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 Problems with SDF file generation in RTL Compiler 

Last post Wed, Jun 1 2011 6:46 AM by arminkrieg. 0 replies.
Started by arminkrieg 01 Jun 2011 06:46 AM. Topic has 0 replies and 1012 views
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  • Wed, Jun 1 2011 6:46 AM

    • arminkrieg
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    • Joined on Wed, Jun 1 2011
    • Posts 1
    • Points 5
    Problems with SDF file generation in RTL Compiler Reply
    Hi!

    I'm trying to synthesize the LEON3MP processor using RTL-Compiler and Nangate 45nm Open Cell Library.

    When preparing the synthesis result for gate-level simulation I get to following problem during compilation of the generated SDF-file:

    --- ncsdfc leon3mp_synth.sdf

    ncsdfc: 08.20-s015: (c) Copyright 1995-2009 Cadence Design Systems, Inc.

    Reading SDF file from location "leon3mp_synth.sdf"

    ncsdfc: *E,SDFIRE: "leon3mp_synth.sdf", line 269496: Syntax error ":".

    ---

    When looking into the SDF-file at this location I find the following:

    --- (CELL

    (CELLTYPE "XOR2_X2")

    (INSTANCE u0.p0.iu0.inc_plus_2735_50:plus_233_41:add_1216_14.g203)

    (DELAY

    (ABSOLUTE

    (PORT A (::0.0))

    (PORT B (::0.0))

    (COND (A == 1'b0) (IOPATH (posedge B) Z (::75) ()))

    (COND (A == 1'b0) (IOPATH (negedge B) Z () (::83)))

    (COND (B == 1'b0) (IOPATH (posedge A) Z (::76) ()))

    (COND (B == 1'b0) (IOPATH (negedge A) Z () (::70)))

    (COND (A == 1'b1) (IOPATH (posedge B) Z () (::24)))

    (COND (A == 1'b1) (IOPATH (negedge B) Z (::46) ()))

    (COND (B == 1'b1) (IOPATH (posedge A) Z () (::22)))

    (COND (B == 1'b1) (IOPATH (negedge A) Z (::36) ()))

    )

    )

    )

    ---

    How could I influence the generation of the SDF-file to avoid such a constuct? (Modelsim sdfcom has the same problem)

    thanks and regards,

    Armin Krieg
    • Post Points: 5
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Started by arminkrieg at 01 Jun 2011 06:46 AM. Topic has 0 replies.