The MSR (Machine State Register) is hardcoded in Sheepshaver too. Sheepshaver does numerous ROM patches to avoid having to emulate the MMU (or most of the registers involved) at any cost. The PowerPC CPU is rather complex, probably not as bad as a x86 CPU emulator, but definitely not trivial either. I do realize a good chunk of Mac users aren't coders, but that doesn't mean coders won't have a huge number of obstacles too. Popularity aside, there's plenty of technical difficulties regarding Mac emulation. Since QEMU has is pulling way ahead of Sheepshaver and PearPC in terms of hardware accuracy (it can emulate PPC Mac OS 9.1-10.4), I figured I would have a go at describing the issues of writing a PPC Mac emulator, including by comparing it to the other PPC emulators that are known to be able to run PowerPC Mac OS Classic or X. Join us at /r/EmuDev Android Emulator accuracy tests:Īre you an emulator developer? Send the moderators a message if you'd like a user flair reflecting that. Game recommendations: /v/'s Recommended Games Wiki r/SBCGaming - Single Board Computer Gaming (Raspberry Pi, etc) r/EmulationOnPC - For PC and Mac emulation troubleshooting and support r/EmulationOnAndroid - Android emulation and troubleshooting General Computers Handhelds Consoles Nintendo Browse All FAQ Discussion Links Posts asking which games are playable/what the emulator is called/where to get it will be removed.

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Mac powerpc emulator