From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([69.77.167.62] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1KlkKm-00027t-92 for garchives@archives.gentoo.org; Fri, 03 Oct 2008 13:04:40 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 148ACE0303; Fri, 3 Oct 2008 13:04:40 +0000 (UTC) Received: from mail-gx0-f19.google.com (mail-gx0-f19.google.com [209.85.217.19]) by pigeon.gentoo.org (Postfix) with ESMTP id DB6B2E0303 for ; Fri, 3 Oct 2008 13:04:39 +0000 (UTC) Received: by gxk12 with SMTP id 12so2742638gxk.10 for ; Fri, 03 Oct 2008 06:04:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:in-reply-to:mime-version:content-type:references; bh=Mr9HicOxiw/Sj3as5vqUe7We1oR5q0bSjHjDhp/ht5E=; b=Dh+NIqjYTVUp3Rzj8e8O35E5XlEHMVEFo2/qAYBk9jTBgRtsgDaT68XtjpkU2A4zSq QyG/vfyXQUBOD12cMyabWU02IS73u9CAgRwN5SnE+IL28b4d8h58zkklw7uJa6FM7lx1 b91P4Ol1y1dH5izIf7dXxRQXVIRAWgWPOHt0Q= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version :content-type:references; b=j9JYGgU0KJcOpBA00plIKR2X5K+ZnAuUf8QM9ueNlS4lfTYKBYnNekdthKa8T0KfAS aeU9y+IdA2U4oCuPZ9daqPynTT7qfiKuS0acuCssJzqAGqNKE7c/sWs8coeQx330f/AS qy+2Uqsg81VbrLFekKQx0abK8JxeKnalOcCbQ= Received: by 10.90.70.6 with SMTP id s6mr1285382aga.17.1223039078595; Fri, 03 Oct 2008 06:04:38 -0700 (PDT) Received: by 10.90.55.18 with HTTP; Fri, 3 Oct 2008 06:04:38 -0700 (PDT) Message-ID: <8349216a0810030604s4d2e1ad1se5685816bbb7c126@mail.gmail.com> Date: Fri, 3 Oct 2008 15:04:38 +0200 From: "Jean-Marc Beaune" To: gentoo-embedded@lists.gentoo.org Subject: Re: [gentoo-embedded] arm or armeb? In-Reply-To: <48E6079F.2090508@hiramoto.org> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-embedded@lists.gentoo.org Reply-to: gentoo-embedded@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_23122_27958045.1223039078527" References: <8349216a0810030318r32fa8805u78b842b9b265126e@mail.gmail.com> <48E5FC63.1090509@hiramoto.org> <8349216a0810030434r3b5d7c29xb5ebc0d8a99cdc6e@mail.gmail.com> <48E6079F.2090508@hiramoto.org> X-Archives-Salt: 2085beb2-6cff-4f8e-98c7-cd210ca2d57f X-Archives-Hash: 0d927017ecc209e3e17ad12ec079a18f ------=_Part_23122_27958045.1223039078527 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Thank you, All right, but actually I didn't buy this hardware yet, I'm just investigating and ceating crossdev toolchain. So, not possible to know what's the difference between 'arm' and 'armeb' machines? Cheers, /JM On Fri, Oct 3, 2008 at 1:53 PM, Karl Hiramoto wrote: > Jean-Marc Beaune wrote: > > Hi, > > > > The details: > > > > - Processor: 16/32 bit *AT91SAM7X256* (ARM7TDMI-S=99) > > - 256 K Flash > > - 64 K RAM > > - USB 2.0 > > - Ethernet 10/100 Mbits > > - 2 x RS-232 > > - ADC (10 bits), CAN, 2 x UARTs, TWI(I2C), 2 x SPI, 3 x timers > > 32bit, SSC, 4 x PWM, WDT, PDC (DMA) > > - Frequency up to 55 MHz > > - JTAG connector (ARM's 2 x 10 pins - ARM-JTAG compatible) > > - Color TFT 128 x 128 pixels > > - SD=99/MMC=99 > > - Mini-joystick > > - Loudspeaker > > - Audio input/output > > - Crystal 18,432 MHz sur support > > - RESET buton > > - Dimension: 128 x 98 mm > > > > The question is not specifically for this hardware but more "when to > > choose arm and when to choose armeb" ? > > > > Thank you > > > AFIK, you can't run linux on an ARM TDMI with 64K of RAM :-) > > > Using the same endianess as your bootloader will save you from byte > swapping. If you can use the same endianness as the rest of your HW, > it will save the byte sapping operations and may make your system faster. > > > Some people prefer little endian, because other SW/ drivers has bugs on > little endian machines. > > > More about endianness you can probably get from googl'ing. > > -- > Karl > > > > > > > > --=20 Jean-Marc ------=_Part_23122_27958045.1223039078527 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Thank you,
 
All right, but actually I didn't buy this hardware yet, I'm ju= st investigating and ceating crossdev toolchain.
 
So, not possible to know what's the difference between 'arm= 9; and 'armeb' machines?
 
Cheers,
/JM

On Fri, Oct 3, 2008 at 1:53 PM, Karl Hiramoto <karl@hiramoto.org<= /a>> wrote:
Jean-Marc Beaune wrote:
> Hi,
>
> The details:
>
> - Processor: 16/32 = bit *AT91SAM7X256* (ARM7TDMI-S=99)
> - 256 K Flash
> - 64 K RAM=
> - USB 2.0
> - Ethernet 10/100 Mbits
> - 2 x RS-232
> - ADC (10 bits), CAN, 2 x UARTs, TWI(I2C), 2 x SPI, 3 x timers
>= 32bit, SSC, 4 x PWM, WDT, PDC (DMA)
> - Frequency up to  55 MHz=
> - JTAG connector (ARM's 2 x 10 pins - ARM-JTAG compatible)
= > - Color TFT 128 x 128 pixels
> - SD=99/MMC=99
> - Mini-joystick
> - Loudspeaker
> -= Audio input/output
> - Crystal 18,432 MHz sur support
> - RESE= T buton
> - Dimension: 128 x 98 mm
>
> The question is no= t specifically for this hardware but more "when to
> choose arm and when to choose armeb" ?
>
> Thank you<= br>>
AFIK,  you can't run linux on  an ARM TDMI w= ith 64K of RAM  :-)


Using the same endianess as your bootlo= ader will save you from byte
swapping.     If you can use the same endianness as the rest of y= our HW,
it will save the byte sapping operations and may make your syste= m faster.


Some people prefer little endian, because other SW/ dr= ivers has bugs on
little endian machines.


More about endianness you can probably g= et from googl'ing.

--
Karl









--=
Jean-Marc
------=_Part_23122_27958045.1223039078527--