The Super PC/Turbo XT BIOS is heavily modified version of the widely-distributed "(c) Anonymous Generic Turbo XT" BIOS. It is a drop-in replacement for the IBM 5150/5155/5160 BIOS and most XT clones, including 8/10 MHz turbo systems.
Besides fixing several bugs from the Generic BIOS, many additional features have been added, including CPU/FPU detection, fast memory checking, UMB initialization, expansion ROMs in the F000-FE00 region, ROM BASIC boot option, 101-key enhanced keyboard support, and more.
All the tools required to modify and build the BIOS in are included, in DOS, Windows, or Linux.
Version 3.1 Changes:
IBM 5150 PC config switches corrected (previously had problems with CGA and/or FPU)