logoalt Hacker News

zabzonkyesterday at 10:34 AM1 replyview on HN

Yes, it was definitely a thing. The patching code had to be in Z80/8080 machine code. I wrote higher performance keyboard and display routines for my copy of Wordstar using this feature.


Replies

Semaphoryesterday at 11:28 AM

Stuff like that is also cool (reminds me a bit of modding some games), patching machine code to improve performance of a compiled app? Very cool! (My dad might have done that, he has an old ZX81)

But I thought specifically patching something to configure it is such a weird concept that I never would have thought of.

show 2 replies