time_sim.sdf

实用的程序代码

(DELAYFILE
  (SDFVERSION "2.1")
  (DESIGN "XOR_VAR")
  (DATE "Tue Jan 13 10:07:55 1998")
  (VENDOR "Xilinx")
  (PROGRAM "Xilinx VHDL SDF writer")
  (VERSION "M1.4.12")
  (DIVIDER /)
  (VOLTAGE 5.00:5.00:5.00)
  (PROCESS "best=1.0:nom=1.0:worst=1.0")
  (TEMPERATURE 25.00:25.00:25.00)
  (TIMESCALE 1ps)
  (CELL
    (CELLTYPE "X_BUF")
    (INSTANCE U31)
    (DELAY
      (ABSOLUTE
        (PORT I  (0:0:0) (0:0:0))
        (IOPATH I O  (2050:2050:2050) (2050:2050:2050))
      )
    )
  )
  (CELL
    (CELLTYPE "X_BUF")
    (INSTANCE U32)
    (DELAY
      (ABSOLUTE
        (PORT I  (0:0:0) (0:0:0))
        (IOPATH I O  (2050:2050:2050) (2050:2050:2050))
      )
    )
  )
  (CELL
    (CELLTYPE "X_BUF")
    (INSTANCE U33)
    (DELAY
      (ABSOLUTE
        (PORT I  (0:0:0) (0:0:0))
        (IOPATH I O  (2050:2050:2050) (2050:2050:2050))
      )
    )
  )
  (CELL
    (CELLTYPE "X_XOR2")
    (INSTANCE U36)
    (DELAY
      (ABSOLUTE
        (PORT I0  (1113:1113:1113) (1113:1113:1113))
        (IOPATH I0 O  (1600:1600:1600) (1600:1600:1600))
        (PORT I1  (1431:1431:1431) (1431:1431:1431))
        (IOPATH I1 O  (1600:1600:1600) (1600:1600:1600))
      )
    )
  )
  (CELL
    (CELLTYPE "X_XOR2")
    (INSTANCE U37)
    (DELAY
      (ABSOLUTE
        (PORT I0  (1113:1113:1113) (1113:1113:1113))
        (IOPATH I0 O  (1600:1600:1600) (1600:1600:1600))
        (PORT I1  (1045:1045:1045) (1045:1045:1045))
        (IOPATH I1 O  (1600:1600:1600) (1600:1600:1600))
      )
    )
  )
  (CELL
    (CELLTYPE "X_BUF")
    (INSTANCE U34_1I20)
    (DELAY
      (ABSOLUTE
        (PORT I  (1252:1252:1252) (1252:1252:1252))
        (IOPATH I O  (7300:7300:7300) (7300:7300:7300))
      )
    )
  )
  (CELL
    (CELLTYPE "X_TRI")
    (INSTANCE U34_1I20_GTS_TRI_0)
    (DELAY
      (ABSOLUTE
        (PORT I  (0:0:0) (0:0:0))
        (IOPATH I O  (0:0:0) (0:0:0))
        (IOPATH CTL O ( )  ( )  (0:0:0) (0:0:0) (0:0:0) (0:0:0))
      )
    )
  )
  (CELL
    (CELLTYPE "X_BUF")
    (INSTANCE U35_1I20)
    (DELAY
      (ABSOLUTE
        (PORT I  (975:975:975) (975:975:975))
        (IOPATH I O  (7300:7300:7300) (7300:7300:7300))
      )
    )
  )
  (CELL
    (CELLTYPE "X_TRI")
    (INSTANCE U35_1I20_GTS_TRI_1)
    (DELAY
      (ABSOLUTE
        (PORT I  (0:0:0) (0:0:0))
        (IOPATH I O  (0:0:0) (0:0:0))
        (IOPATH CTL O ( )  ( )  (0:0:0) (0:0:0) (0:0:0) (0:0:0))
      )
    )
  )
  (CELL
    (CELLTYPE "X_INV")
    (INSTANCE U34_1I20_GTS_TRI_2_INV_2)
    (DELAY
      (ABSOLUTE
        (IOPATH I O  (0:0:0) (0:0:0))
      )
    )
  )
  (CELL
    (CELLTYPE "X_INV")
    (INSTANCE U35_1I20_GTS_TRI_2_INV_3)
    (DELAY
      (ABSOLUTE
        (IOPATH I O  (0:0:0) (0:0:0))
      )
    )
  )
)