A bit of a bump, but Mihai fixed up Mac OS X. Now it displays properly (mostly). We've looked into BeOS a little bit and it seems to be quite the challenge, since it expects the 53c94 emulation to be accurate.


If it's any consolation I had the same issue with QEMU's ESP emulation and ended up ...

There's also the issue that we discovered the TCG emulator sets things up slightly different on ARM hosts (any ARM hosts) than it does on X86 hosts. In order to get 10.6 running at all on an ARM host, the installer needs to be run under QEMU on an x86 host first, and then the image moved over to ...

Compiled 9.0.0 just to be sure - and performance is back to 10-15 Mflops ...

Note, this is i686 (!) build by gcc 11.2.0


Note that i686 builds give much worse performance than x86_64 builds because i686 has only half the number of host CPU registers compared to x86_64 (I believe on i686 there ...

Well, there's a few things going on here. One is, audio emulation (in Mini vMac II and in QEMU-system-m68k) aren't fully functional; so under emulation, you're going to have audio sync issues. This has more to do with the audio buffer not being flushed at exactly the right time than it does with ...

Hi there!

I am happily using qemu-system-m68k on GNU/Linux, built from latest Qemu GIT sources, to emulate a Quadra 800.


Just to confirm this is the latest QEMU upstream sources at https://gitlab.com/qemu-project/qemu rather than my personal fork at github? Currently all outstanding QEMU 68k ...

In addition to that, can you also tell us the specs of your host?

Best,
Cat_7

Currently Windows 10 x64. I'll see if I can go 11 later.
8gb RAM.
Core i7 4.00GHz


That should be more than enough to run QEMU at a reasonable speed (my desktop workstation is about 8 years old), so you'll need to ...

35 secs to an open an app? That sounds completely broken: here on x86_64 the performance is good enough to provide a usable experience. Can you provide more information:

- What host architecture/OS are you using?
- What OS version are you attempting to boot? Where did you get the image from ...

So, it turns out the reason icons and the text won't show up is because the ntrb QuickDrawText trap isn't properly working (i.e. StdTxMeas, StdText). With this deleted, the text does show up. However, to delete it, you have to edit the PowerPC Enabler. I suspect there may be some CPU error ...

Hello, I've been thinking if I can make QEMU PPC fast, I tried everything.
Well, when I go with the memory towards 1008MB, It does an immediate kernel panic on boot.
Does anyone know how can i fasten it?

I've heard that Windows PPC is slow, but I can change the CPU model.
I did that, but it still ...

I think screamer branch is behind upstream qemu a bunch of commits, and has some bugs related to the build. I got it to build doing this:
0. Install needed depedencies (can vary from distro to distro)
1. git clone -b screamer https://github.com/mcayland/qemu.git qemu-screamer (do not do -r ...

Sorry, I am having a memory lane attack, and saw on mailing list for the q800 patch (https://lists.nongnu.org/archive/html/qemu-devel/2023-07/msg00114.html) that linux should be able to boot via EMILE. Has anyone figured out how to get it to boot, I can't get the toolbox rom (or qemu) to boot with ...

If you can find out which line the NMI on cuda should toggle and let me know, it's a reasonably trivial piece of coding to get this working.


From user powermax:

That depends on the I/O controller Cuda is attached to. NMI signal is active low on PC2.
Cuda's PC2 output pin is usually attached ...

Even when setting directories via the command line, I just can't seem to get QEMU to read from share/keymaps. It doesn't even throw a code.


Last time I built and tested on Windows I seem to recall that some of the paths were different compared to Linux - it has been a while though, so that ...

I'm running QEMU 8.1.0-rc1, but this problem has been around for at least a couple of years. Using MacsBug 6.6.3, there is a problem when stepping through PPC code. Note that 68k code does not have this bug. Whenever a branch is reached, MacsBug will jump to the address after the intended branch ...

The reason for the difference between BII and real hardware I suspect comes down to how BII handles disk images -- meaning, none of the actual hardware is emulated, and not even the actual disk structure is maintained -- BII works against the HFS partition directly.

This means that all the SCSI ...

You can always try booting to a minimal system with a copy of Disk FirstAid and try to repair the broken disk from there. It never worked for me, but it's worth trying.


Was it common to wreck your system partition upon a crash or improper shutdown on real Macs? Or perhaps Basilisk is prone ...

... okay, that's weird. Instead of using UTM, I decided to try it using qemu from homebrew, using the same command line you used and it took... 39 seconds with -accel tcg, almost exactly the same as yours. With -accel kvm I get an error message: "qemu-system-x86_64: -accel kvm: invalid accelerator ...

Just tried firing up my UTM VM on my i9 and timing it; it took approximately 8 minutes 20 seconds. It looks like UTM uses -accel hvf when "Use Hypervisor" is selected. With "Use Hypervisor" turned off, it switches to -accel tcg. There doesn't seem to be an obvious way to force it to use -accel kvm ...

I suspect that something Osy's done with version 4 has forced x86 hosts to use the TCG emulator as well. And with the switch to QEMU 8 for 4.3.x (still in beta), it appears all sorts of things have broken (PPC and x86_64 emulators). Some of those things appear to be broken in QEMU though, not ...

Yeah, and the x86 code for the TCG emulator must be bad. I know the M1 Max is faster than the old Core i9 Macs, but not this much faster.


QEMU's JIT is quite advanced, including its own optimiser, and is well-known to be one of the quickest around. What sort of numbers are you seeing? I have a ...

Mark, is the SDLC mode on the Modem port for 68k the same as in non-GeoPort pre-USB PPC Macs? Just thinking that this may be useful in a more mainline architecture that's already stable, and so may be able to get more eyeballs for non-OT serial communications.


I think it is, however QEMU uses ...

- Qemu (see above, the serial port spits out data if LocalTalk is configured, but I wasn't able to read proper LocalTalk frames yet)


(Disclaimer: I am the author of the QEMU 68k patches for booting MacOS)

The issue with QEMU and LocalTalk is that the ESCC serial emulation doesn't support ...

Latest commit seems to be commit f25b3476ee2621a637251439eaebf357970f7638 (HEAD -> q800.upstream2-vm, origin/q800.upstream2-vm)

i think that's the latest release on github too

Host os is Linux Mint 21.1, cpu is Ryzen 7 7700X

ran that exact same script, background was green this time but same ...

It seems to be an issue with the cdrom, I get to the "you need a cdrom screen" with the floppy however when I add the cdrom it gets to that same grey screen.


Can you confirm the branch and version you are using with "git log", along with your host OS and CPU?

I just did a test boot of the ...

I'm trying to rename the hard drive in my Mac OS X guest, but when I try to type the name, QEMU doesn't take the keyboard input at all.

Config:
qemu-system-ppc.exe ^
-L pc-bios ^
-cpu G4 ^
-M mac99 ^
-m 512 ^
--drive file=macosx100.img,format=qcow2,index=0,media=disk ^
-drive file=macosx100 ...