Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-11 12:12 -0500
                Re: FP stack stephen@mpeforth.com (Stephen Pelc) - 2017-05-11 13:53 +0000
                Re: FP stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-11 15:43 +0000
                Re: FP stack Joel Rees <joel.rees@gmail.com> - 2017-05-12 08:48 -0700
                Re: FP stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-11 16:31 +0000
                Re: FP stack "Elizabeth D. Rather" <erather@forth.com> - 2017-05-11 10:18 -1000
                Re: FP stack Cecil Bayona <cbayona@cbayona.com> - 2017-05-11 15:37 -0500
                Re: FP stack "Elizabeth D. Rather" <erather@forth.com> - 2017-05-11 17:25 -1000
                Re: FP stack Cecil Bayona <cbayona@cbayona.com> - 2017-05-11 22:55 -0500
                Re: FP stack "HAA" <someone@microsoft.com> - 2017-05-13 14:24 +1000
                Re: FP stack albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-13 13:44 +0200
                Re: FP stack Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-10 05:58 -0500
                Re: FP stack (was: Recognizers discussion) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-09 13:50 +0000
                Re: FP stack (was: Recognizers discussion) Joel Rees <joel.rees@gmail.com> - 2017-05-10 00:25 -0700
                Re: FP stack (was: Recognizers discussion) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-10 11:39 +0000
                Re: FP stack (was: Recognizers discussion) Joel Rees <joel.rees@gmail.com> - 2017-05-10 11:49 -0700
                Re: FP stack (was: Recognizers discussion) "HAA" <someone@microsoft.com> - 2017-05-09 21:15 +1000
                Re: Recognizers discussion "HAA" <someone@microsoft.com> - 2017-05-09 14:16 +1000
              Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-03 08:57 -0500
                Re: Recognizers discussion minforth@arcor.de - 2017-05-03 07:54 -0700
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-03 11:30 -0500
                Re: Recognizers discussion Cecil Bayona <cbayona@cbayona.com> - 2017-05-03 14:05 -0500
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-03 18:42 +0100
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 02:51 -0500
                Re: Recognizers discussion "HAA" <someone@microsoft.com> - 2017-05-04 22:29 +1000
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-04 13:41 +0100
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-04 09:06 -0500
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-15 12:22 +0000
                Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-15 07:36 -0500
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-18 21:21 +0000
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-18 21:24 +0000
                Re: Recognizers discussion albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-04 20:17 +0200
                Re: Recognizers discussion "HAA" <someone@microsoft.com> - 2017-05-05 11:03 +1000
                Re: Recognizers discussion minforth@arcor.de - 2017-05-05 00:16 -0700
                Re: Recognizers discussion JUERGEN <epldfpga@aol.com> - 2017-05-05 13:15 -0700
                Re: Recognizers discussion "HAA" <someone@microsoft.com> - 2017-05-06 16:49 +1000
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-05 21:00 +0100
      Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-09 14:17 +0000
        Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-09 15:46 +0100
          Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-10 11:50 +0000
            Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-10 13:11 +0100
              Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-10 13:49 +0000
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-10 15:57 +0100
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-12 14:17 +0000
  Re: Recognizers discussion "Elizabeth D. Rather" <erather@forth.com> - 2017-05-02 09:25 -1000
    Re: Recognizers discussion albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-03 01:19 +0200
    Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-05 15:50 +0000
      Re: Recognizers discussion "HAA" <someone@microsoft.com> - 2017-05-08 11:43 +1000
        Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-08 19:17 +0000
          Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-09 14:25 +0000
            Re: Recognizers discussion "Elizabeth D. Rather" <erather@forth.com> - 2017-05-09 21:22 -1000
              Re: Recognizers discussion "HAA" <someone@microsoft.com> - 2017-05-13 13:33 +1000
                Re: Recognizers discussion "Elizabeth D. Rather" <erather@forth.com> - 2017-05-12 21:32 -1000
                Re: Recognizers discussion Howerd <howerdo@yahoo.co.uk> - 2017-05-13 07:12 -0700
                Re: Recognizers discussion "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-05-13 14:30 +0000
  Re: Recognizers discussion rickman <gnuarm@gmail.com> - 2017-05-04 11:37 -0400
    Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-04 17:51 +0100
      Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-05 07:31 +0000
        Re: Recognizers discussion Lars Brinkhoff <lars.spam@nocrew.org> - 2017-05-05 20:35 +0200
          Re: Recognizers discussion minforth@arcor.de - 2017-05-05 12:27 -0700
          Re: Recognizers discussion Cecil Bayona <cbayona@cbayona.com> - 2017-05-05 15:03 -0500
          Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-06 16:26 +0000
            Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-06 18:17 +0100
              Re: Recognizers discussion Brad Eckert <hwfwguy@gmail.com> - 2017-05-06 12:26 -0700
                Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-06 21:39 +0100
            Re: Recognizers discussion Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-07 03:58 -0500
              Re: Recognizers discussion Alex <alex@rivadpm.com> - 2017-05-07 10:39 +0100
                Re: Recognizers discussion Bernd Paysan <bernd@net2o.de> - 2017-05-07 23:39 +0000
                Re: Recognizers discussion Paul Rubin <no.email@nospam.invalid> - 2017-05-07 17:38 -0700
                Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-08 13:40 +0000
                Re: Recognizers discussion anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-08 13:25 +0000
                Re: Recognizers discussion Lars Brinkhoff <lars.spam@nocrew.org> - 2017-05-08 16:25 +0200
              Flash (was: Recognizers discussion) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-07 10:51 +0000
                Re: Flash Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-05-07 08:06 -0500
                Re: Flash anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-07 13:57 +0000
                Re: Flash Lars Brinkhoff <lars.spam@nocrew.org> - 2017-05-07 16:46 +0200
                Re: Flash Alex <alex@rivadpm.com> - 2017-05-07 16:31 +0100
                Re: Flash anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-07 17:16 +0000
                Re: Flash Alex <alex@rivadpm.com> - 2017-05-07 19:18 +0100
                Re: Flash albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-05-07 21:45 +0200
                Re: Flash Matthias Trute <matthias.trute@gmail.com> - 2017-05-07 12:54 -0700
                Re: Flash Alex <alex@rivadpm.com> - 2017-05-07 19:33 +0100
                Re: Flash Raimond Dragomir <raimond.dragomir@gmail.com> - 2017-05-07 08:50 -0700
                Re: Flash anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-05-07 17:21 +0000
    Re: Recognizers discussion Matthias Trute <matthias.trute@gmail.com> - 2017-05-04 10:07 -0700

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