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Diffstat (limited to 'tests/arch/ecp5/mux.v')
-rw-r--r-- | tests/arch/ecp5/mux.v | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/tests/arch/ecp5/mux.v b/tests/arch/ecp5/mux.v new file mode 100644 index 000000000..782424a9b --- /dev/null +++ b/tests/arch/ecp5/mux.v @@ -0,0 +1,66 @@ +module mux2 (S,A,B,Y); + input S; + input A,B; + output reg Y; + + always @(*) + Y = (S)? B : A; +endmodule + +module mux4 ( S, D, Y ); + +input[1:0] S; +input[3:0] D; +output Y; + +reg Y; +wire[1:0] S; +wire[3:0] D; + +always @* +begin + case( S ) + 0 : Y = D[0]; + 1 : Y = D[1]; + 2 : Y = D[2]; + 3 : Y = D[3]; + endcase +end + +endmodule + +module mux8 ( S, D, Y ); + +input[2:0] S; +input[7:0] D; +output Y; + +reg Y; +wire[2:0] S; +wire[7:0] D; + +always @* +begin + case( S ) + 0 : Y = D[0]; + 1 : Y = D[1]; + 2 : Y = D[2]; + 3 : Y = D[3]; + 4 : Y = D[4]; + 5 : Y = D[5]; + 6 : Y = D[6]; + 7 : Y = D[7]; + endcase +end + +endmodule + +module mux16 (D, S, Y); + input [15:0] D; + input [3:0] S; + output Y; + +assign Y = D[S]; + +endmodule + |