Re: Raspberry Pi

Newsgroups	comp.lang.forth
From	Roger Ivie <rivie@ridgenet.net>
Subject	Re: Raspberry Pi
References	<027eb457-679a-44bb-921e-65e4b955e892@u2g2000vbe.googlegroups.com>
Message-ID	<slrnjh4ech.54u.rivie@stench.no.domain> (permalink)
Date	2012-01-14 20:27 -0600

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On 2012-01-14, Alex McDonald <blog@rivadpm.com> wrote:
> This looks like a cool vehicle for some Forth development;
> Broadcom BCM2835 is an ARM11 core based on ARMv6 architecture, with an
> SD card, USB, Ethernet & GPIO, decent amount of RAM.

My reading is that the Broadcom chip *actually* seems to be a
graphics engine with some sort of ARM sidecard. It seems as if
the proprietary graphics engine is the processor that has access
to all of the I/O and the ARM has to ask it to poke ports. The
graphics engine runs a closed-source binary blob that sideloads
Linux into the ARM.

I fear there'll be no public documentation beyond the hooks that
Linux uses to ask the graphics engine to do stuff.
-- 
roger ivie
rivie@ridgenet.net

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Raspberry Pi Alex McDonald <blog@rivadpm.com> - 2012-01-14 15:28 -0800
  Re: Raspberry Pi jc <john.comeau@gmail.com> - 2012-01-14 16:45 -0800
    Re: Raspberry Pi Alex McDonald <blog@rivadpm.com> - 2012-01-15 12:30 -0800
      Re: Raspberry Pi jc <john.comeau@gmail.com> - 2012-01-15 17:51 -0800
        Re: Raspberry Pi rickman <gnuarm@gmail.com> - 2012-01-16 07:54 -0800
  Re: Raspberry Pi Roger Ivie <rivie@ridgenet.net> - 2012-01-14 20:27 -0600
    Re: Raspberry Pi Alex McDonald <blog@rivadpm.com> - 2012-01-15 12:26 -0800
  Re: Raspberry Pi dirk.bruehl@usa.net - 2012-01-14 19:42 -0800
    Re: Raspberry Pi Rick Collins <rick.collins.2000@gmail.com> - 2012-01-15 07:10 -0800
      Re: Raspberry Pi dirk.bruehl@usa.net - 2012-01-15 11:00 -0800
    Re: Raspberry Pi stephenXXX@mpeforth.com (Stephen Pelc) - 2012-01-16 10:37 +0000

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