June 6, 1993

MS-DOS version 6 Users BEWARE !!

There are numerous BUGS in MD-DOS version 6.  I have been advising my
consulting clients to stay away from it.  Clipper programs in particular
are having trouble with DOS 6.  Clipper and the DOS 6 Virtual Memory
Manager don't 'see' each other, causing the problems.

Clipper Summer '87 programs will report 'out of memory' under DOS 6.
Clipper Version 5.01 through 5.1b will simply lock up the computer.
Clipper Version 5.2a as far as I know is O.K. on the memory issue.

There are many different solutions, here are some:

If you are using the DOS EMM386 memory manager add NOVCPI to the command line.
Edit the file C:\CONFIG.SYS and change:

      DEVICE=C:\DOS\EMM386.EXE NOEMS

      to

      DEVICE=C:\DOS\EMM386.EXE NOEMS NOVCPI

Or use the MS Windows memory manager, again edit CONFIG.SYS and change from
the DOS memory manager to Windows:

      DEVICE=C:\WINDOWS\EMM386.EXE NOEMS

Or use the CLIPPER environment variable to turn off EMS memory usage,
BLINKER users can burn this into the .EXE .

      SET CLIPPER=Fnnn;E0

Where nnn is the number of file handles the Clipper program will require.
The E0 tells Clipper not to use any EMS memory.