DS51795A Datasheet, PDF (93/98 Pages) Microchip Technology – PICkit™ 3 Programmer/Debugger

Glossary
Trace
An debugger or simulator function that logs program execution. The debugger logs pro-
gram execution into its trace buffer which is uploaded to MPLAB IDE’s trace window.
Trace Memory
Trace memory contained within the debugger. Trace memory is sometimes called the
trace buffer.
Trace Macro
A macro that will provide trace information from debugger data. Since this is a software
trace, the macro must be added to code, the code must be recompiled or reassembled,
and the target device must be programmed with this code before trace will work.
Trigger Output
Trigger output refers to an debugger output signal that can be generated at any
address or address range, and is independent of the trace and breakpoint settings. Any
number of trigger output points can be set.
Trigraphs
Three-character sequences, all starting with ??, that are defined by ISO C as
replacements for single characters.
Unassigned Section
A section which has not been assigned to a specific target memory block in the linker
command file. The linker must find a target memory block in which to allocate an
unassigned section.
Uninitialized Data
Data which is defined without an initial value. In C,
int myVar;
defines a variable which will reside in an uninitialized data section.
Upload
The Upload function transfers data from a tool, such as an debugger or programmer,
to the host PC or from the target board to the debugger.
USB
Universal Serial Bus. An external peripheral interface standard for communication
between a computer and external peripherals over a cable using bi-serial transmission.
USB 1.0/1.1 supports data transfer rates of 12 Mbps. Also referred to as high-speed
USB, USB 2.0 supports data rates up to 480 Mbps.
Vector
The memory locations that an application will jump to when either a reset or interrupt
occurs.
Warning
An alert that is provided to warn you of a situation that would cause physical damage
to a device, software file, or equipment.
Warning
Warnings report conditions that may indicate a problem, but do not halt processing. In
MPLAB C30, warning messages report the source file name and line number, but
include the text ‘warning:’ to distinguish them from error messages.
Watch Variable
A variable that you may monitor during a debugging session in a Watch window.
© 2009 Microchip Technology Inc.
DS51795A-page 89