Emulation latch to capture state

A computer program product for simulating an electronic device, the computer program product comprising one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions including instructions to:

• create a complete copy of a design under test;
• create a delayed buffer for the copy, wherein inputs to the design under test are stored in the delayed buffer;
• run a test program simultaneously on the design under test and the copy, wherein running the test program on the copy is delayed in time by the delayed buffer;
• responsive to determining that an event has occurred on the design under test, halt both the design under test and the test program on the copy;
• and
• enable a user via a user interface to determine a cause of the event using the inputs stored in the delayed buffer to scan the copy.

A computer system for simulating an electronic device, the computer system comprising:

• one or more computer processors;
• one or more computer readable storage media;
• and
• program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more computer processors, the stored program instructions including instructions to:
• create a complete copy of a design under test;
• create a delayed buffer for the copy, wherein inputs to the design under test are stored in the delayed buffer;
• run a test program simultaneously on the design under test and the copy, wherein running the test program on the copy is delayed in time by the delayed buffer;
• responsive to determining that an event has occurred on the design under test, halt both the design under test and the test program on the copy;
• and
• enable a user via a user interface to determine a cause of the event using the inputs stored in the delayed buffer to scan the copy.