the first thing i wrote on my sinclair zx81 was a space shooter in basic that used print at to move ships around the screen. it was so laggy it was impossible to play. i didn't know z80 machine language. the last thing i wrote on my zx81 was a z80 disassembler—by then i'd learned machine language and had rewritten the space shooter, as well as written a text-based adventure game (in basic). i learned a lot about programming for $99.

rip clive sinclair

#zx81 #sinclair