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Disclosed is a tool used to stress a device during simulation by providing external stimulation (irritants) in a controlled manner.
English (United States)
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Irritator, a Tool for Providing External Stimulation for Device Testing
Disclosed is a tool used to stress a device during simulation by providing
external stimulation (irritants) in a controlled manner.
The irritator consists of two parts:
1) a model of the environment outside the device
under test, and
2) the ability to provide a controlled stimulus
to the device.
A processor complex will be used as an example of a device under test.
The environment outside the processor complex would be the I/O channel
and enough functional emulation of devices on the channel to test the processor.
The model would also include behaviorals for any functions included in a full
system that are not part of the device under test but are required for testing. This
external environment allows the simulation to be run without any abnormal
operation of the device under test.
The irritants would be any signals generated outside the processor complex
that are used by the processor in normal operation. These include interrupts,
DMA requests, etc. Additional irritants are those conditions that the processor is
required to handle that are not normal events, specifically error conditions. Some
error conditions (i.e., parity errors) would be impossible to generate in a normal
For maximum utility the irritator is designed to fit into the testing environment
such that the signals injected by the irritator can be defined to occur so that
specific system conditions can be generated....