Microchip Technology MPLAB ICE, Руководство пользователя

Страница: 182 / 192

MPLAB
®
IDE User’s Guide
DS51159B-page 182

2001 Microchip Technology Inc.
Stack - Hardware
An area in PICmicro MCU memory where function arguments, return values,
local variables and return addresses are stored; (i.e., a “Push-Down” list of
calling routines). Each time a PICmicro MCU executes a
CALL
or responds to
an interrupt, the software pushes the return address to the stack. A return
command pops the address from the stack and puts it in the program counter.
The PIC18CXXX family also has a hardware stack to store register values for
“fast” interrupts.
Stack - Software
The compiler uses a software stack for storing local variables and for passing
arguments to and returning values from functions.
Static RAM or SRAM
Static Random Access Memory. Program memory you can Read/Write on the
target board that does not need refreshing frequently.
Status Bar
The Status Bar is located on the bottom of the MPLAB IDE window and
indicates such current information as cursor position, development mode and
device, and active tool bar.
Step Into
This command is the same as Single Step. Step Into (as opposed to Step
Over) follows a CALL instruction into a subroutine.
Step Over
Step Over allows you to debug code without stepping into subroutines. When
stepping over a CALL instruction, the next break point will be set at the
instruction after the CALL. If for some reason the subroutine gets into an
endless loop or does not return properly, the next break point will never be
reached.
The Step Over command is the same as Single Step except for its handling of
CALL instructions.
Stimulus
Data generated to exercise the response of simulation to external signals.
Often the data is put into the form of a list of actions in a text file. Stimulus
may be asynchronous, synchronous (pin), clocked and register.
Stopwatch
A counter for measuring execution cycles.
Symbol
A symbol is a general purpose mechanism for describing the various pieces
which comprise a program. These pieces include function names, variable
names, section names, file names, struct/enum/union tag names, etc.
Symbols in MPLAB IDE refer mainly to variable names, function names and
assembly labels.