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  3. AR# 10318: SIMPRIMS 3.1iSP4 - FACTORY_JF parameter causes simulation error in back-annotated (timing) simulation. (VHDL)

AR# 10318

SIMPRIMS 3.1iSP4 - FACTORY_JF parameter causes simulation error in back-annotated (timing) simulation. (VHDL)

Description

Keywords: Factory_jf, simprims, X_CLKDLL2, timing, simulation,
modelsim, mti, verilog, vhdl, vcs, vss, verilog-xl

Urgency: Hot

General Description:
While running 3.1i with Service Pack 4, an invalid parameter (FACTORY_JF)
is being passed through NGD2VHDL/NGD2VER which causes an error during
timing simulation. The following error occurs in ModelSim:

ERROR: Unknown identifier: factory_jf.

Solution

A workaround for this problem is to comment out the line
containing FACTORY_JF in the back-annotated timing
netlist generated by Xilinx:

ERRONEOUS INSTANTIATION:
BCLK_DLL_OUT : X_CLKDLL2
generic map (
CLKDV_DIVIDE => 2.0,
DUTY_CYCLE_CORRECTION => TRUE,
FACTORY_JF => X"C080", -- Comment out this line
MAXPERCLKIN => 40000 ps
)
port map (
RST => RESE.....

CORRECTED INSTANTIATION:
BCLK_DLL_OUT : X_CLKDLL2
generic map (
CLKDV_DIVIDE => 2.0,
DUTY_CYCLE_CORRECTION => TRUE,
-- FACTORY_JF => X"C080", -- This line is now commented out
MAXPERCLKIN => 40000 ps
)
port map (
RST => RESE.....

This problem will be fixed in the next 3.1i Service Pack, Service Pack 5,
which is due out in November, 2000.
AR# 10318
Date 06/30/2004
Status Archive
Type General Article

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