Debugger General Information

 

 

registers are invalidated. Input and output character queues are cleared.

 

 

Onboard devices (timer, serial ports, etc.) are reset, and the first two serial

 

 

ports are reconfigured to their default state.

 

 

 

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During WARM reset, the 166Bug variables and tables are preserved, as well as

 

 

the target state registers and breakpoints.

 

 

Reset must be used if the processor ever halts, or if the 166Bug environment is ever lost (vector table is destroyed, stack corrupted, etc.).

Abort

Abort is invoked by pressing and releasing the ABORT switch on the MVME166 front panel. Whenever abort is invoked when executing a user program (running target code), a "snapshot" of the processor state is captured and stored in the target registers. For this reason, abort is most appropriate when terminating a user program that is being debugged. Abort should be used to regain control if the program gets caught in a loop, etc. The target PC, register contents, etc., help to pinpoint the malfunction.

Pressing and releasing the ABORT switch generates a local board condition which may interrupt the processor if enabled. The target registers, reflecting the machine state at the time the ABORT switch was pressed, are displayed on the screen. Any breakpoints installed in your code are removed and the breakpoint table remains intact. Control is returned to the debugger.

Break

A "Break" is generated by pressing and releasing the BREAK key on the terminal keyboard. Break does not generate an interrupt. The only time break is recognized is when characters are sent or received by the console port. Break removes any breakpoints in your code and keeps the breakpoint table intact. Break also takes a snapshot of the machine state if the function was entered using SYSCALL. This machine state is then accessible to you for diagnostic purposes.

Many times it may be desirable to terminate a debugger command prior to its completion; for example, during the display of a large block of memory. Break allows you to terminate the command.

SYSFAIL* Assertion/Negation

Upon a reset/powerup condition the debugger asserts the VMEbus SYSFAIL* line (refer to the VMEbus specification). SYSFAIL* stays asserted if any of the following has occurred:

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MVME166 Single Board Computer Installation Guide

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Motorola MVME166D2, MVME166IG/D2 manual Abort, Break, SYSFAIL* Assertion/Negation
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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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