This is using MAME c6cdeb1e4af49e3e7c4bc41f761e0e956097ee82 but on i686 system (Slackware 15.0)

I wonder if this strange stripping background in Demos page (second and next ones) from 7.1.2 CD actually bug or just known imprefection?




I think this is bug in mame (may be only on ILP32 host ...

This is using MAME c6cdeb1e4af49e3e7c4bc41f761e0e956097ee82 but on i686 system (Slackware 15.0)

I wonder if this strange stripping background in Demos page (second and next ones) from 7.1.2 CD actually bug or just known imprefection?



Second page in Demos works with second display set to ...

This is using MAME c6cdeb1e4af49e3e7c4bc41f761e0e956097ee82 but on i686 system (Slackware 15.0)

I wonder if this strange stripping background in Demos page (second and next ones) from 7.1.2 CD actually bug or just known imprefection?

Does it behave the same on ILP64 ?


https://files.mastodon ...

Yes, lovely, isn´t it? have you also tried the usb-audio fix?

Best,
Cat_7



No, not yet. I hope to restore some tracing lines from smp patch first. (I applied pieces with plain patch, so they just hang there uncommited)


Tried it.


https://files.mastodon.online/media_attachments/files ...

Cat_7 wrote: Fri Feb 13, 2026 8:12 am Yes, lovely, isn´t it? have you also tried the usb-audio fix?

Best,
Cat_7

No, not yet. I hope to restore some tracing lines from smp patch first. (I applied pieces with plain patch, so they just hang there uncommited)

Yes, it works with 4 cpus in Leopard! (qemu compiled on Linux with patches, openbios from experimental Qemu zip from 08 feb 2026)

sorry fort BIG PICTURE, can't find spoiler tag o.o

I found "maconv" project, but not sure if it works correctly (tried to extract macbinaryIII format NewWorld rom file, it seems to work, but result is not that DPPC expects ..)

https://www.macintoshrepository.org/download.php?id=9746

https://github.com/ParksProjets/Maconv/

Github page contain ...

from 2021, not sure how well it work with this year's qemu

https://github.com/knazarov/homebrew-qemu-virgl

ref.
https://gist.github.com/akihikodaki/87d ... 07ec5a1bc5

darthnvader wrote: Sat May 17, 2025 5:44 pm
[...]

Device: llvmpipe (LLVM 15.0.6, 128 bits) (0xffffffff)

this is software 3d. I had some success on i586 with -display sdl,gl=on not sure how well it will works for aarch64 guest/host .... I failed to compile virglrenderer for macos (10.13) so no gl on mac host for me.

A new experimental build enabling dual cpu support has been added to the second post in this thread.

Best,
Cat_7


I've noticed an impressive speed/performance boost in my Mac OS 10.4.11 Qemu VM :shock: :mrgreen: Any chance to get a dual-core build but with sound support too?

Andrew_R has ...

[...]

Kind of a moot point anyway, as the graphics stack is hopelessly broken in PPC Big Endian upstream anyways, but runs just fine with PPC Little Endian. So if folks want to run PPC linux they can just use the pSeries machine in qemu-system-ppc64.


Well, older Linuxes also exist, at Debian 8 ...

a bit more experimentation.
I replaced guts of ~2023 efi image (LegacyDarwinKVM.qcow2) mostly with content of OpenCore-1.0.2-DEBUG.zip (left uefi drivers, acpi table/patch and config.plist).

And it still boots on hvf!

So, something in old config, or older OpenCore was upsetting especially hvf ...

proof it works:
https://youtu.be/oDNw4_6tHLU

I run into weird problem/bug, but it was coldly received at QEMU upstream

https://gitlab.com/qemu-project/qemu/-/issues/2646



fixed this by using other openCore qcow2 file. But it does not work on my AMD machine with kvm, so I think I'll keep them both.

https://github.com/royalgraphx ...

I run into weird problem/bug, but it was coldly received at QEMU upstream

https://gitlab.com/qemu-project/qemu/-/issues/2646

Basically VM (qemu 9.0.3) works with Linux, netBSD, HaikuOS, Win10 - but NOT with specific installed image of 10.6.8 (intel) if I enable accel hvf
It works with tcg o.O

It ...

Build was ok (on Slackware 15.0 i586/x86-64 hybrid).

For some reason build with just pure alsa was not starting, so I ran pulseaudio-enabled build with apulse and it currently plays an internet radio with self-compiled mplayer!

It probably must be noted that currently Screamer only goes as 44100 ...

Just out of curiosity I downloaded latest branch:

https://github.com/mcayland/qemu/commits/screamer-v9.0.0/


git clone --depth 15 https://github.com/mcayland/qemu -b screamer-v9.0.0

cd qemu

git format-patch -o screamer-v900 760b4dcdddba4a40b9fa0eb78fdfc7eda7cb83d0


this will give you ...

just to say I compiled Openfirmware with this patch (using cross compiler in Debian 11 x86-64 VM)


diff --git a/arch/ppc/qemu/init.c b/arch/ppc/qemu/init.c
index 253394c..7b7b09d 100644
--- a/arch/ppc/qemu/init.c
+++ b/arch/ppc/qemu/init.c
@@ -348,8 +348,9 @@ cpu_add_pir_property(void)
unsigned ...

More bench data, using sandybridge laptop runnig x86-64 Slackware as host:


Results 2.91
System Info
Xbench Version 1.3
System Version 10.4.11 (8S165)
Physical RAM 512 MB
Model PowerMac3,1
Processor PowerPC G4 @ 900 MHz
Version 7400 (Max) v2.9
L1 Cache 32K (instruction), 32K (data)
Bus ...

I bothered comrade Zoltan about this , he suggested to post my question to broader audience
so ... wall of text from my yesterday research


>>>>> https://opensource.apple.com/source/xnu/xnu-344.49/osfmk/ppc/POWERMAC/mp/MP_2p.s.auto.html
>>>>>
>>>>> talks about Daystar SMP machine.? Not sure if ...

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 ...

also, strictly from "because it still works" I tried to use MacOS X 10.4.11 Xdarwin (Xfree 4.4.0) server) for displaying program we maintain - Cinelerra-GG:

I used "-ac" flag for disabling access control on xserver side (because I am too lazy for xauth) and on host side I used e16 as window manager ...

anyone still have qemu with them applied around ..?

Sure, but only for windows and macOS hosts:
MacOS Qemu 7.1: https://surfdrive.surf.nl/files/index.php/s/G1fpiaPRpgx5XRs/download
Windows Qemu 6.2: https://surfdrive.surf.nl/files/index.php/s/4eDBqB8DunW9QT2/download

Please note both also have ...

Cmd line


qemu-system-ppc -m 1024 -M mac99,via=pmu -hda ~/QEMU/osx-tiger_10.4.11_installed-compressed.qcow -cpu G4 -boot c -accel tcg,tb-size=256 -g 1368x768x32 -display sdl,gl=on -device intel-hda -device hda-duplex -nic user,hostfwd=tcp:127.0.0.1:6001-:6000 -cdrom ~/ISO/ansib_bench.iso


sadly ...

Not as far as I'm aware -- it does USB passthrough, but I don't think a Firewire device is ever set up?

That said, there's https://github.com/pdmccormick/qemu-firewire-ohci/ -- and I can see a number of similar projects dating back to 2009.

And the QEMU docs pull up GSOC 11 and GSOC 12 projects ...