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MOREDOS.DOC
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1987-11-05
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PROGRAM: MOREDOS.COM
AUTHOR: Keith P. Graham
CONTACT: PC-Rockland BBS (914) 623-2176
DESCRIPTION: MOREDOS is another variation on a series of utilities to
increase the DOS limit above 640k. This works with ordinary memory
cards for PC/XT's. On PC's set the memory switches as low as possible
and then run MOREDOS. This will prevent the DOS memory count which
can take so long. This is not applicable to XT's and clones which
have no switches for memory. This will work on both PC's and XT's
which have memory expansion cards which are switch selectable to
address memory above 640K, Set the boards so that they will go up to
the graphics card buffer (B000 for mono, B800 for color). MOREDOS
will automatically check up to 704k (B800) for other than this default
the form of moredos is MOREDOS n where n is the number of 32k memory
areas to check. To check up to 640k only (for EGA users) enter
MOREDOS 0. For machines without displays and full memory up to C000
then enter MOREDOS 4. For CGA systems enter MOREDOS 3.
OPERATION: MOREDOS.COM turns of NMI and the does reads and writes
to memory until the read/write fails. It then updates the BIOS
memory area and the DOS memory allocation blocks to reflect the
new memory. If there is a command line parameter of 0 to 4 it will
limit its search to the number of 32k blocks above 640k as indicated
by the command line. MOREDOS is not memory resident and can be entered
at any time, although it should confuse the hell out of Doubledos and
similar programs if not run first in the autoexec.bat.