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dds编程代码 希望对别人有帮助 其功能是根据dds的原理编写

    10'b10_1010_1101:qsin=-9'b1101_1110;
    10'b10_1010_1110:qsin=-9'b1101_1111;
    10'b10_1010_1111:qsin=-9'b1110_0000;
    10'b10_1011_0000:qsin=-9'b1110_0000;
    10'b10_1011_0001:qsin=-9'b1110_0001;
    10'b10_1011_0010:qsin=-9'b1110_0010;
    10'b10_1011_0011:qsin=-9'b1110_0011;
    10'b10_1011_0100:qsin=-9'b1110_0011;
    10'b10_1011_0101:qsin=-9'b1110_0100;
    10'b10_1011_0110:qsin=-9'b1110_0101;
    10'b10_1011_0111:qsin=-9'b1110_0101;
    10'b10_1011_1000:qsin=-9'b1110_0110;
    10'b10_1011_1001:qsin=-9'b1110_0111;
    10'b10_1011_1010:qsin=-9'b1110_0111;
    10'b10_1011_1011:qsin=-9'b1110_1000;
    10'b10_1011_1100:qsin=-9'b1110_1001;
    10'b10_1011_1101:qsin=-9'b1110_1001;
    10'b10_1011_1110:qsin=-9'b1110_1010;
    10'b10_1011_1111:qsin=-9'b1110_1010;
    10'b10_1100_0000:qsin=-9'b1110_1011;
    10'b10_1100_0001:qsin=-9'b1110_1100;
    10'b10_1100_0010:qsin=-9'b1110_1100;
    10'b10_1100_0011:qsin=-9'b1110_1101;
    10'b10_1100_0100:qsin=-9'b1110_1101;
    10'b10_1100_0101:qsin=-9'b1110_1110;
    10'b10_1100_0110:qsin=-9'b1110_1111;
    10'b10_1100_0111:qsin=-9'b1110_1111;
    10'b10_1100_1000:qsin=-9'b1111_0000;
    10'b10_1100_1001:qsin=-9'b1111_0000;
    10'b10_1100_1010:qsin=-9'b1111_0001;
    10'b10_1100_1011:qsin=-9'b1111_0001;
    10'b10_1100_1100:qsin=-9'b1111_0010;
    10'b10_1100_1101:qsin=-9'b1111_0010;
    10'b10_1100_1110:qsin=-9'b1111_0011;
    10'b10_1100_1111:qsin=-9'b1111_0011;
    10'b10_1101_0000:qsin=-9'b1111_0100;
    10'b10_1101_0001:qsin=-9'b1111_0100;
    10'b10_1101_0010:qsin=-9'b1111_0100;
    10'b10_1101_0011:qsin=-9'b1111_0101;
    10'b10_1101_0100:qsin=-9'b1111_0101;
    10'b10_1101_0101:qsin=-9'b1111_0110;
    10'b10_1101_0110:qsin=-9'b1111_0110;
    10'b10_1101_0111:qsin=-9'b1111_0110;
    10'b10_1101_1000:qsin=-9'b1111_0111;
    10'b10_1101_1001:qsin=-9'b1111_0111;
    10'b10_1101_1010:qsin=-9'b1111_1000;
    10'b10_1101_1011:qsin=-9'b1111_1000;
    10'b10_1101_1100:qsin=-9'b1111_1000;
    10'b10_1101_1101:qsin=-9'b1111_1001;
    10'b10_1101_1110:qsin=-9'b1111_1001;
    10'b10_1101_1111:qsin=-9'b1111_1001;
    10'b10_1110_0000:qsin=-9'b1111_1010;
    10'b10_1110_0001:qsin=-9'b1111_1010;
    10'b10_1110_0010:qsin=-9'b1111_1010;
    10'b10_1110_0011:qsin=-9'b1111_1010;
    10'b10_1110_0100:qsin=-9'b1111_1011;
    10'b10_1110_0101:qsin=-9'b1111_1011;
    10'b10_1110_0110:qsin=-9'b1111_1011;
    10'b10_1110_0111:qsin=-9'b1111_1100;
    10'b10_1110_1000:qsin=-9'b1111_1100;
    10'b10_1110_1001:qsin=-9'b1111_1100;
    10'b10_1110_1010:qsin=-9'b1111_1100;
    10'b10_1110_1011:qsin=-9'b1111_1100;
    10'b10_1110_1100:qsin=-9'b1111_1101;
    10'b10_1110_1101:qsin=-9'b1111_1101;
    10'b10_1110_1110:qsin=-9'b1111_1101;
    10'b10_1110_1111:qsin=-9'b1111_1101;
    10'b10_1111_0000:qsin=-9'b1111_1101;
    10'b10_1111_0001:qsin=-9'b1111_1101;
    10'b10_1111_0010:qsin=-9'b1111_1110;
    10'b10_1111_0011:qsin=-9'b1111_1110;
    10'b10_1111_0100:qsin=-9'b1111_1110;
    10'b10_1111_0101:qsin=-9'b1111_1110;
    10'b10_1111_0110:qsin=-9'b1111_1110;
    10'b10_1111_0111:qsin=-9'b1111_1110;
    10'b10_1111_1000:qsin=-9'b1111_1110;
    10'b10_1111_1001:qsin=-9'b1111_1110;
    10'b10_1111_1010:qsin=-9'b1111_1110;
    10'b10_1111_1011:qsin=-9'b1111_1110;
    10'b10_1111_1100:qsin=-9'b1111_1110;
    10'b10_1111_1101:qsin=-9'b1111_1110;
    10'b10_1111_1110:qsin=-9'b1111_1110;
    10'b10_1111_1111:qsin=-9'b1111_1110;
    10'b11_0000_0000:qsin=-9'b1111_1111; 
    
    
     
     10'b11_0000_0001:qsin=-9'b1111_1110;
     10'b11_0000_0010:qsin=-9'b1111_1110;
     10'b11_0000_0011:qsin=-9'b1111_1110;
     10'b11_0000_0100:qsin=-9'b1111_1110;
     10'b11_0000_0101:qsin=-9'b1111_1110;
     10'b11_0000_0110:qsin=-9'b1111_1110;
     10'b11_0000_0111:qsin=-9'b1111_1110;
     10'b11_0000_1000:qsin=-9'b1111_1110;
     10'b11_0000_1001:qsin=-9'b1111_1110;
     10'b11_0000_1010:qsin=-9'b1111_1110;
     10'b11_0000_1011:qsin=-9'b1111_1110;
     10'b11_0000_1100:qsin=-9'b1111_1110;
     10'b11_0000_1101:qsin=-9'b1111_1110;
     10'b11_0000_1110:qsin=-9'b1111_1110;
     10'b11_0000_1111:qsin=-9'b1111_1101;
     10'b11_0001_0000:qsin=-9'b1111_1101;
     10'b11_0001_0001:qsin=-9'b1111_1101;
     10'b11_0001_0010:qsin=-9'b1111_1101;
     10'b11_0001_0011:qsin=-9'b1111_1101;
     10'b11_0001_0100:qsin=-9'b1111_1101;
     10'b11_0001_0101:qsin=-9'b1111_1100;
     10'b11_0001_0110:qsin=-9'b1111_1100;
     10'b11_0001_0111:qsin=-9'b1111_1100;
     10'b11_0001_1000:qsin=-9'b1111_1100;
     10'b11_0001_1001:qsin=-9'b1111_1100;
     10'b11_0001_1010:qsin=-9'b1111_1011;
     10'b11_0001_1011:qsin=-9'b1111_1011;
     10'b11_0001_1100:qsin=-9'b1111_1011;
     10'b11_0001_1101:qsin=-9'b1111_1010;
     10'b11_0001_1110:qsin=-9'b1111_1010;
     10'b11_0001_1111:qsin=-9'b1111_1010;
     10'b11_0010_0000:qsin=-9'b1111_1010;
     10'b11_0010_0001:qsin=-9'b1111_1001;
     10'b11_0010_0010:qsin=-9'b1111_1001;
     10'b11_0010_0011:qsin=-9'b1111_1001;
     10'b11_0010_0100:qsin=-9'b1111_1000;
     10'b11_0010_0101:qsin=-9'b1111_1000;
     10'b11_0010_0110:qsin=-9'b1111_1000;
     10'b11_0010_0111:qsin=-9'b1111_0111;
     10'b11_0010_1000:qsin=-9'b1111_0111;
     10'b11_0010_1001:qsin=-9'b1111_0110;
     10'b11_0010_1010:qsin=-9'b1111_0110;
     10'b11_0010_1011:qsin=-9'b1111_0110;
     10'b11_0010_1100:qsin=-9'b1111_0101;
     10'b11_0010_1101:qsin=-9'b1111_0101;
     10'b11_0010_1110:qsin=-9'b1111_0100;
     10'b11_0010_1111:qsin=-9'b1111_0100;
     10'b11_0011_0000:qsin=-9'b1111_0100;
     10'b11_0011_0001:qsin=-9'b1111_0011;
     10'b11_0011_0010:qsin=-9'b1111_0011;
     10'b11_0011_0011:qsin=-9'b1111_0010;
     10'b11_0011_0100:qsin=-9'b1111_0010;
     10'b11_0011_0101:qsin=-9'b1111_0001;
     10'b11_0011_0110:qsin=-9'b1111_0001;
     10'b11_0011_0111:qsin=-9'b1111_0000;
     10'b11_0011_1000:qsin=-9'b1111_0000;
     10'b11_0011_1001:qsin=-9'b1110_1111;
     10'b11_0011_1010:qsin=-9'b1110_1111;
     10'b11_0011_1011:qsin=-9'b1110_1110;
     10'b11_0011_1100:qsin=-9'b1110_1101;
     10'b11_0011_1101:qsin=-9'b1110_1101;
     10'b11_0011_1110:qsin=-9'b1110_1100;
     10'b11_0011_1111:qsin=-9'b1110_1100;
     10'b11_0100_0000:qsin=-9'b1110_1011;
     10'b11_0100_0001:qsin=-9'b1110_1010;
     10'b11_0100_0010:qsin=-9'b1110_1010;
     10'b11_0100_0011:qsin=-9'b1110_1001;
     10'b11_0100_0100:qsin=-9'b1110_1001;
     10'b11_0100_0101:qsin=-9'b1110_1000;
     10'b11_0100_0110:qsin=-9'b1110_0111;
     10'b11_0100_0111:qsin=-9'b1110_0111;
     10'b11_0100_1000:qsin=-9'b1110_0110;
     10'b11_0100_1001:qsin=-9'b1110_0101;
     10'b11_0100_1010:qsin=-9'b1110_0101;
     10'b11_0100_1011:qsin=-9'b1110_0100;
     10'b11_0100_1100:qsin=-9'b1110_0011;
     10'b11_0100_1101:qsin=-9'b1110_0011;
     10'b11_0100_1110:qsin=-9'b1110_0010;
     10'b11_0100_1111:qsin=-9'b1110_0001;
     10'b11_0101_0000:qsin=-9'b1110_0000;
     10'b11_0101_0001:qsin=-9'b1110_0000;
     10'b11_0101_0010:qsin=-9'b1101_1111;
     10'b11_0101_0011:qsin=-9'b1101_1110;
     10'b11_0101_0100:qsin=-9'b1101_1101;
     10'b11_0101_0101:qsin=-9'b1101_1101;
     10'b11_0101_0110:qsin=-9'b1101_1100;
     10'b11_0101_0111:qsin=-9'b1101_1011;
     10'b11_0101_1000:qsin=-9'b1101_1010;
     10'b11_0101_1001:qsin=-9'b1101_1001;
     10'b11_0101_1010:qsin=-9'b1101_1001;
     10'b11_0101_1011:qsin=-9'b1101_1000;
     10'b11_0101_1100:qsin=-9'b1101_0111;
     10'b11_0101_1101:qsin=-9'b1101_0110;
     10'b11_0101_1110:qsin=-9'b1101_0101;
     10'b11_0101_1111:qsin=-9'b1101_0100;
     10'b11_0110_0000:qsin=-9'b1101_0100;
     10'b11_0110_0001:qsin=-9'b1101_0011; 
     10'b11_0110_0010:qsin=-9'b1101_0010;
     10'b11_0110_0011:qsin=-9'b1101_0001;
     10'b11_0110_0100:qsin=-9'b1101_0000;
     10'b11_0110_0101:qsin=-9'b1100_1111;
     10'b11_0110_0110:qsin=-9'b1100_1110;
     10'b11_0110_0111:qsin=-9'b1100_1101;
     10'b11_0110_1000:qsin=-9'b1100_1100;
     10'b11_0110_1001:qsin=-9'b1100_1011;
     10'b11_0110_1010:qsin=-9'b1100_1010;
     10'b11_0110_1011:qsin=-9'b1100_1001;
     10'b11_0110_1100:qsin=-9'b1100_1001;
     10'b11_0110_1101:qsin=-9'b1100_1000;
     10'b11_0110_1110:qsin=-9'b1100_0111;
     10'b11_0110_1111:qsin=-9'b1100_0110;
     10'b11_0111_0000:qsin=-9'b1100_0101;
     10'b11_0111_0001:qsin=-9'b1100_0100;
     10'b11_0111_0010:qsin=-9'b1100_0011;
     10'b11_0111_0011:qsin=-9'b1100_0010;
     10'b11_0111_0100:qsin=-9'b1100_0001;
     10'b11_0111_0101:qsin=-9'b1100_0000;
     10'b11_0111_0110:qsin=-9'b1011_1111;
     10'b11_0111_0111:qsin=-9'b1011_1101;
     10'b11_0111_1000:qsin=-9'b1011_1100;
     10'b11_0111_1001:qsin=-9'b1011_1011;
     10'b11_0111_1010:qsin=-9'b1011_1010;
     10'b11_0111_1011:qsin=-9'b1011_1001;
     10'b11_0111_1100:qsin=-9'b1011_1000;
     10'b11_0111_1101:qsin=-9'b1011_0111;
     10'b11_0111_1110:qsin=-9'b1011_0110;
     10'b11_0111_1111:qsin=-9'b1011_0101;
     10'b11_1000_0010:qsin=-9'b1011_0100;
     10'b11_1000_0000:qsin=-9'b1011_0011;
     10'b11_1000_0001:qsin=-9'b1011_0010;
     10'b11_1000_0011:qsin=-9'b1011_0000;
     10'b11_1000_0100:qsin=-9'b1010_1111;
     10'b11_1000_0101:qsin=-9'b1010_1110;
     10'b11_1000_0110:qsin=-9'b1010_1101;
     10'b11_1000_0111:qsin=-9'b1010_1100; 
     10'b11_1000_1000:qsin=-9'b1010_1011; 
     10'b11_1000_1001:qsin=-9'b1010_1010;
     10'b11_1000_1010:qsin=-9'b1010_1000;
     10'b11_1000_1011:qsin=-9'b1010_0111; 
     10'b11_1000_1100:qsin=-9'b1010_0110;
     10'b11_1000_1101:qsin=-9'b1010_0101;
     10'b11_1000_1110:qsin=-9'b1010_0100; 
     10'b11_1000_1111:qsin=-9'b1010_0010;
     10'b11_1001_0000:qsin=-9'b1010_0001;
     10'b11_1001_0001:qsin=-9'b1010_0000;
     10'b11_1001_0010:qsin=-9'b1001_1111;
     10'b11_1001_0011:qsin=-9'b1001_1110; 
     10'b11_1001_0100:qsin=-9'b1001_1100;
     10'b11_1001_0101:qsin=-9'b1001_1011;
     10'b11_1001_0110:qsin=-9'b1001_1010;
     10'b11_1001_0111:qsin=-9'b1001_1001;
     10'b11_1001_1000:qsin=-9'b1001_0111;
     10'b11_1001_1001:qsin=-9'b1001_0110;  
     10'b11_1001_1010:qsin=-9'b1001_0101;
     10'b11_1001_1011:qsin=-9'b1001_0100;
     10'b11_1001_1100:qsin=-9'b1001_0010;
     10'b11_1001_1101:qsin=-9'b1001_0001;
     10'b11_1001_1110:qsin=-9'b1001_0000;
     10'b11_1001_1111:qsin=-9'b1000_1110; 
     10'b11_1010_0000:qsin=-9'b1000_1101;
     10'b11_1010_0001:qsin=-9'b1000_1100;
     10'b11_1010_0010:qsin=-9'b1000_1011;
     10'b11_1010_0011:qsin=-9'b1000_1001;
     10'b11_1010_0100:qsin=-9'b1000_1000;
     10'b11_1010_0101:qsin=-9'b1000_0111;
     10'b11_1010_0110:qsin=-9'b1000_0101;
     10'b11_1010_0111:qsin=-9'b1000_0100;
     10'b11_1010_1000:qsin=-9'b1000_0011;
     10'b11_1010_1001:qsin=-9'b1000_0001;
     10'b11_1010_1010:qsin=-9'b1000_0000;
     10'b11_1010_1011:qsin=-9'b1000_0001;
     10'b11_1010_1100:qsin=-9'b0111_1111;
     10'b11_1010_1101:qsin=-9'b0111_1101;
     10'b11_1010_1110:qsin=-9'b0111_1100;
     10'b11_1010_1111:qsin=-9'b0111_1010;
     10'b11_1011_0000:qsin=-9'b0111_1001;
     10'b11_1011_0001:qsin=-9'b0111_1000;
     10'b11_1011_0010:qsin=-9'b0111_0110;
     10'b11_1011_0011:qsin=-9'b0111_0101;
     10'b11_1011_0100:qsin=-9'b0111_0100;
     10'b11_1011_0101:qsin=-9'b0111_0010;
     10'b11_1011_0110:qsin=-9'b0111_0001;
     10'b11_1011_0111:qsin=-9'b0110_1111;
     10'b11_1011_1000:qsin=-9'b0110_1110;
     10'b11_1011_1001:qsin=-9'b0110_1101;
     10'b11_1011_1010:qsin=-9'b0110_1011;
     10'b11_1011_1011:qsin=-9'b0110_1010;
     10'b11_1011_1100:qsin=-9'b0110_1000;
     10'b11_1011_1101:qsin=-9'b0110_0111;
     10'b11_1011_1110:qsin=-9'b0110_0101;
     10'b11_1011_1111:qsin=-9'b0110_0100;
     10'b11_1100_0000:qsin=-9'b0110_0011;
     10'b11_1100_0001:qsin=-9'b0110_0001;
     10'b11_1100_0010:qsin=-9'b0110_0000;
     10'b11_1100_0011:qsin=-9'b0101_1110;
     10'b11_1100_0100:qsin=-9'b0101_1101;
     10'b11_1100_0101:qsin=-9'b0101_1011;
     10'b11_1100_0110:qsin=-9'b0101_1010;
     10'b11_1100_0111:qsin=-9'b0101_1000;
     10'b11_1100_1000:qsin=-9'b0101_0111;
     10'b11_1100_1001:qsin=-9'b0101_0101;
     10'b11_1100_1010:qsin=-9'b0101_0100;
     10'b11_1100_1011:qsin=-9'b0101_0010;
     10'b11_1100_1100:qsin=-9'b0101_0001;
     10'b11_1100_1101:qsin=-9'b0100_1111;
     10'b11_1100_1110:qsin=-9'b0100_1110;
     10'b11_1100_1111:qsin=-9'b0100_1101;
     10'b11_1101_0000:qsin=-9'b0100_1011;
     10'b11_1101_0001:qsin=-9'b0100_1010;
     10'b11_1101_0010:qsin=-9'b0100_1000;
     10'b11_1101_0011:qsin=-9'b0100_0111;
     10'b11_1101_0100:qsin=-9'b0100_0101;
     10'b11_1101_0101:qsin=-9'b0100_0100;
     10'b11_1101_0110:qsin=-9'b0100_0010;
     10'b11_1101_0111:qsin=-9'b0100_0000;
     10'b11_1101_1000:qsin=-9'b0011_1111;
     10'b11_1101_1001:qsin=-9'b0011_1101; 
     10'b11_1101_1010:qsin=-9'b0011_1100;
     10'b11_1101_1011:qsin=-9'b0011_1010;
     10'b11_1101_1100:qsin=-9'b0011_1001;
     10'b11_1101_1101:qsin=-9'b0011_0111;
     10'b11_1101_1110:qsin=-9'b0011_0110;
     10'b11_1101_1111:qsin=-9'b0011_0100;
     10'b11_1110_0000:qsin=-9'b0011_0011;
     10'b11_1110_0001:qsin=-9'b0011_0001;
     10'b11_1110_0010:qsin=-9'b0011_0000;
     10'b11_1110_0011:qsin=-9'b0010_1110;
     10'b11_1110_0100:qsin=-9'b0010_1101;
     10'b11_1110_0101:qsin=-9'b0010_1011;
     10'b11_1110_0110:qsin=-9'b0010_1010; 
     10'b11_1110_0111:qsin=-9'b0010_1000;
     10'b11_1110_1000:qsin=-9'b0010_0110;
     10'b11_1110_1001:qsin=-9'b0010_0101;
     10'b11_1110_1010:qsin=-9'b0010_0011; 
     10'b11_1110_1011:qsin=-9'b0010_0010;
     10'b11_1110_1100:qsin=-9'b0010_0000;
     10'b11_1110_1101:qsin=-9'b0001_1111;
     10'b11_1110_1110:qsin=-9'b0001_1101;
     10'b11_1110_1111:qsin=-9'b0001_1100;
     10'b11_1111_0000:qsin=-9'b0001_1010;
     10'b11_1111_0001:qsin=-9'b0001_1000; 
     10'b11_1111_0010:qsin=-9'b0001_0111;
     10'b11_1111_0011:qsin=-9'b0001_0101;
     10'b11_1111_0100:qsin=-9'b0001_0100;
     10'b11_1111_0101:qsin=-9'b0001_0010;
     10'b11_1111_0110:qsin=-9'b0001_0001;
     10'b11_1111_0111:qsin=-9'b0000_1111;
     10'b11_1111_1000:qsin=-9'b0000_1110; 
     10'b11_1111_1001:qsin=-9'b0000_1010; 
     10'b11_1111_1010:qsin=-9'b0000_1001;
     10'b11_1111_1011:qsin=-9'b0000_0111; 
     10'b11_1111_1100:qsin=-9'b0000_0110; 
     10'b11_1111_1101:qsin=-9'b0000_0100;
     10'b11_1111_1110:qsin=-9'b0000_0011;  
     10'b11_1111_1111:qsin=-9'b0000_0001;


           endcase
         end
       
 
  endmodule