User manual

Glossary
© 2008 Microchip Technology Inc. DS51766A-page 95
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.
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.
ROM
Read Only Memory (Program Memory). Memory that cannot be modified.
Run
The command that releases the debugger from halt, allowing it to run the application
code and change or respond to I/O in real time.
Scenario
For MPLAB SIM simulator, a particular setup for stimulus control.
SFR
See Special Function Registers.
Shell
The MPASM assembler shell is a prompted input interface to the macro assembler.
There are two MPASM assembler shells: one for the DOS version and one for the
Windows version.
Simulator
A software program that models the operation of devices.