When using the BocaRam AT/PLUS with DOS 5.0.  Before you run the AT/PLUS
installation software boot from a plain DOS disk (no autoexec,config.sys).
After DOS 5.0 is running with the AT/PLUS board and you want to run our
BRATMEM program to determine the total memory on your system, you must
boot from a plain DOS disk before you run BRATMEM.  This is necessary
because if DOS' HIMEM.SYS is loaded when you run BRATMEM it will
report back erroneous results.