module abc9_test001(input a, output o); assign o = a; endmodule module abc9_test002(input [1:0] a, output o); assign o = a[1]; endmodule module abc9_test003(input [1:0] a, output [1:0] o); assign o = a; endmodule module abc9_test004(input [1:0] a, output o); assign o = ^a; endmodule module abc9_test005(input [1:0] a, output o, output p); assign o = ^a; assign p = ~o; endmodule module abc9_test006(input [1:0] a, output [2:0] o); assign o[0] = ^a; assign o[1] = ~o[0]; assign o[2] = o[1]; endmodule module abc9_test007(input a, output o); wire b, c; assign c = ~a; assign b = c; abc9_test007_sub s(b, o); endmodule module abc9_test007_sub(input a, output b); assign b = a; endmodule module abc9_test008(input a, output o); wire b, c; assign b = ~a; assign c = b; abc9_test008_sub s(b, o); endmodule module abc9_test008_sub(input a, output b); assign b = ~a; endmodule module abc9_test009(inout io, input oe); reg latch; always @(io or oe) if (!oe) latch <= io; assign io = oe ? ~latch : 1'bz; endmodule module abc9_test010(inout [7:0] io, input oe); reg [7:0] latch; always @(io or oe) if (!oe) latch <= io; assign io = oe ? ~latch : 8'bz; endmodule module abc9_test011(inout io, input oe); reg latch; always @(io or oe) if (!oe) latch <= io; //assign io = oe ? ~latch : 8'bz; endmodule module abc9_test012(inout io, input oe); reg latch; //always @(io or oe) // if (!oe) // latch <= io; assign io = oe ? ~latch : 8'bz; endmodule module abc9_test013(inout [3:0] io, input oe); reg [3:0] latch; always @(io or oe) if (!oe) latch[3:0] <= io[3:0]; else latch[7:4] <= io; assign io[3:0] = oe ? ~latch[3:0] : 4'bz; assign io[7:4] = !oe ? {latch[4], latch[7:3]} : 4'bz; endmodule module abc9_test014(inout [7:0] io, input oe); abc9_test012_sub sub(io, oe); endmodule module abc9_test012_sub(inout [7:0] io, input oe); reg [7:0] latch; always @(io or oe) if (!oe) latch[3:0] <= io; else latch[7:4] <= io; assign io[3:0] = oe ? ~latch[3:0] : 4'bz; assign io[7:4] = !oe ? {latch[4], latch[7:3]} : 4'bz; endmodule module abc9_test015(input a, output b, input c); assign b = ~a; (* keep *) wire d; assign d = ~c; endmodule module abc9_test016(input a, output b); assign b = ~a; (* keep *) reg c; always @* c <= ~a; endmodule module abc9_test017(input a, output b); assign b = ~a; (* keep *) reg c; always @* c = b; endmodule module abc9_test018(input a, output b, output c); assign b = ~a; (* keep *) wire [1:0] d; assign c = &d; endmodule module abc9_test019(input a, output b); assign b = ~a; (* keep *) reg [1:0] c; reg d; always @* d <= &c; endmodule module abc9_test020(input a, output b); assign b = ~a; (* keep *) reg [1:0] c; (* keep *) reg d; always @* d <= &c; endmodule // Citation: https://github.com/alexforencich/verilog-ethernet module abc9_test021(clk, rst, s_eth_hdr_valid, s_eth_hdr_ready, s_eth_dest_mac, s_eth_src_mac, s_eth_type, s_eth_payload_axis_tdata, s_eth_payload_axis_tkeep, s_eth_payload_axis_tvalid, s_eth_payload_axis_tready, s_eth_payload_axis_tlast, s_eth_payload_axis_tid, s_eth_payload_axis_tdest, s_eth_payload_axis_tuser, m_eth_hdr_valid, m_eth_hdr_ready, m_eth_dest_mac, m_eth_src_mac, m_eth_type, m_eth_payload_axis_tdata, m_eth_payload_axis_tkeep, m_eth_payload_axis_tvalid, m_eth_payload_axis_tready, m_eth_payload_axis_tlast, m_eth_payload_axis_tid, m_eth_payload_axis_tdest, m_eth_payload_axis_tuser); input clk; output [47:0] m_eth_dest_mac; input m_eth_hdr_ready; output m_eth_hdr_valid; output [7:0] m_eth_payload_axis_tdata; output [7:0] m_eth_payload_axis_tdest; output [7:0] m_eth_payload_axis_tid; output m_eth_payload_axis_tkeep; output m_eth_payload_axis_tlast; input m_eth_payload_axis_tready; output m_eth_payload_axis_tuser; output m_eth_payload_axis_tvalid; output [47:0] m_eth_src_mac; output [15:0] m_eth_type; input rst; input [191:0] s_eth_dest_mac; output [3:0] s_eth_hdr_ready; input [3:0] s_eth_hdr_valid; input [31:0] s_eth_payload_axis_tdata; input [31:0] s_eth_payload_axis_tdest; input [31:0] s_eth_payload_axis_tid; input [3:0] s_eth_payload_axis_tkeep; input [3:0] s_eth_payload_axis_tlast; output [3:0] s_eth_payload_axis_tready; input [3:0] s_eth_payload_axis_tuser; input [3:0] s_eth_payload_axis_tvalid; input [191:0] s_eth_src_mac; input [63:0] s_eth_type; (* keep *) wire [0:0] grant, request; wire a; not u0 ( a, grant[0] ); and u1 ( request[0], s_eth_hdr_valid[0], a ); (* keep *) MUXF8 u2 ( .I0(1'bx), .I1(1'bx), .O(o), .S(1'bx) ); arbiter arb_inst ( .acknowledge(acknowledge), .clk(clk), .grant(grant), .grant_encoded(grant_encoded), .grant_valid(grant_valid), .request(request), .rst(rst) ); endmodule module arbiter (clk, rst, request, acknowledge, grant, grant_valid, grant_encoded); input [3:0] acknowledge; input clk; output [3:0] grant; output [1:0] grant_encoded; output grant_valid; input [3:0] request; input rst; endmodule (* abc9_box, blackbox *) module MUXF8(input I0, I1, S, output O); specify (I0 => O) = 0; (I1 => O) = 0; (S => O) = 0; endspecify endmodule // Citation: https://github.com/alexforencich/verilog-ethernet module abc9_test022 ( input wire clk, 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; endmodule // Citation: https://github.com/riscv/riscv-bitmanip module abc9_test023 #( 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 module abc9_test024(input [3:0] i, output [3:0] o); abc9_test024_sub a(i[1:0], o[1:0]); endmodule module abc9_test024_sub(input [1:0] i, output [1:0] o); assign o = i; endmodule module abc9_test025(input [3:0] i, output [3:0] o); abc9_test024_sub a(i[2:1], o[2:1]); endmodule module abc9_test026(output [3:0] o, p); assign o = { 1'b1, 1'bx }; assign p = { 1'b1, 1'bx, 1'b0 }; endmodule module abc9_test030(input [3:0] d, input en, output reg [3:0] q); always @* if (en) q <= d; endmodule module abc9_test031(input clk1, clk2, d, output reg q1, q2); always @(posedge clk1) q1 <= d; always @(negedge clk2) q2 <= q1; endmodule module abc9_test032(input clk, d, r, output reg q); always @(posedge clk or posedge r) if (r) q <= 1'b0; else q <= d; endmodule module abc9_test033(input clk, d, r, output reg q); always @(negedge clk or posedge r) if (r) q <= 1'b1; else q <= d; endmodule module abc9_test034(input clk, d, output reg q1, q2); always @(posedge clk) q1 <= d; always @(posedge clk) q2 <= q1; endmodule module abc9_test035(input clk, d, output reg [1:0] q); always @(posedge clk) q[0] <= d; always @(negedge clk) q[1] <= q[0]; endmodule module abc9_test036(input A, B, S, output [1:0] O); (* keep *) MUXF8 m ( .I0(I0), .I1(I1), .O(O[0]), .S(S) ); MUXF8 m2 ( .I0(I0), .I1(I1), .O(O[1]), .S(S) ); endmodule