Marketed as an easy-to-install, inexpensive alternative to replacing the hard drive, Multimedia Stacker frees the 640 kilobytes of conventional memory, which most DOS-based games require to run properly, and moves it to a protected area of
extended memory.
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Extended memory. The advantage of using
extended memory is that it can be addressed directly and thus is much faster than expanded memory.
Moreover, all new 286 and 386 micros should be purchased with expanded or
extended memory.
Caching stores recently and most frequently used instructions and data in high-speed,
extended memory for near-instant retrieval.
After installing QEMM, I had a 3-Meg RAM disk in
extended memory and set the rest as expanded.
For example, the difference between expanded memory and
extended memory should be highlighted by emphasizing the "PA" of exPAnded or "TE" of exTEnded--otherwise the words are identical.
One thing to remember, though, is that Windows converts practically all of your memory into
extended memory while Lotus can only use expanded memory.
The Windows environment gives your computer access to
extended memory allowing the RAM memory to go beyond the conventional 640K, a limitation of computers of the past.
Now, everyone can keep DOS with the introduction of extenders that allow DOS applications to run into
extended memory. In February 1988, Algor introduced its Hyper series of products that under DOS take advantage of
extended memory.
Prices: $9500 (HP 53310A modulation-domain analyzer)> $500 (option 001
extended memory)> $1600 (option 010 oven time base)> $1450 (option 030 channel C)> and $250 (option W30, which is two additional years of support and three years of return-to-HP support).
Expanded and
extended memory alleviate this problem.