For the NEAT chipset there's a DOS tool to set the various fancy chipset registers, even if the BIOS does not expose them. Is there such a tool for SCAT as well? That would make me less dependent on the BIOS I'm currently using. There's a DMA-related setting the chipset registers that isn't exposed in most BIOSes, but it needs to be toggled from its default for it not to eat floppy disks for all meals of the day.

If such a thing existed, I'd be willing to play more with alternate BIOSes..