FWIW I did my A Level on a ZX Spectrum 48K back in 1986 - and no one believes the kind of programming I did - machine code!

Also, Elite on the Spectrum is the only game I ever beat. Your rating was based on how many kills you had? Well, I used to play it so much, flyiing into anarchy worlds and witch space, that I over-shot it's counter and went beyond Elite. And all this only on a keyboard!

Ah, the old days...