Liren Large Software Subsidy 10/10.iso/l/l420/1.ddi/README.D2

Text File | 1990-12-04 | 1.6 KB | 27 lines

You may have noticed that there is a file called d2.exe which is installed
along with the other Demo II program files.  d2.exe is another version of
demo2.exe.

When we added new features to create the current version Demo II grew in
size.  We were faced with a choice - we could increase the size of the
executable image (how much memory Demo II consumes when it runs) and reduce
the size of the largest demo that can be created or run, or we could keep
the size of the executable image constant but swaping code in and out as
needed at the cost of slowing down some operations.  Upon reflection it was
clear that both solutions have advantages and disadvantages and the right
solution depends upon the needs of the user.  Those with a large body of
existing demos or those wishing to creating large memory intensive demos
will probably want to use the "demo2.exe" version.  Those starting fresh,
and those creating animation sequences where finely tuned timing is required
will want to use the "d2.exe" version.  Each will create demos that may be
run using the "rdemo2.exe" runtime module.  However, since "demo2.exe"
leaves approximately 150k more memory available for your demo, it is
possible that some demos created with "demo2.exe" may not be loaded with
"d2.exe" due to memory constraints.  Users on 386 based machines (and even
most 286 machines) which are configured with expanded or extended memory
will probably want to run "demo2.exe", as we take advantage of this memory
and the swapping is much quicker on these systems as a result.