DS51795A Datasheet, PDF (89/98 Pages) Microchip Technology – PICkit™ 3 Programmer/Debugger

Glossary
Prologue
A portion of compiler-generated code that is responsible for allocating stack space, pre-
serving registers and performing any other machine-specific requirement specified in
the runtime model. This code executes before any user code for a given function.
Prototype System
A term referring to a user's target application, or target board.
PWM Signals
Pulse-Width Modulation Signals. Certain PIC MCU devices have a PWM peripheral.
Qualifier
An address or an address range used by the Pass Counter or as an event before
another operation in a complex trigger.
Radix
The number base, hex, or decimal, used in specifying an address.
RAM
Random Access Memory (Data Memory). Memory in which information can be
accessed in any order.
Raw Data
The binary representation of code or data associated with a section.
Read Only Memory
Memory hardware that allows fast access to permanently stored data but prevents
addition to or modification of the data.
Real Time
When an in-circuit debugger or debugger is released from the halt state, the processor
runs in Real-Time mode and behaves exactly as the normal chip would behave. In
Real-Time mode, the real time trace buffer of an debugger is enabled and constantly
captures all selected cycles, and all break logic is enabled. In an in-circuit debugger or
debugger, the processor executes in real time until a valid breakpoint causes a halt, or
until the user halts the execution.
In the simulator, real time simply means execution of the microcontroller instructions as
fast as they can be simulated by the host CPU.
Real-Time Watch
A Watch window where the variables change in real-time as the application is run. See
individual tool documentation to determine how to set up a real-time watch. Not all tools
support real-time watches.
Recursive Calls
A function that calls itself, either directly or indirectly.
Recursion
The concept that a function or macro, having been defined, can call itself. Great care
should be taken when writing recursive macros; it is easy to get caught in an infinite
loop where there will be no exit from the recursion.
Reentrant
A function that may have multiple, simultaneously active instances. This may happen
due to either direct or indirect recursion or through execution during interrupt
processing.
© 2009 Microchip Technology Inc.
DS51795A-page 85