[prev in list] [next in list] [prev in thread] [next in thread] 

List:       openbios
Subject:    Re: [OpenBIOS] QEMU + MacOS
From:       Howard Spoelstra <hsp.cat7 () gmail ! com>
Date:       2016-02-26 22:59:45
Message-ID: B3155A3C-C1E7-4796-BA32-0D5C0F83ABCD () gmail ! com
[Download RAW message or body]


> On 26 Feb 2016, at 23:54, Programmingkid <programmingkidx@gmail.com> wrote:
> 
> 
> On Feb 26, 2016, at 5:06 PM, Hervé Poussineau wrote:
> 
> > Le 13/02/2016 13:40, Mark Cave-Ayland a écrit :
> > > On 13/02/16 12:08, Alyssa Milburn wrote:
> > > 
> > > > On Sat, Feb 13, 2016 at 11:25:49AM +0000, Mark Cave-Ayland wrote:
> > > > > Hmmm interesting - I'll take a look a bit later. In the meantime, I've
> > > > > uploaded the CD image I'm loading to
> > > > > https://www.ilande.co.uk/tmp/openbios/MacOS921.iso.xz. This is basically
> > > > > stripped of all extensions minus MacsBug, OT and OT ASLM modules.
> > > > > 
> > > > > I'm using an OpenBIOS binary built from the branch I pushed to github,
> > > > > current QEMU git master and the following command line:
> > > > > 
> > > > > ./qemu-system-ppc -M mac99 -bios openbios-qemu.elf.nostrip -cdrom
> > > > > MacOS921.iso -cpu G3 -boot d
> > > > > 
> > > > > Let me know if that helps you recreate a similar environment or not.
> > > > 
> > > > I also still just get crashes, even with your image. :-( I've tried
> > > > several compilers for both the OpenBIOS side and qemu.
> > > > 
> > > > I wonder if it might be some timing problem.. I have pretty slow computers
> > > > probably (mostly I use a 2.4GHz Core 2 Duo), are you using something
> > > > (dramatically) faster?
> > > 
> > > I'm using a 1.8GHz Core 2 Duo laptop, so mine should be slower than
> > > that! My setup is plain Debian wheezy (gcc 4.7.2) but with a
> > > custom-built 4.1 kernel. Compilers for OpenBIOS I have built by hand and
> > > my current cross-gcc is gcc 5.1.0.
> > > 
> > > I do have a couple of extra options in my build-ppc.sh script below -
> > > not sure if they make any difference though.
> > > 
> > > build@kentang:~/src/qemu/git$ cat build-ppc.sh
> > > 
> > > #!/bin/bash
> > > 
> > > pushd qemu
> > > make distclean
> > > 
> > > STRIP= './configure' '--target-list=ppc-softmmu'
> > > '--prefix=/home/build/rel-qemu-git' '--enable-gtk' '--disable-pie'
> > > 
> > > make -j2 V=1 install
> > > popd
> > > 
> > > I've also uploaded my OpenBIOS binary image which I've just confirmed
> > > with git master and my debugging enabled still gets stuck in the ESCC
> > > polling loop to http://www.ilande.co.uk/tmp/openbios/openbios-ppc-escc
> > > if that helps.
> > > 
> > > 
> > > HTH,
> > > 
> > > Mark.
> > > 
> > > 
> > 
> > Hi,
> > 
> > I tried to use MacsBug to find some more details about current emulation \
> > problems. I share with you some handful commands I found:
> > - sc/sc7 (Stack Crawl) to see the stack trace
> > - es (Exit Shell) to exit MacsBug and try to continue
> > - ip [addr] (68k code) or ipp [addr] (ppc code) to disassemble around some \
> > addresses 
> > Full MacsBug manual is available at
> > https://web.archive.org/web/20110605022118/http://developer.apple.com/tools/debuggers/MacsBug/Documentation/MacsBugRef_6.2.pdf
> >  
> > I've tried lastest OpenBIOS revision (with all ESCC fixes). Unfortunately, MacOS \
> > never tries to access unimplemented DBDMA channels and I was unable to find more \
> > hints about what's happens. 
> > However, with https://www.ilande.co.uk/tmp/openbios/MacOS921.iso.xz and exiting \
> > MacsBug with 'es' command, I'm able to browse cd contents :) 
> > Hervé
> 
> Thank you for this information.
> 
> Well it looks like we are stuck. For some reason Mac OS 9 will not successfully \
> boot in QEMU with the OpenTransport extension. Are we even sure the ESCC is to \
> blame? I do know a lot of applications depend on this extension. Internet Explorer \
> and Netscape are two examples. So going without it is not going to be much fun. \
> There must be some way to satisfy OpenTransport's needs. I think step one is \
> actually finding out what those needs are.  
> Also for some reason when I try to type something into Macsbug when using it under \
> Mac OS 9.0.4, the character is repeated to the end of the field. Anyone else see \
> this issue?  
For me the repetition issue only occurs in Mac OS 9.1, but then all 9.0/9.0.4 images \
                I have crash Qemu before this point.
-- 
OpenBIOS                 http://openbios.org/
Mailinglist:  http://lists.openbios.org/mailman/listinfo
Free your System - May the Forth be with you


[prev in list] [next in list] [prev in thread] [next in thread]