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MacOS supports developing Flutter apps in iOS, Android, and the web.All versions of this emulator emulated the 'user' subset of the Motorola 68EC040 instruction set with a 68020/68030 exception stack frame. Macintosh OS X 10.2 (Jaguar) with Microsoft Internet Explorer 5.2 and Apple Mail.Important: If youre installing on a Mac with the latest Apple M1 processor. Macintosh OS 9.2 with Microsoft Internet Explorer 5 and Outlook Express 5.

Dynamic recompilation works by 'recompiling' common sections of the code into faster, PowerPC-native, sequences that were locally cached. For the PCI PowerMacs, the dynamic recompilation emulator was used to boost performance. Early versions emulated it by decoding each instruction and immediately carrying out a series of equivalent PowerPC instructions.

This also allowed Apple time to port the OS to the PowerPC. In the emulator, such traps could be replaced by native PowerPC code, so the only code being emulated was the application itself, and any system API it called could be accelerated with native PowerPC code. In turn, this vector would look up and run the operating system routine from ROM or RAM. The 68LC040 had no floating point instructions, making this feat slightly simpler but no less impressive.One reason that this emulation was so successful is that many of the APIs for the Mac OS were originally implemented as traps on the 680x0 processor therefore, calling an API actually was recognised by the 680x0 as the equivalent of an error condition, which would cause it to handle that error through one of its hardware vectors. This emulator was theoretically capable of emulating 680x0 code faster than any real 680x0 was capable of running it.

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Native Mac OS X outside of Classic never used the emulator. PowerPC Macintosh emulators such as SheepShaver therefore use the emulator as well when running the classic Mac OS. This meant that dealing with the dual architecture required very little work for the programmer, and just like the OS, applications themselves could mix and match 680x0 and PowerPC code fairly easily.Because it was built into all PowerPC versions of the classic Mac OS, the emulator was also part of the Classic environment in Mac OS X.

Rosetta 2, a similar feature in macOS that translates x86 instructions to Apple Silicon instructions. Rosetta, a similar feature in Mac OS X that translates PowerPC instructions to x86 instructions.

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