Comments on: Using Qemu in 2020

By: gregwtmtno

gregwtmtno — Tue, 31 Mar 2026 21:14:33 +0000

In reply to AdamS. Adam, I know you posted this years ago, but can you share your piix interrupt timeout patch? Much appreciated!

By: Sean

Sean — Mon, 15 Feb 2021 06:39:31 +0000

In reply to Astromike. Hey Astromike, I'd love to take a look at that patch!

By: neozeed

neozeed — Wed, 16 Sep 2020 00:35:08 +0000

In reply to AdamS. I don't recall seeing anything, and I don't have any twitter to try to communicate. You would have to try there, if you are permitted

By: AdamS

AdamS — Mon, 14 Sep 2020 21:26:43 +0000

In reply to neozeed.

Hi neozeed, Did you get any response from Astromike for adapted Michael Engel’s NeXT busmouse patch to the newest qemu? It would be great to have this available somewhere.

I just tried to run Rhapsody with latest qemu. I managed to get though dreaded PIIX “Interrupt timeout” patching hw/intc/i8259.c, but I got stuck at PS/2 mouse that is jumping randomly in qemu.

So the most straightforward workaround would be busmouse support updated for latest 5.x qemu. But I lack time and skills to do it 🙁

Cheers, Adam.

By: Lorenzo

Lorenzo — Mon, 17 Aug 2020 08:36:01 +0000

> For additional fun, the serial port can be set to a MS Mouse port, although I haven’t tested it as of yet.

I have, and I don’t think it works, but I can’t tell why. I’m trying to not dig into qemu+CuteMouse’s source code myself… not again/more.

I opened a bug in the bug tracker ( https://bugs.launchpad.net/qemu/+bug/1888663 ), but I assume it’s really low on the priority list. If anyone can get it working, I’d be happy to hear it!

By: neozeed

neozeed — Thu, 13 Aug 2020 08:26:47 +0000

In reply to Astromike.

Id be MORE than happy to host the patch, and go over it.

I like sourceforge as it’s been around for eons, so it’s not trendy and will probably be around a bunch more (they got new owners and fired the guy that did the trojan shit, and removed it everywhere, although I know in the PR space the damage is done)…

you can email me with my user @gmail.com

By: Astromike

Astromike — Thu, 13 Aug 2020 02:02:52 +0000

Sorry, I am coming late to this post, but I also wanted to chime in here. I’ve actually had good luck with the newer versions of QEMU, though stability and speed really seems to depend on what you are doing. For example, for reasons I can’t quite understand FreeDOS seems very sluggish (which seems counterintuitive to me, but whatever.)

I just wanted to add that I recently adapted Michael Engel’s NeXT busmouse patch to the newest release candidate (5.1.0-rc3). With the OpenStep 4.2 update and its VESA driver you get a visually pretty setup. It still seems a little wobbly at times, but it is workable. I haven’t had time to fight with the network card, but I hope it can be figured out.

I’m not sure if someone else has done this, but if not I’d be happy to share the patch. Alas, I don’t have a place to stick it on the web. Neozeed, maybe you could help there if you think it could have some value.

Cheers!

By: neozeed

neozeed — Sun, 02 Aug 2020 06:18:10 +0000

In reply to DOS.

Yes it is… kind of showing off why you have gigabytes of stuff to orchestrate command line flags now.. This isn’t even touching things like differential disks, and things like shared memory busses and all the other fancy stuff.

I’m getting into the “-net none” type habit as of late, along with turning off serial & parallel as it just wastes resources.

Qemu doesn’t care about legacy stuff, so we are always at their trendy whims.

By: DOS

DOS — Sun, 02 Aug 2020 03:57:17 +0000

I’m not much of a fan of the new Qemu syntax. The old syntax for specifying drives was much more terse, whereas now I have to remember the extra words to tell it it’s a raw disk image instead of it just guessing that. Also the default NIC has meant that I accidentally exposed something to the Internet that I didn’t want to, and it’s not as simple as putting a wrapper script around it because I have a lot of different versions floating around.

By: Bruno Castelló

Bruno Castelló — Sat, 01 Aug 2020 05:47:50 +0000

Sounds fun. I have two vintage VMs, DOS622/Win3.11 and Win98 for gaming on both VMware and UTMapp (QEMU gui on iOS) and I have been trying hard to understand that syntax for a bit more modern VMs such as Win XP and 7, using homebrews QEMU 5 on my Mac. Not having very good luck so far in terms of speed.

I also plan to try and build old macOS Snow Leopard and System 7 or macOS 9.x with QEMU just for fun. I’ve never used the last two as a kid. What about OS/2 Warp? I remember my dad using it one day. All I want is to ditch VMware for good and understand better the QEMU things. The only reason I am still on VMware is because of Grand Prix 4 game, supposed to run on XP with ease (as a kid, I do remember playing it with XP!!) but it could only run in W10 VMware VM. Oh dear.

Anyway I’m able to play GP2 and GP3 which is awesome for now. And trying to find time, peace and concentration to remember how I used to code things in VB3 with Win3.11.