Triggering

To detect bus contention

To detect bus contention

In this sequencer setup, the trigger occurs only if both devices assert their bus transfer acknowledge lines at the same time.

1Select the timing analyzer Trigger menu.

2Define the Edge1 term to represent assertion of the bus transfer acknowledge line of one device, and Edge2 term to represent assertion of the bus transfer acknowledge line of the other device.

You can rename these to BTACK1 and BTACK2.

3Under Timing Sequence Levels, enter the following sequence specification:

TRIGGER on “BTACK1 BTACK2” 1 time

Triggering on Bus Contention

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HP 16500C, 16501A LOGIC manual To detect bus contention