Answers Database

PROsim or ViewSim: Outputs of ROM primitives are 'x' (indeterminant state).


Record #1244

Product Family:  Software

Product Line:  ViewLogic

Problem Title:
PROsim or ViewSim: Outputs of ROM primitives are 'x' (indeterminant
state).



Problem Description:
Outputs of ROM primitives are 'x',indicating an indeterminant state. This
may happen during functional or timing simulation.

Cause: The sequence in which the commands are entered either in the command
file OR at Viewsim prompt could be the cause of the problem.


Solution 1:

Resolution:
Make sure you enter the commands in the following order:

restart
execute FILE.xmm
h gsr
sim 100
l gsr


where FILE.xmm is the ROM data file.



End of Record #1244