Debugger General Information

ROMboot

On the MVME166, if you want to add other firmware applications, you must note that anytime Flash memory is programmed, the entire contents of Flash

3will be erased, including the 166Bug product! You should make use of the "block move" command (BM) to copy the debugger from Flash to RAM, combine your own object with the debugger in RAM, and then reprogram Flash from this combined image.

This function is configured/enabled by the Environment (ENV) command (refer to Appendix A) and executed at power-up (optionally also at reset) or by the RB command assuming there is valid code in the Flash (or optionally elsewhere on the module or VMEbus) to support it. If ROMboot code is installed, a user-written routine is given control (if the routine meets the format requirements). One use of ROMboot might be resetting SYSFAIL* on an unintelligent controller module. The NORB command disables the function.

For a user’s ROMboot module to gain control through the ROMboot linkage, four requirements must be met:

a.Power must have just been applied (but the ENV command can change this to also respond to any reset).

b.Your routine must be located within the MVME166 ROM memory map (but the ENV command can change this to any other portion of the onboard memory, or even offboard VMEbus memory).

c.The ASCII string "BOOT" must be located within the specified memory range.

d.Your routine must pass a checksum test, which ensures that this routine was really intended to receive control at power-up.

For complete details on how to use ROMboot, refer to the Debugging Package for Motorola 68K CISC CPUs User’s Manual.

Network Boot

Network Auto Boot is a software routine contained in the 166Bug EPROMs that provides a mechanism for booting an operating system using a network (local Ethernet interface) as the boot device. The Network Auto Boot routine automatically scans for controllers and devices in a specified sequence until a valid bootable device containing a boot media is found or the list is exhausted. If a valid bootable device is found, a boot from that device is started. The

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MVME166 Single Board Computer Installation Guide

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Motorola MVME166IG/D2, MVME166D2 manual ROMboot, Network Boot
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MVME166IG, MVME166D2, MVME166IG/D2 specifications

The Motorola MVME166IG/D2 is a pioneering embedded computer designed for high-performance applications in industrial and telecom sectors. This versatile computing platform is based on the PowerPC architecture, which ensures efficient processing capabilities and transfer of data, making it suitable for a wide range of applications, including real-time control, data acquisition, and system monitoring.

One of the main features of the MVME166IG/D2 is its powerful processor. The system is equipped with a PowerPC 603e processor, which offers a remarkable performance rate with a clock speed of up to 250 MHz. This high-speed processing capability allows for rapid data handling and processing, which is critical for demanding applications in real-time environments.

The MVME166IG/D2 also stands out due to its modular design. It supports multiple expansion slots that make it adaptable for different user needs. The system can accommodate additional cards or memory modules, allowing for increased versatility and capability in various operational scenarios.

In terms of connectivity, this embedded computer includes multiple communication interfaces such as Ethernet and serial ports, which facilitate seamless data transfer and communication within larger systems. This connectivity is crucial for integrating the device into existing industrial networks or for connecting with sensors and other equipment.

Another noteworthy characteristic of the MVME166IG/D2 is its robust build quality, which is essential for operation in challenging environments. The device is designed to endure high levels of shock and vibration, making it suitable for deployment in applications such as transportation or heavy machinery.

Additionally, the MVME166IG/D2 offers a range of software support which includes various real-time operating systems. This compatibility allows developers to choose the OS that best fits their application's requirements, enhancing the overall utility of the system.

In summary, the Motorola MVME166IG/D2 is a powerful, flexible embedded computing solution that excels in performance, modularity, and reliability. Its advanced features and durable design make it an ideal choice for industries that require precision, speed, and robustness in their computing solutions.
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