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The pages on this site contain documentation for very old MS-DOS software,
purely for historical purposes.
If you're looking for up-to-date documentation, particularly for programming,
you should not rely on the information found here, as it will be woefully
out of date.
Switch B2 Details (↑ RTS switches)
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See ◄Introduction to switches►
Normally sorts are optimized to make use of all free memory. This is
faster for small sorts. However, when performing a sort on data which
is many times the size of free memory, this optimization requires
that you have free disk space which is at least twice the size of the
data records being sorted.
Setting the B2 switch to on optimizes disk usage during a sort so
that you only require free disk space which is roughly equal to the
size of the data being sorted. Moreover, because less paging to disk
occurs, it speeds up large sorts.
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