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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

how can i simulate about the inout pin.

Why is QuartussII wave 'Z' for ever when I simulate one inout pin.i should how do it? Wether the inout pin is support with the simulate tool in QuartussII?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

You need to think of 'Z' as '0' or '1'

if the drive is '0' your wave should be '0'

if the drive is '1' your wave should be '1'

if there is no drive then the wave should be 'Z'

if there is unknown drive then wave should be X

for inout you need to drive the output when it is ouput...