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AR# 2926

ViewSim and M1.2: Loading func_sim.xmm gives error that none of the RAM instances are found.

Description

KEYWORDS: Viewsim, Functional simulation, XMM, RAM,

URGENCY: Standard

GENERAL DESCRIPTION
When running ViewSim on a design created from EDIF generated by M1.2, you may
receive an error message that some of the instances are not found when
func_sim.xmm is loaded.

Apparently, Viewlogic's EDIF Netlist Reader (EDIFNETI) in both Workview
Office 7.31 and Powerview 6.0.0, may change instance names (adding a trailing
"p") when the instance has the same name as one of the ports on the owning
block. Since the XMM file is built based on the hierarchical instance names
in the EDIF, this changing of names may cause failures when loading the XMM
in Viewsim.

Solution

Workaround is to use M1.3 or later version.

In M1.3 or later version, NGD2EDIF has been changed so that it
uniquifies the instance names against the parent block's pins.
Thus, the instances in question will be renamed in the EDIF
netlist (and in the XMM file), eliminating the possibility of
Viewlogic's EDIFNETI doing so.
AR# 2926
Date Created 10/04/1997
Last Updated 03/11/1999
Status Archive
Type General Article