Microchip Technology MPLAB ICE, User Manual

Page: 171 / 192


2001 Microchip Technology Inc. DS51159B-page 171
Glossary
Configuration Bits
Unique bits programmed to set PICmicro microcontroller modes of operation.
A configuration bit may or may not be preprogrammed. These bits are set in
the Options > Development Mode dialog for simulators or emulators and in
the
_ _ CONFIG
MPASM directive for programmers.
Control Directives
Control directives in MPASM permit sections of conditionally assembled code.
Data Directives
Data directives are those that control MPASM’s allocation of memory and
provide a way to refer to data items symbolically; that is, by meaningful
names.
Data Memory
General purpose file registers (GPRs) from RAM on the PICmicro device
being emulated. The File Register window displays data memory.
Directives
Directives provide control of the assembler’s operation by telling MPASM how
to treat mnemonics, define data and format the listing file. Directives make
coding easier and provide custom output according to specific needs.
Download
Download is the process of sending data from the PC host to another device,
such as an emulator, programmer or target board.
EEPROM
Electrically Erasable Programmable Read Only Memory. A special type of
PROM that can be erased electrically. Data is written or erased one byte at a
time. EEPROM retains its contents even when power is turned off.
Emulation
The process of executing software loaded into emulation memory as if the
firmware resided on the microcontroller device under development.
Emulation Memory
Program memory contained within the emulator.
Emulator
Hardware that performs emulation.
Emulator System
The MPLAB ICE emulator system includes the pod, processor module, device
adapter, cables and MPLAB Software. The PICMASTER emulator system
includes the pod, device-specific probe, cables and MPLAB Software.
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 and break points.