User's Manual

Glossary 155
EPROM
Acronym for erasable programmable read-only memory.
ERA
Abbreviation for embedded remote access.
ERA/MC
Abbreviation for embedded remote access modular computer. See modular
system.
ERA/O
Abbreviation for embedded remote access option.
ESM
Abbreviation for embedded systems management, which is a set of instruction
coding in system software and firmware that notifies a user about potential
hardware problems on a system.
expanded memory
A technique for accessing RAM above 1 MB. To enable expanded memory on
your system, you must use an EMM. You should configure your system to support
expanded memory only if you run application programs that can use (or require)
expanded memory.
extended memory
RAM above 1 MB. Most software that can use it, such as the Windows operating
system, requires that extended memory be under the control of an XMM.
external cache memory
A RAM cache using SRAM chips. Because SRAM chips operate at several times
the speed of DRAM chips, the microprocessor can retrieve data and instructions
faster from external cache memory than from RAM.