DS>
  > Since that last time (a couple(?) of years ago) that I ran CV
  > successfully, I have recently upgraded to an Intel 486DX4-66, from an
  > Intel 486DX33, and added 16 meg-o-ram, for a total of 20meg, on a clone
  > ISA system.
  >
  > I had been running the F16 Falcon simulator in both native-DOS and a VDM
  > until the upgrade.  The simulator stops after the opening screen and
  > some music: the whole system is hung, as it is w/ CV.
DS>
  This is symptomatic of a hardware problem.  There is some problem with
  your memory, your motherboard, or your new CPU.
  If there's a truism in the PC world, it's that standard hardware is
  never standard.
  Sorry that I cannot be more specific, but over the years such "total
  machine freeze" problems have been traced to such diverse causes as
  using the wrong Pentium Overdrive chip or mixing different types of
  SIMMs.
  The wrong Pentium Overdrive chip, for example (which was an incident
  over in the Ilink OS/2-Support conference), caused the system to lock up
  whenever an application tried to use floating point arithmetic.  It
  turned out that the only app that the bloke had on his machine that
  *used* floating point was the small DOS application that he was working
  on for his C++ course.
  So I'm not really surprised that only a few of your applications exhibit
  problems.  Not all applications use all parts of your machine.
  > JdeBP <
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