I have discovered a NASTY problem in the UDMA2/UDMA2S drivers.
    The stack-switch logic in those drivers could cause a CRASH on
    a Non-Maskable Interrupt (NMI)!   Although no-longer active in
    FreeDOS, my "ethics" force me to release the file UDMA2_27.ZIP
    containing V2.7 UDMA2/UDMA2S and V8.2 UDMA/UDMAJR, which fixes
    this problem.   Users of UDMA2 and UDMA2S should update to the
    V2.7 drivers IMMEDIATELY, as the NMI problem in older versions
    is CRITICAL!!   UDMA/UDMAJR users do not need to update, since
    those drivers have no changes except version and date.

Jack Ellis