The Mu shell, compiling down to a subset of 32-bit x86 machine code, then to a Linux ELF binary, packaged up with just a Linux kernel and nothing else, running on a Linux console emulated on Qemu, on a Thinkpad T420s running 64-bit Linux.

Just another 27 million lines of C to take out (Linux kernel), and I'll have a decent computing stack.

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I'm also thinking today about what it would take to fork Mu for the Raspberry Pi. It uses ARM processors, a 64-bit instruction since the Pi 3 which was released in 2015. The 64-bit ISA looks quite nice, but it's incompatible with the Pi 1 and Pi 2. Contrast x86, where 64-bit is quite compatible with 32-bit, but grotesque as a result, with bits for a register scattered across multiple bytes. So I might make the opposite choice to x86 and support just the 64-bit ISA. Thoughts?

https://developer.arm.com/documentation/den0024/a

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