Modded display drivers for Limbo PC emulator (QEMU)

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Lucss21a
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Modded display drivers for Limbo PC emulator (QEMU)

Post by Lucss21a »

I was running Mac OS X 10.1 (Puma) in Limbo PC Emulator (PPC) version 2.11.0. It's not the latest one but it's the one that runs the Mac OS X environment faster. So I was finding a modded qemu_vga.ndrv (with either 1280x720 and/or 1280x800 on it). Please help me out with this. Thanks in advance.
mcayland
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Re: Modded display drivers for Limbo PC emulator (QEMU)

Post by mcayland »

Lucss21a wrote: Sat Mar 05, 2022 2:12 pm I was running Mac OS X 10.1 (Puma) in Limbo PC Emulator (PPC) version 2.11.0. It's not the latest one but it's the one that runs the Mac OS X environment faster. So I was finding a modded qemu_vga.ndrv (with either 1280x720 and/or 1280x800 on it). Please help me out with this. Thanks in advance.
What do you mean faster? For just about all cases, newer versions of QEMU contain improvements to the JIT engine which result in better performance compared to older versions. Can you give more specific information about the versions you have tested, how you have measured the performance, and an approximation of the slowdown that you are seeing?
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Lucss21a
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Re: Modded display drivers for Limbo PC emulator (QEMU)

Post by Lucss21a »

mcayland wrote: Sat Mar 05, 2022 10:42 pm
Lucss21a wrote: Sat Mar 05, 2022 2:12 pm I was running Mac OS X 10.1 (Puma) in Limbo PC Emulator (PPC) version 2.11.0. It's not the latest one but it's the one that runs the Mac OS X environment faster. So I was finding a modded qemu_vga.ndrv (with either 1280x720 and/or 1280x800 on it). Please help me out with this. Thanks in advance.
What do you mean faster? For just about all cases, newer versions of QEMU contain improvements to the JIT engine which result in better performance compared to older versions. Can you give more specific information about the versions you have tested, how you have measured the performance, and an approximation of the slowdown that you are seeing?
I meant the boot times, in my experience, 5.1.0 boots Mac OS X like forever. 2.11.0 boots it around 40 minutes to an hour
mcayland
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Re: Modded display drivers for Limbo PC emulator (QEMU)

Post by mcayland »

Lucss21a wrote: Sun Mar 06, 2022 12:46 pm I meant the boot times, in my experience, 5.1.0 boots Mac OS X like forever. 2.11.0 boots it around 40 minutes to an hour
Hmmm 5.1 was the first release that used auto TB-sizing which perhaps doesn't work so well in a restricted Android environment (presumably ARM host?). What happens if you add

Code: Select all

-accel tcg,tb-size=128
to your command line? That should attempt to use the same default value as previous versions.

Some searching on the web suggests that Limbo isn't being supported anymore, which is likely to make further investigation hard.
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Lucss21a
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Re: Modded display drivers for Limbo PC emulator (QEMU)

Post by Lucss21a »

mcayland wrote: Mon Mar 07, 2022 10:35 pm
Lucss21a wrote: Sun Mar 06, 2022 12:46 pm I meant the boot times, in my experience, 5.1.0 boots Mac OS X like forever. 2.11.0 boots it around 40 minutes to an hour
Hmmm 5.1 was the first release that used auto TB-sizing which perhaps doesn't work so well in a restricted Android environment (presumably ARM host?). What happens if you add

Code: Select all

-accel tcg,tb-size=128
to your command line? That should attempt to use the same default value as previous versions.

Some searching on the web suggests that Limbo isn't being supported anymore, which is likely to make further investigation hard.
Limbo was recently updated by around 2021, altough unconfirmed if the original dev returned back on development. So I need a modded driver or some tutorial.
skjfhniasubcoivu
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Re: Modded display drivers for Limbo PC emulator (QEMU)

Post by skjfhniasubcoivu »

Lucss21a wrote: Sat Mar 05, 2022 2:12 pm I was running Mac OS X 10.1 (Puma) in Limbo PC Emulator (PPC) version 2.11.0. It's not the latest one but it's the one that runs the Mac OS X environment faster. So I was finding a modded qemu_vga.ndrv (with either 1280x720 and/or 1280x800 on it). Please help me out with this. Thanks in advance.
I've been running up to Mac OS X 10.5.6 in Limbo PPC 6.0.0 and I'm not sure why your boot times would be so slow because mine really aren't. as for custom resolutions, have you tried simply adding -g 1280x800x32 to Limbo? That does the job perfectly for me.
Last edited by skjfhniasubcoivu on Sat Mar 12, 2022 9:21 pm, edited 1 time in total.
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