Re: USB card adapters crash Pi4

From	Dennis Lee Bieber <wlfraed@ix.netcom.com>
Newsgroups	comp.sys.raspberry-pi
Subject	Re: USB card adapters crash Pi4
Date	2021-01-03 20:44 -0500
Organization	IISS Elusive Unicorn
Message-ID	<ekr4vf1on2vmjc0iad238vb8o739geb826@4ax.com> (permalink)
References	(10 earlier) <rssoki$19an$1@gioia.aioe.org> <20210103182819.478f6039@jresid.jretrading.com> <rst6cm$6g6$1@dont-email.me> <20210103211636.1f58d8de@jresid.jretrading.com> <rsth51$6g6$2@dont-email.me>

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On Sun, 3 Jan 2021 22:40:33 -0000 (UTC), Martin Gregorie
<martin@mydomain.invalid> declaimed the following:

>I know that all so-called BASICs differ, some radically from the original 
>Dartmouth BASIC. I thought that the context would make it plain that I 
>was talking about PICAXE BASIC, which differs enough from traditional 
>BASICs to be given another name (labels not numbers for branch 
>destinations and subroutines, long names for variables, named constants, 
>unsigned arithmetic and comparisons, conditional statement inclusion).
>

	PICAXE BASIC and BASIC-Stamp BASICs were optimized for microcontrollers
with GPIO. Unsigned arithmetic maps to an 8-bit GPIO control register quite
well (especially for bit masking). The processor chips have most of their
flash memory filled with a simplified BASIC byte-code interpreter -- one's
application gets downloaded (as byte-code) to a small EEPROM (or worse -- a
large RAM) and is treated as data by the interpreter.

	A BS2 has only 32-bytes of RAM, and 6 of those are dedicated to GPIO
input, output, and direction control. That leaves just 13 16-bit variables
or 26 8-bit variables. The BS2 does allow defining variables and bit,
nybble, byte, or word -- and the compiler does its best to optimize the RAM
allocation. The manual does imply that the BS2 supports signed 16-bit
values -- but when outputting them (debug print) one needs to specify the
SDEC formatter, otherwise one gets an unsigned representation.


-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
	wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

Thread

USB card adapters crash Pi4 bob prohaska <bp@www.zefox.net> - 2021-01-01 20:53 +0000
  Re: USB card adapters crash Pi4 Nikolaj Lazic <nlazicBEZ_OVOGA@mudrac.ffzg.hr> - 2021-01-01 23:32 +0000
    Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 00:52 +0000
      Re: USB card adapters crash Pi4 bob prohaska <bp@www.zefox.net> - 2021-01-02 02:13 +0000
      Re: USB card adapters crash Pi4 "Dave Liquorice" <allsortsnotthisbit@howhill.com> - 2021-01-02 09:49 +0000
        Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 12:34 +0000
          Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 12:51 +0000
            Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 13:23 +0000
              Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 14:52 +0000
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 17:27 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 18:05 +0000
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 19:45 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-02 20:41 +0000
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-03 05:53 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-03 14:39 +0000
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-03 15:41 +0000
                Re: USB card adapters crash Pi4 Joe <joe@jretrading.com> - 2021-01-03 18:38 +0000
                Re: USB card adapters crash Pi4 Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-03 19:15 +0000
                Re: USB card adapters crash Pi4 The Natural Philosopher <tnp@invalid.invalid> - 2021-01-04 03:17 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 11:33 +0000
                Re: USB card adapters crash Pi4 Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-04 12:24 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 13:58 +0000
                Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 10:21 -0500
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 15:33 +0000
                Re: USB card adapters crash Pi4 Björn Lundin <b.f.lundin@gmail.com> - 2021-01-23 23:03 +0100
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-23 22:54 +0000
                Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-23 18:30 -0500
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-24 14:42 +0000
                Re: USB card adapters crash Pi4 Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-23 23:31 +0000
                Re: USB card adapters crash Pi4 Scott Alfter <scott@alfter.diespammersdie.us> - 2021-01-25 17:23 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-25 18:31 +0000
                Re: USB card adapters crash Pi4 Jim H <invalid@invalid.invalid> - 2021-01-25 18:47 +0000
                Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-26 10:59 -0500
                Re: USB card adapters crash Pi4 Scott Alfter <scott@alfter.diespammersdie.us> - 2021-01-26 17:13 +0000
                Re: USB card adapters crash Pi4 mjb@signal11.invalid (Mike) - 2021-01-26 23:11 +0000
                Re: USB card adapters crash Pi4 Richard Kettlewell <invalid@invalid.invalid> - 2021-01-25 18:55 +0000
                Re: USB card adapters crash Pi4 Dennis <dennis@none.none> - 2021-01-25 15:21 -0600
                Re: USB card adapters crash Pi4 The Natural Philosopher <tnp@invalid.invalid> - 2021-01-24 09:36 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-03 19:36 +0000
                Re: USB card adapters crash Pi4 Joe <joe@jretrading.com> - 2021-01-03 21:16 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-03 22:40 +0000
                Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-03 20:44 -0500
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 11:46 +0000
                Re: USB card adapters crash Pi4 Joe <joe@jretrading.com> - 2021-01-04 09:38 +0000
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 12:03 +0000
                Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 11:01 -0500
                Re: USB card adapters crash Pi4 Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 17:15 +0000
                Re: USB card adapters crash Pi4 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 14:03 -0500
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-05 06:17 +0000
              Re: USB card adapters crash Pi4 Deloptes <deloptes@gmail.com> - 2021-01-02 16:06 +0100
                Re: USB card adapters crash Pi4 A. Dumas <alexandre@dumas.fr.invalid> - 2021-01-02 16:36 +0000
                Re: USB card adapters crash Pi4 The Natural Philosopher <tnp@invalid.invalid> - 2021-01-02 16:38 +0000
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 17:29 +0000
                Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 17:18 +0000
                Re: USB card adapters crash Pi4 David Higton <dave@davehigton.me.uk> - 2021-01-02 20:21 +0000
            Re: USB card adapters crash Pi4 Theo <theom+news@chiark.greenend.org.uk> - 2021-01-03 10:07 +0000
              Re: USB card adapters crash Pi4 Theo <theom+news@chiark.greenend.org.uk> - 2021-01-03 18:39 +0000
          Re: USB card adapters crash Pi4 "Dave Liquorice" <allsortsnotthisbit@howhill.com> - 2021-01-02 13:08 +0000
  Re: USB card adapters crash Pi4 Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2021-01-02 09:10 +0000
  Re: USB card adapters crash Pi4 druck <news@druck.org.uk> - 2021-01-02 12:36 +0000
    Re: USB card adapters crash Pi4 bob prohaska <bp@www.zefox.net> - 2021-01-02 20:45 +0000

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