A modern, scratch-built, open-source (GPLv3) alternative ROM BIOS for PC, XT, 8088 Clone or Turbo PCs.
I've been using it recently on a machine that formerly used a tweaked version of the "Anonymous Super Turbo XT BIOS" and it offers subtle, modest improvements.
In my narrow experience, it fixed some freeze issues with Civilization when using a NEC processor, and the boot display is clean and more informative.