Lauterbach TRACE32 User Manual

PQIII Debugger | 27
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Daisy-Chain Example
Daisy chains can be configured using a PRACTICE script (*.cmm) or the SYStem.CONFIG.state window.
Example: This script explains how to obtain the individual IR and DR values for the above daisy chain.
SYStem.CONFIG.state /Jtag ; optional: open the window
SYStem.CONFIG IRPRE 6. ; IRPRE: There is only one TAP.
; So type just the IR bits of TAP4, i.e. 6.
SYStem.CONFIG IRPOST 12. ; IRPOST: Add up the IR bits of TAP1, TAP2
; and TAP3, i.e. 4. + 3. + 5. = 12.
SYStem.CONFIG DRPRE 1. ; DRPRE: There is only one TAP which is
; in BYPASS mode.
; So type just the DR of TAP4, i.e. 1.
SYStem.CONFIG DRPOST 3. ; DRPOST: Add up one DR bit per TAP which
; is in BYPASS mode, i.e. 1. + 1. + 1. = 3.
; This completes the configuration.
Chip
IRPOST IRPRE
4
1
TAP1
IR
DR
3
1
TAP2
IR
DR
5
1
TAP3
IR
DR
6
1
TAP4
IR
DR
TDI
TDO
DRPOST DRPRE
IR: Instruction register length DR: Data register length Chip: The chip you want to debug

Lauterbach TRACE32 Specifications

General

Operating System Support (Host)	Windows, Linux
Manufacturer	Lauterbach GmbH
Category	Debug and Trace Tool
Supported Architectures	ARM, Power Architecture, RISC-V, x86
Interface	JTAG, SWD, Nexus, Aurora
Features	Debugging, tracing, multicore debugging
Host Interface	USB, Ethernet
IDE Integration	Eclipse
Scripting Language	Practice
Power Measurement	Yes (requires specific PowerProbe hardware)
Trace Technology	Instruction Trace, Data Trace
License Type	Floating license, node-locked license available
Software Compatibility	Supports various compilers and toolchains