From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59417) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a07Ns-0004UT-Af for qemu-devel@nongnu.org; Sat, 21 Nov 2015 07:35:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a07Nr-0000j1-99 for qemu-devel@nongnu.org; Sat, 21 Nov 2015 07:35:16 -0500 Message-ID: <565064DC.9010707@ilande.co.uk> Date: Sat, 21 Nov 2015 12:34:36 +0000 From: Mark Cave-Ayland MIME-Version: 1.0 References: <898E5F5D-EC63-4FC2-A1CC-5F5AEE1D5708@gmail.com> <564249E4.8000604@ilande.co.uk> <564380D5.9050401@ilande.co.uk> <27CBEB2D-071F-424B-B837-93F767CBE6B6@gmail.com> <5643B3D3.1030907@fgznet.ch> <08BF37A4-20D2-4A34-BC26-17B199A160E7@gmail.com> <9C20BDB0-7458-44E8-B3DC-AABD88FE72DB@gmail.com> <20151120033338.GA1554@gate.crashing.org> In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [OpenBIOS] [Qemu-ppc] CUDA has problems with Mac OS 10.4 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: BALATON Zoltan , Alfonso Gamboa Cc: Segher Boessenkool , qemu-devel qemu-devel , Programmingkid , "qemu-ppc@nongnu.org list:PowerPC" , Andreas Tobler , The OpenBIOS Mailinglist On 20/11/15 22:40, BALATON Zoltan wrote: > On Fri, 20 Nov 2015, Alfonso Gamboa wrote: >> booting into MacOS9 with qemu to the Desktop is now possible, see: >> >> http://www.emaculation.com/forum/viewtopic.php?f=34&t=7047&start=250 > > Very nice. > >> On Nov 20, 2015 7:46 AM, "Programmingkid" >> wrote: >>> I use to have the same belief until Mark set me straight. We are only >>> making an emulator of a new world Mac, not a simulator of a PowerMac3,1. >>> This means we might be able to get away with not exactly mirroring a >>> real >>> Mac. The fact that Mac OS 9 can boot up at all does give me hope we >>> are on >>> the right path. > > I'm clear on that but what I've meant was that we probably have to make > a closer emulation of the real PowerMac (not one to one but close > enough) to make OSes written for that hardware happy. I think we are > missing some i2c and gpio emulation that these OSes might expect but I'm > not sure. > > One thing that might help to hint at what's missing is to compile QEMU > with DEBUG_UNASSIGNED (this will generate a lot of logs) and try to find > out what is accessed that is not emulated. Just to clarify here that this doesn't mean that I'm unwilling to accept patches that move the device model more towards a real Mac, only that any such patches must provide replacements for any new peripherals introduced so that during the transition there is no loss of functionality. ATB, Mark.