A system and method is provided to accurately model bidirectional wire I/O using hardware description language (HDL). The preferred model and method uses an HDL model that provides two parallel paths between ports of the bidirectional wire I/O. During simulation, the ports are monitored for activity. When an event is detected on either port, the model checks both ports to see if they are different values. If the ports are different values, one of the two parallel paths is enabled and the other disabled. For example, the model enables the path in which the new signal has appeared and thus passes the signal to the other port. The preferred model allows for the use of HDL elements that support full timing annotation. The preferred embodiment also removes the possibility of high impedance transition error that can result from false transitions to a high impedance state.
The present invention is directed to programmable bidirectional buffers and methods for programming such buffers. One method of according to an aspect of the present invention is a method of configuring a bidirectional buffer including first and second signal nodes. The method includes applying a configuration signal on one of the first and second signal nodes and configuring the buffer responsive to the applied configuration signal.
A computer program product for performing testing of a simulated direct access storage device in a testing simulation environment is disclosed. The computer program product provides a software representation of a plurality of hardware components within the simulated direct access storage device. The computer program product also uses a control program module within the testing simulation environment, wherein the control program module interacts with the software representation of the plurality of hardware components, and a testing program for interacting with the control program module and the software representation of the plurality of hardware components. In response to detection of an occurrence of a pre-selected event within the simulated direct access storage device, one or more codes are sent from the testing program to the software representation of the plurality of hardware components and whether or not a response by the control program module to the one or more codes is correct is determined.
A method for performing testing of a simulated direct access storage device in a testing simulation environment is disclosed. The method provides a software representation of a plurality of hardware components within the simulated direct access storage device. The method also uses a control program module within the testing simulation environment, wherein the control program module interacts with the software representation of the plurality of hardware components, and a testing program for interacting with the control program module and the software representation of the plurality of hardware components. In response to detection of an occurrence of a pre-selected event within the simulated direct access storage device, one or more codes are sent from the testing program to the software representation of the plurality of hardware components and whether or not a response by the control program module to the one or more codes is correct is determined.
