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AR# 3381

M1.4 Map - FATAL_ERROR:x4ema:x4emaclb.c:663:1.44:5.2 - Flop in Y found


Keywords: M1.4, Map, fatal, error, x4ema, logic, reduction

Urgency: Standard

General Description:
Design using Viewlogic targeting 4010E and brought into M1.4. In MAP, during Optimizing, the following error occurs:
FATAL_ERROR:x4ema:x4emaclb.c:663:1.44:5.2 - Flop in Y found.
Process will terminate. Please call Xilinx support.
This design ran through fine in Xact 6.0.1. The error still occurs with the
latest core_nt patch.



Resolution 1:
The workaround is to run MAP with the "-l" option. This option is
available in the Design Manager GUI under Implement Options. Click on
Edit Template for Implentation and De-Select Replicate Logic to Allow
Logic Level Reduction. This Fatal Error was caused because the trimming
step in logic replication has encoutered a fully constrained and packed


A fix for this error is included in the current M1.4 Core
Applications patch available from the Xilinx Download Area:

Solaris: http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_sol17_m14.tar.Z
SunOS http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_sun17_m14.tar.Z
HPUX: http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_hp17_m14.tar.Z
Win95/NT: http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_nt17.zip
AR# 3381
Date Created 02/04/1998
Last Updated 03/20/2000
Status Archive
Type General Article