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在ise下设计的蝶形变换程序

VERSION 6
BEGIN SCHEMATIC
    BEGIN ATTR DeviceFamilyName "spartan3"
        DELETE all:0
        EDITNAME all:0
        EDITTRAIT all:0
    END ATTR
    BEGIN NETLIST
        BEGIN BLOCKDEF ccmul
            TIMESTAMP 2006 11 21 8 44 44
            RECTANGLE N 64 -384 320 0 
            LINE N 64 -352 0 -352 
            RECTANGLE N 0 -300 64 -276 
            LINE N 64 -288 0 -288 
            RECTANGLE N 0 -236 64 -212 
            LINE N 64 -224 0 -224 
            RECTANGLE N 0 -172 64 -148 
            LINE N 64 -160 0 -160 
            RECTANGLE N 0 -108 64 -84 
            LINE N 64 -96 0 -96 
            RECTANGLE N 0 -44 64 -20 
            LINE N 64 -32 0 -32 
            RECTANGLE N 320 -364 384 -340 
            LINE N 320 -352 384 -352 
            RECTANGLE N 320 -44 384 -20 
            LINE N 320 -32 384 -32 
        END BLOCKDEF
        BEGIN BLOCKDEF fd
            TIMESTAMP 2000 1 1 10 10 10
            RECTANGLE N 64 -320 320 -64 
            LINE N 0 -128 64 -128 
            LINE N 0 -256 64 -256 
            LINE N 384 -256 320 -256 
            LINE N 80 -128 64 -144 
            LINE N 64 -112 80 -128 
        END BLOCKDEF
        BEGIN BLOCK XLXI_1 ccmul
            PIN clk
            PIN x_in(7:0)
            PIN y_in(7:0)
            PIN c_in(7:0)
            PIN cps_in(8:0)
            PIN cms_in(8:0)
            PIN r_out(7:0)
            PIN i_out(7:0)
        END BLOCK
        BEGIN BLOCK XLXI_3 fd
            PIN C
            PIN D
            PIN Q
        END BLOCK
    END NETLIST
    BEGIN SHEET 1 3520 2720
        INSTANCE XLXI_3 288 1440 R0
        BEGIN INSTANCE XLXI_1 816 1520 R0
        END INSTANCE
    END SHEET
END SCHEMATIC