Exception Vectors Used by 166Bug

Preserving the Debugger Operating Environment

The exception vectors used by the debugger are listed below. These vectors must reside at the specified offsets in the target program’s vector table for the associated debugger facilities (breakpoints, trace mode, etc) to operate.

Table 4-2. Exception Vectors Used by 166Bug

	Vector	Exception	166Bug Facility
	Offset	Exception	166Bug Facility
	Offset


	$10	Illegal instruction	Breakpoints (used by GO, GN, GT)
$24		Trace	Trace operations (such as T, TC, TT)

	$80-$B8	TRAP #0 - #14	Used internally

	$BC	TRAP #15	System calls

	$NOTE	Level 7 interrupt	ABORT pushbutton

	$NOTE	Level 7 interrupt	AC Fail

	$DC	FP Unimplemented Data Type	Software emulation and data type
			conversion of floating point data.

NOTE: These depend on what the Vector Base Register (VBR) is set to in the VMEchip2.

When the debugger handles one of the exceptions listed in Table 4-2, the target stack pointer is left pointing past the bottom of the exception stack frame created; that is, it reflects the system stack pointer values just before the exception occurred. In this way, the operation of the debugger facility (through an exception) is transparent to users.

MVME166IG/D2

4-11

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.

Motorola MVME166IG/D2 manual Exception Vectors Used by 166Bug

Models: MVME166IG/D2