From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Christian T. Steigies" Subject: Re: Linux/m68k on the Apollo FPGA softcore? Date: Fri, 5 Feb 2016 16:15:21 +0100 Message-ID: <20160205151521.GA22021@nunzio.venus.sol> References: <56B36771.9010006@physik.fu-berlin.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-in-05.arcor-online.net ([151.189.21.45]:33951 "EHLO mail-in-05.arcor-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752872AbcBEPPY (ORCPT ); Fri, 5 Feb 2016 10:15:24 -0500 Content-Disposition: inline In-Reply-To: Sender: linux-m68k-owner@vger.kernel.org List-Id: linux-m68k@vger.kernel.org To: Kolbj?rn Barmen Cc: John Paul Adrian Glaubitz , linux-m68k@vger.kernel.org On Fri, Feb 05, 2016 at 03:49:53PM +0100, Kolbj?rn Barmen wrote: > On Thu, 4 Feb 2016, John Paul Adrian Glaubitz wrote: >=20 > > On 02/02/2016 06:16 PM, Kolbj=F8rn Barmen wrote: > > > From what I understand, the core implements a new FPU, not > > > compatible with existing FPUs, and there has > > > been talks about a new MMU implementation too.=20 > >=20 > > Well, that would be too bad given the fact that there is already a = huge > > number of applications and kernels which work with the old FPU/MMU > > combination. >=20 > Sure, but the idea is to move forward from what I understand. >=20 > > I'd buy such an accelerator in a heartbeat, but it should be binary > > compatible with existing 68020+ code. >=20 > Apparently it will be usermode compatible with all existing 68k, but = not > supervisor mode compatible, not MMU compatibale, not FPU compatible. = And > it is already blazingly fast compared to most 68060 systems, without = any > optimization done. >=20 > I guess it will be an AmigaOS only CPU core :) =46rom what I read it will replace only the CPU, so you still need the = old, fragile Amiga/Atari/Mac hardware around it? It would be great, if this = could be included into a minimig or MiST to replace all of the old hardware a= nd allows you to use a readily available USB mouse and keyboard. Then it would be a new system m68k and "somebody" could write a new ker= nel for this, with drivers for the FPU/MMU, instead of splitting the amiga architecture into two incompatible ones. MiST is working great with AOS= , TOS, and I would love to have an m68k machine that can boot off an SD c= ard instead of a floppy disk (until you install some drivers on a IDE or SC= SI harddisk since nothing newer is directly supported). But the nice thing about the FPGA computers is, everybody can write his= own core, so we only need to implement the original MMU/FPU in an FPGA ;-) Christian