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Re: Recognizers discussion

From anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups comp.lang.forth
Subject Re: Recognizers discussion
Date 2017-05-08 13:25 +0000
Organization Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID <2017May8.152530@mips.complang.tuwien.ac.at> (permalink)
References (4 earlier) <868tmbf8xn.fsf@molnjunk.nocrew.org> <2017May6.182659@mips.complang.tuwien.ac.at> <BdKdne7S8sckfJPEnZ2dnUU7-bednZ2d@supernews.com> <oempq7$970$1@dont-email.me> <oeob70$3p2$5@dont-email.me>

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Bernd Paysan <bernd@net2o.de> writes:
>Am Sun, 07 May 2017 10:39:24 +0100 schrieb Alex:
>
>> On 5/7/2017 09:58, Andrew Haley wrote:
>>> What's wrong with BLOCK, though?  It sounds perfect for flash.
>> 
>> It's too simplistic as a low level interface, and would require a lot of
>> support either on-chip or in the I/O stack. NAND flash isn't really a
>> random access block or byte addressable medium.
>
>BLOCK was originally for disks, and it copied the contents of the 
>referenced block into RAM.  So it matches NAND flash access style 
>perfectly (maybe with the exception of how big the NAND flash granularity 
>is - but I think most NAND flashes still are 512 bytes, while large hard 
>disks nowadays have 4k sectors).

As reported by Alex, there are flash devices with 16MB erase
granularity and 16KB read/write granularity.  1KB blocks are
definitely not perfect, and if we want to just adjust the block size
while keeping the basic interface, the obvious solution would be to go
for 16MB blocks on these devices.  16KB blocks may be more to our
liking, but because we need to erase the surrounding 16MB to write the
16KB block, would require some kind of flash translation layer.

In other words:

1KB blocks: everything but "perfect".

16KB blocks: slightly closer.

16MB blocks: An ok fit to the blocks interface, but does not make good
use of the possibility of 16KB read/write blocks.  And 16MB blocks may
be a bad fit for the application.

As for hard disks, shingled magnetic recording also gives us large
granularity (several MB) when writing.

- 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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