DEC Digital PC 3500 System Reference Manual page 177

Direct Memory Access (DMA)
DMA displays or delivers information from your computer's memory without making
use of the processor. Devices with DMA capability (for example, many sound cards)
must be properly configured in order for your computer to recognize and make use of
this ability.
DPMS
1. Display Power Management Signaling. Technology that enables video
controller circuitry to control the operating condition of a monitor, thereby
decreasing the monitor's energy consumption.
2. DOS Protected Mode Services. A way for a software application to access
extended memory, often by use of a specialized device driver. Examples of
software that uses DPMS include certain versions of Stacker and PKZip.
Enhanced Parallel Port (EPP)
An option available in your computer's BIOS which affects the way a printer attached
to your parallel port communicates with your computer. If your printer supports this
standard, enabling the EPP option will allow faster printing. This specification also
provides a parallel port with the expansion bus ability to support up to 64 external
devices, such as: disk drives, tape drives, CD-ROM drives, and other mass-storage
devices.
expanded memory (EMS)
Memory beyond 640 KB that can only be accessed by use of expanded memory
manager software. Expanded memory can be provided by installing an expanded
memory expansion board, or by using software that enables extended memory to
simulate expanded memory. Some application software requires expanded memory
in order to operate correctly.
Glossary
GL-5