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[/] [pairing/] [trunk/] [rtl/] [f3.v] - Diff between revs 5 and 8
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| Rev 5 |
Rev 8 |
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Line 4... |
output [1:0] C;
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output [1:0] C;
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wire a0, a1, b0, b1, c0, c1;
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wire a0, a1, b0, b1, c0, c1;
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assign {a1, a0} = A;
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assign {a1, a0} = A;
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assign {b1, b0} = B;
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assign {b1, b0} = B;
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assign C = {c1, c0};
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assign C = {c1, c0};
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assign c0 = ( a0 & !a1 & !b0 & !b1) |
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assign c0 = ( a0 & ~a1 & ~b0 & ~b1) |
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(!a0 & !a1 & b0 & !b1) |
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(~a0 & ~a1 & b0 & ~b1) |
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(!a0 & a1 & !b0 & b1) ;
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(~a0 & a1 & ~b0 & b1) ;
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assign c1 = (!a0 & a1 & !b0 & !b1) |
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assign c1 = (~a0 & a1 & ~b0 & ~b1) |
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( a0 & !a1 & b0 & !b1) |
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( a0 & ~a1 & b0 & ~b1) |
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(!a0 & !a1 & !b0 & b1) ;
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(~a0 & ~a1 & ~b0 & b1) ;
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endmodule
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endmodule
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// f3_sub: C == A-B (mod 3)
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// f3_sub: C == A-B (mod 3)
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module f3_sub(A, B, C);
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module f3_sub(A, B, C);
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input [1:0] A, B;
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input [1:0] A, B;
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input [1:0] B;
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input [1:0] B;
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output [1:0] C;
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output [1:0] C;
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wire a0, a1, b0, b1;
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wire a0, a1, b0, b1;
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assign {a1, a0} = A;
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assign {a1, a0} = A;
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assign {b1, b0} = B;
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assign {b1, b0} = B;
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assign C[0] = (!a1 & a0 & !b1 & b0) | (a1 & !a0 & b1 & !b0);
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assign C[0] = (~a1 & a0 & ~b1 & b0) | (a1 & ~a0 & b1 & ~b0);
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assign C[1] = (!a1 & a0 & b1 & !b0) | (a1 & !a0 & !b1 & b0);
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assign C[1] = (~a1 & a0 & b1 & ~b0) | (a1 & ~a0 & ~b1 & b0);
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endmodule
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endmodule
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// c == a+1 (mod 3)
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module f3_add1(a, c);
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input [1:0] a;
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output [1:0] c;
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assign c[0] = (~a[0]) & (~a[1]);
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assign c[1] = a[0] & (~a[1]);
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endmodule
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// c == a-1 (mod 3)
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module f3_sub1(a, c);
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input [1:0] a;
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output [1:0] c;
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assign c[0] = (~a[0]) & a[1];
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assign c[1] = (~a[0]) & (~a[1]);
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endmodule
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