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Re: New "Forth" MCU Board, ChipStick

From Paul Rubin <no.email@nospam.invalid>
Newsgroups comp.lang.forth
Subject Re: New "Forth" MCU Board, ChipStick
Date 2016-05-09 11:08 -0700
Organization A noiseless patient Spider
Message-ID <87posv5ckh.fsf@jester.gateway.pace.com> (permalink)
References (16 earlier) <slrnniv1pt.hrs.albert@cherry.spenarnc.xs4all.nl> <87lh3k77yi.fsf@jester.gateway.pace.com> <joKdnUlyBJ7aB7LKnZ2dnUU7-RvNnZ2d@earthlink.com> <87d1ow70zp.fsf@jester.gateway.pace.com> <slrnnj0pge.o0t.albert@cherry.spenarnc.xs4all.nl>

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Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> writes:
>> Value Line PDIP part that plugs into the Launchpad just like the 2553.
> That is ridiculous. If you've a more powerful part, you need more pins.
> The Dupont board has a total of 48 pins, 2K RAM 61K flash.
> It is compatible enough. All io that is available on the launchpad
> is there.

1. That's some weird board that I have to order from .NL?  Seems like a
pain compared to a Launchpad.  Also, it uses an SMT part instead of a
convenient PDIP that I can use on a breadboard or easily hand solder in
my own circuits.

2. Even if you're right that there's a correspondence between an
application's memory requirements and the number of pins it needs, the
chip vendor probably assumes most applications are written in C.  If
writing my app in C uses 10k of ram and 300 bytes of flash, the 2553 can
easily run it, and maybe the pin count also comes out right for the app.
But now if we want to write the app in Forth, that will take another
10k(?) of flash for the interpreter and another 0.25k or so of ram as
well, so it no longer fits.  What we want is a more powerful chip with
the same pins.

3. The Atmeta328 (32k flash, 2k ram)'s popularity shows there is high
demand for a PDIP part with those resources.  It does have a few more
pins than the 2553 but it would be fine without the extra ones.

4. The ATTiny85 (8k flash, 0.5k ram) is also popular in the maker
community and it's available in DIP-8 format, showing high pin counts
are not always needed.  It has enough flash+ram to run plenty of small C
applications.  But again, if we want to include a Forth interpreter, we
need at least 2553-like capacity and preferably more.

5. In fact one of the attractions of Forth is that the complete
interpreter and dev environment (editor etc.) written in Forth so the
user can modify it and rebuild it.  I think historical environments like
that wanted around 64k of ram and 1MB of disk, which is doable with some
of the Cortex-M parts: if that was available in a 2553-like package and
cheap enough, I'd use it!

6. Even further, one of the boards we're discussing here, the Dragonfly,
has a Cortex M4 cpu with 128k ram and 512M flash on the chip, plus 16MB
of on-board SPI flash.  That's enough for a complete dev environment
with files, documentation, source code to everything, revision control,
etc.  One thing not really needed is more pins!  There's no technical
obstacle to putting it all in a 2553-sized PDIP.

7. In fact, ... , well you get the idea.

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Thread

New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-30 21:39 -0400
  Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-30 18:52 -0700
  Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-30 20:31 -0700
  Re: New "Forth" MCU Board, ChipStick JUERGEN <epldfpga@aol.com> - 2016-03-30 23:41 -0700
    Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 00:37 -0700
      Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-31 14:36 -0400
        Re: New "Forth" MCU Board, ChipStick JUERGEN <epldfpga@aol.com> - 2016-04-01 00:42 -0700
          Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-01 13:09 -0400
            Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-04-01 23:43 +0000
              Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-01 17:28 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-04-02 12:10 +0000
      Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-03-31 17:07 -0500
        Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-03-31 23:59 +0000
        Re: New "Forth" MCU Board, ChipStick JUERGEN <epldfpga@aol.com> - 2016-04-01 00:52 -0700
          Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-01 12:47 -0500
    Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 18:54 -0700
      Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-31 22:08 -0400
        Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 19:36 -0700
          Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-31 23:28 -0400
            Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 22:32 -0700
              Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-01 02:39 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-01 04:42 -0700
                Re: New "Forth" MCU Board, ChipStick josv@planet.nl - 2016-04-01 04:48 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-01 05:50 -0700
                Re: New "Forth" MCU Board, ChipStick anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-04-01 13:35 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-01 13:11 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 01:58 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-02 10:15 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 08:02 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-02 12:39 -0400
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-02 12:54 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-02 15:14 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 22:14 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-02 23:08 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-03 02:11 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-03 22:54 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 02:50 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-04 16:37 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 23:15 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 02:21 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 00:01 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 03:17 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 01:15 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 12:50 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-04 23:21 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 02:29 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 00:02 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-05 02:07 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 13:12 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 00:12 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 03:22 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 01:22 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-05 02:12 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 13:15 -0400
                Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-05 17:14 -0500
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 03:03 -0700
                Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-04 19:51 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-04 20:18 -0700
                Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-04 20:44 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-04 22:39 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 02:25 -0400
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-04 16:23 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 23:18 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 13:22 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-05 13:34 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 21:28 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 22:34 -0700
                Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-01 15:52 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 01:55 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-04 22:38 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-04 23:10 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-05 16:28 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-05 22:35 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-05 21:40 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-05 22:13 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-05 22:44 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-06 02:41 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-06 01:26 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-06 02:02 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-06 09:06 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-06 05:09 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-06 03:50 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-06 19:23 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-06 16:29 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-07 11:32 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-07 15:38 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-08 09:45 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-08 11:04 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-08 17:36 +0000
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-08 17:39 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-08 14:08 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-08 10:52 -0700
                Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-05-08 14:57 -0500
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-08 13:23 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 09:26 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-09 10:26 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-09 09:38 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-09 12:58 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 22:53 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-09 22:41 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 11:08 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 13:21 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 23:39 +0000
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 19:03 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 21:44 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-10 08:28 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-10 12:34 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-10 22:27 +0000
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 09:16 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-08 14:01 -0400
            Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 23:26 -0700
      Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 19:09 -0700
        Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-03-31 21:41 -0500
          Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 23:10 -0700
            Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-01 12:37 -0500
              Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-01 15:35 -0700
                Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-01 18:11 -0500
        Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 19:47 -0700
          Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 23:23 -0700

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