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Difference between revisions of "HOWTO-Debug-Endian-Issues"
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HOWTO-Debug-Endian-Issues (view source)
Revision as of 19:17, 22 October 2022
, 19:17, 22 October 2022→Linux big-endian PowerPC emulation with QEMU: highlight the CPU clock rate prerequisite, because it really makes a big difference
(→Linux big-endian PowerPC emulation with QEMU: highlight the CPU clock rate prerequisite, because it really makes a big difference) |
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* Modern versions of Debian are actually still built for big-endian PowerPC, but it's not a ''release'' architecture anymore, which means that it's only available through Debian ''unstable''. Debian unstable is harder to maintain than a stable release, and bugs/reliability issues often appear, especially on non-mainstream architectures. This is why we're sticking with a Debian 8 VM for now. | * Modern versions of Debian are actually still built for big-endian PowerPC, but it's not a ''release'' architecture anymore, which means that it's only available through Debian ''unstable''. Debian unstable is harder to maintain than a stable release, and bugs/reliability issues often appear, especially on non-mainstream architectures. This is why we're sticking with a Debian 8 VM for now. | ||
* '''3D games and audio content will be hard to debug''' on this environment, since QEMU only provides a limited, unaccelerated framebuffer, and no sound card support yet. Make sure that the ScummVM component you want to debug/test won't be impacted by this. | * '''3D games and audio content will be hard to debug''' on this environment, since QEMU only provides a limited, unaccelerated framebuffer, and no sound card support yet. Make sure that the ScummVM component you want to debug/test won't be impacted by this. | ||
* The bigger your CPU clock rate, the better: a 4 GHz CPU will bring noticeable improvement over a 3 GHz CPU, which is itself much better than a 2 GHz CPU, and so on. Note that QEMU emulation is mostly single-threaded, so having many CPU cores isn't really useful for this. | * '''The bigger your host CPU clock rate, the better''': a 4 GHz CPU will bring noticeable improvement over a 3 GHz CPU, which is itself much better than a 2 GHz CPU, and so on. Note that QEMU emulation is mostly single-threaded, so having many CPU cores isn't really useful for this. | ||
=== Starting the VM === | === Starting the VM === | ||