User manual

MPLAB
®
REAL ICE
™
In-Circuit Emulator User’s Guide
DS51616B-page 128 © 2008 Microchip Technology Inc.
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.
Export
Send data out of the MPLAB IDE in a standardized format.
Extended Microcontroller Mode
In extended microcontroller mode, on-chip program memory as well as external mem-
ory is available. Execution automatically switches to external if the program memory
address is greater than the internal memory space of the PIC17 or PIC18 device.
External Label
A label that has external linkage.
External Linkage
A function or variable has external linkage if it can be referenced from outside the
module in which it is defined.
External Symbol
A symbol for an identifier which has external linkage. This may be a reference or a
definition.
External Symbol Resolution
A process performed by the linker in which external symbol definitions from all input
modules are collected in an attempt to resolve all external symbol references. Any
external symbol references which do not have a corresponding definition cause a linker
error to be reported.
External Input Line
An external input signal logic probe line (TRIGIN) for setting an event based upon
external signals.
External RAM
Off-chip Read/Write memory.
File Registers
On-chip data memory, including General Purpose Registers (GPRs) and Special
Function Registers (SFRs).
Filter
Determine by selection what data is included/excluded in a trace display or data file.
Flash
A type of EEPROM where data is written or erased in blocks instead of bytes.
FNOP
Forced No Operation. A forced NOP cycle is the second cycle of a two-cycle instruc-
tion. Since the PICmicro microcontroller architecture is pipelined, it prefetches the next
instruction in the physical address space while it is executing the current instruction.
However, if the current instruction changes the program counter, this prefetched
instruction is explicitly ignored, causing a forced NOP cycle.
GPR
General Purpose Register. The portion of device data memory (RAM) available for
general use.
Halt
A stop of program execution. Executing Halt is the same as stopping at a breakpoint.