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1. I wrote a markdown file with the specification of what I wanted to do. Just English, high level ideas about the scope of the Z80 emulator to implement. I said things like: it should execute a whole instruction at a time, not a single clock step, since this emulator must be runnable on things like an RP2350 or similarly limited hardware. The emulator should correctly track the clock cycles elapsed (and I specified we could use this feature later in order to implement the ZX Spectrum contention with ULA during memory accesses), provide memory access callbacks, and should emulate all the known official and unofficial instructions of the Z80.
Beagle Bros’ tools were fantastic. They literally let you do the (allegedly) impossible, like change the names of operating system commands. And they always packed the disks full with extra stuff. Demos of their other products, and strange graphics hacks that existed for no reason other than the fact that they were cool, and because there was spare room on the disk. Beagle Bros. had a lot to do with why I ever wanted to learn programming in the first place. […]
The platform focuses on practical communication rather than memorizing vocabulary lists. Lessons are short — about 10–15 minutes — and structured around real situations: transportation, dining, shopping, introductions. You learn the sentences you actually need instead of academic filler.