Microchip Technology MPLAB ICE, User Manual

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MPLAB
®
ICE User’s Guide
DS51159B-page 120

2001 Microchip Technology Inc.
6.5 Using the Trace Memory Window
The trace memory window in MPLAB ICE contains information that is
uploaded from MPLAB ICE’s trace buffer. The trace buffer consists of memory
hardware that can log the electrical state of the various PICmicro MCU data,
address and control signals at an instruction cycle in real time as the
PICmicro MCU executes instructions. By default, all instruction cycles are
captured by the trace buffer. The Complex Trigger dialog can be used to
control which instruction cycles are captured (Section 6.3).
In MPLAB ICE, the trace buffer captures data on a 128-bit wide analyzer that
is connected to the emulator chip and other devices in the emulator
(Figure 6.17). The signals that the MPLAB ICE analyzer captures are:
• Program Memory Address
• Program Memory Opcode/Data
• File Register Source Address
• File Register Source Data
• File Register Destination Address
• File Register Destination Data
• External Logic Probe
• Time Stamp
• Additional Internal Emulator Signals