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1990-07-26
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ID:OM Out of Memory Messages
Quarterdeck Technical Note
by Stan Young
An out of memory message when loading a program means one of three
things:
1. There has not been enough memory allocated to the program and
the program is giving the error message. In this case, run
DESQview's Change a Program and allocate some more memory (in the
Memory Size in K field). Remember, regardless of the total memory
on your machine, the program will only see what was allocated to
the window.
2. You have allocated too much memory to the window and DESQview
is giving you a message indicating it doesn't have enough free
memory to make the partition that big. Try making the figure in
"Memory Size in K" smaller. Run the DESQview Memory Status
program and check the figure listed in the field Conventional
Memory/Largest Available. This figure should give you a clue as
to the maximum size window you can open after allowing for an 11K
overhead if you are loading a text based program or 22K for a
graphics based program.
3. You may have entered a value for "System Memory (in K)" on the
advanced options menu of Change a Program. For non-DESQview
specific programs, this figure should always be zero. Even in the
case of DESQview specific programs, this figure would rarely be
above 10K. Having a figure in this field increases the overhead
for the window by a corresponding amount.
When selecting a memory size for your application, you should
consult the program's user manual to see what the developers feel is
the minimum memory requirement. Usually, this is stated in the
early portions of the manual or sometimes on the box that the manual
came in. Generally you can deduct 30-40K from this number since
these numbers are generally given in standard "round" machine sizes
and account for the overhead of loading DOS and a few drivers. This
overhead need not be calculated as part of the DESQview window size.
Copyright (C) 1990 by Quarterdeck Office Systems
* * * E N D O F F I L E * * *