2026-05-17
Porting a PC-9801 N88-BASIC game to iPhone — a 100-line Bēmaga tennis game, 30 years later
There was an 80s Japanese hobby-programming magazine called Microcomputer BASIC Magazine (everyone called it Bēmaga). I took a tennis game printed in it, originally for PC-9801 in N88-BASIC, and ported the whole 100 lines to iPhone — same physics, same trig table, plus a Genetic Algorithm CPU opponent.