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Add abc_test024

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This commit is contained in:
Eddie Hung 2019-05-29 15:24:38 -07:00
parent 1423384367
commit aa2380c17a
1 changed files with 19 additions and 6 deletions
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25
tests/simple_abc9/abc9.v
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@ -230,10 +230,23 @@ module abc9_test022
input wire i,
output wire [7:0] m_eth_payload_axis_tkeep
);
reg [7:0] m_eth_payload_axis_tkeep_reg = 8'd0;
assign m_eth_payload_axis_tkeep = m_eth_payload_axis_tkeep_reg;
always @(posedge clk)
m_eth_payload_axis_tkeep_reg <= i ? 8'hff : 8'h0f;
reg [7:0] m_eth_payload_axis_tkeep_reg = 8'd0;
assign m_eth_payload_axis_tkeep = m_eth_payload_axis_tkeep_reg;
always @(posedge clk)
m_eth_payload_axis_tkeep_reg <= i ? 8'hff : 8'h0f;
endmodule
// Citation: https://github.com/riscv/riscv-bitmanip
// TODO: yosys -p "synth_xilinx -abc9 -top abc9_test024" abc9.v -q
// returns before 14233843
// Warning: Wire abc9_test024.\dout [1] is used but has no driver.
module abc9_test024 #(
parameter integer N = 2,
parameter integer M = 2
) (
input [7:0] din,
output [M-1:0] dout
);
wire [2*M-1:0] mask = {M{1'b1}};
assign dout = (mask << din[N-1:0]) >> M;
endmodule