Developer Tries Resurrecting 47-Year-Old 'Apple Pascal' (and its p-System) in Rust

Long-time Slashdot reader mbessey (a Mac/iOS developer) writes:As we're coming up on the 50th anniversary of the first release of UCSD Pascal, I thought it would be interesting to poke around in it a bit, and work on some tools to bring this "portable operating system" back to life on modern hardware, in a modern language (Rust). Wikipedia describes UCSD Pascal as "a version that ran on a custom operating system that could be ported to different platforms. A key platform was the Apple II, where it saw widespread use as Apple Pascal. This led to Pascal becoming the primary high-level language used for development in the Apple Lisa, and later, the Macintosh. Parts of the original Macintosh operating system were hand-translated into Motorola 68000 assembly language from the Pascal source code." mbessey is chronicling their new project in a series of blog posts which begins here:The p-System was not the first portable byte-code interpreter and compiler system - that idea goes very far back, at least to the origins of the Pascal language itself. But it was arguably one of the most-successful early versions of the idea and served as an inspiration for future portable software systems (including Java's bytecode, and Infocom's Z-machine). And they've already gotten UCSD Pascal running in an emulator and built some tools (in Rust) to transfer files to disk images. Now they're working towards writing a p-machine emulator in Rust, which they can they port to "something other than the Mac. Ideally, something small a" like an Arduino or Raspberry Pi Pico."

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