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System Navigator™ Probe
for AMD Geode™ GX and LX Processors


The System Navigator™ probe is designed to support the special features and integrated peripherals of the AMD Geode™ GX and Geode LX processors. To learn more about the Geode GX and Geode LX processors, go to this link: AMD Geode Solutions.

On-Chip Instrumentation (OCI®) extensions for software debug and system testing have been jointly developed with AMD and are integrated into the processor. These OCI features provide a powerful debug tool with advanced features at a competitive price.

The System Navigator probe is used for hardware testing and integration, BIOS development, and other firmware/software testing. In addition to hardware and software breakpoints, processor run control, and access to all CPU registers and coprocessor registers, the System Navigator has on-chip trace features. Trace information is decoded and displayed as executed instructions. Trace is captured in on-chip memory (128 x 64-bit frames). The trace window displays disassembled instructions interspersed with system messages such as interrupts and exceptions.

The System Navigator probe connects to the target system using a 14-pin debug connector and optional off-chip trace connector. The System Navigator runs on a Windows® 2000/XP PC or Linux PC over a USB 2.0 port or optional 10/100 Ethernet connection. The GNU-based source debugger program GDB is included, and provides the user with an easy-to-use source level interface in addition to the assembly level debug user interface.

Key Features

  • Utilizes On-Chip Instrumentation (OCI) debug extensions in Geode GX and Geode LX processors
  • Read-write all CPU registers, machine-specific registers (MSRs), memory, and I/O
  • Go, halt processor run control
  • Single-step by assembly instruction
  • Unlimited software breakpoints
  • Real-time on-chip trace capture included
  • On-chip trace depth 128 x 64-bit frames
  • Support for System Management Mode, including single stepping through the transition to SMM
  • Single step through real mode to protected mode transition while monitoring all register updates
  • Flash programming support
  • Hardware execution breakpoints using debug registers
  • Trigger window for setting complex triggers
  • Complex triggers can monitor address and cycle type
  • Low-level access to JTAG functions
  • Single line assembler and disassembler
  • Trace window with full trace decode into instruction mnemonics
  • Source window provides execution control: go; halt; goto cursor; step over/into call
  • Source window can set or clear software or hardware breakpoints
  • GNU-based GDB source level debug program included
  • Interface driver for kernel level debug with Windows CE Platform Builder and WinDbg with Windows XP/XPE debugging
  • Command-line interface with Tcl/tk scripting language standard