Original SA-1 enhancement chip leads to 2-3x speed improvement on real SNES hardware.

Many gamers of a certain age remember the early 90's disappointment of buying the SNES version of hit arcade shmup Gradius III.

In magazine screenshots, the game's huge, colorful sprites were a sight to behold, comparable to the 1989 arcade original. In action, though, any scene with more than a handful of enemies would slow to a nearly unplayable crawl on the under powered SNES hardware.



Now, Brazilian ROM hacker Vitor Vilela has righted this nearly three decade old wrong with a ROM patch that creates a new, slowdown free version of the game for play on SNES emulators and standard hardware.



https://arstechnica.com/gaming/2019/...s-gradius-iii/