Glossary
2017 Microchip Technology Inc. DS50002596A-page 79
E
EEPROM
Electrically Erasable Programmable Read Only Memory. A special type of PROM that
can be erased electrically. Data is written or erased one byte at a time. EEPROM
retains its contents even when power is turned off.
ELF
Executable and Linking Format. An object file of this format contains machine code.
Debugging and other information is specified in with DWARF. ELF/DWARF provide
better debugging of optimized code than COFF.
Emulation/Emulator
See ICE/ICD.
Endianness
The ordering of bytes in a multi-byte object.
Environment
MPLAB PM3 – A folder containing files on how to program a device. This folder can be
transferred to a SD/MMC card.
Epilogue
A portion of compiler-generated code that is responsible for deallocating stack space,
restoring registers and performing any other machine-specific requirement specified in
the runtime model. This code executes after any user code for a given function,
immediately prior to the function return.
EPROM
Erasable Programmable Read Only Memory. A programmable read-only memory that
can be erased usually by exposure to ultraviolet radiation.
Error/Error File
An error reports a problem that makes it impossible to continue processing your
program. When possible, an error identifies the source file name and line number
where the problem is apparent. An error file contains error messages and diagnostics
generated by a language tool.
Event
A description of a bus cycle which may include address, data, pass count, external
input, cycle type (fetch, R/W), and time stamp. Events are used to describe triggers,
breakpoints and interrupts.
Executable Code
Software that is ready to be loaded for execution.
Export
Send data out of the MPLAB IDE/MPLAB X IDE in a standardized format.
Expressions
Combinations of constants and/or symbols separated by arithmetic or logical
operators.
Extended Microcontroller Mode
In extended microcontroller mode, on-chip program memory as well as external
memory is available. Execution automatically switches to external if the program
memory address is greater than the internal memory space of the PIC18 device.
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