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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2005 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module t (/*AUTOARG*/
// Inputs
clk
);
input clk;
// Some inputs we'll set to random values
reg [6:0] addr;
reg [6:0] e0;
reg [5:0] e1;
reg [5:0] e2;
wire [7:0] data;
reg [2:0] wrapcheck_a;
reg [2:0] wrapcheck_b;
test test (/*AUTOINST*/
// Outputs
.data (data[7:0]),
// Inputs
.addr (addr[6:0]),
.e0 (e0[6:0]),
.e1 (e1[5:0]),
.e2 (e2[5:0]));
always @(/*AS*/addr) begin
case(addr[2:0])
3'd0+3'd0: wrapcheck_a = 3'h0;
3'd0+3'd1: wrapcheck_a = 3'h1;
3'd0+3'd2: wrapcheck_a = 3'h2;
3'd0+3'd3: wrapcheck_a = 3'h3;
default: wrapcheck_a = 3'h4;
endcase
case(addr[2:0])
3'd0+0: wrapcheck_b = 3'h0;
3'd1+1: wrapcheck_b = 3'h1;
3'd2+2: wrapcheck_b = 3'h2;
3'd3+3: wrapcheck_b = 3'h3;
default: wrapcheck_b = 3'h4;
endcase
end
integer cyc; initial cyc=1;
always @ (posedge clk) begin
if (cyc!=0) begin
cyc <= cyc + 1;
//$write("%d %x %x %x\n", cyc, data, wrapcheck_a, wrapcheck_b);
if (cyc==1) begin
addr <= 7'h28;
e0 <= 7'h11;
e1 <= 6'h02;
e2 <= 6'h03;
end
if (cyc==2) begin
addr <= 7'h2b;
if (data != 8'h11) $stop;
end
if (cyc==3) begin
addr <= 7'h2c;
if (data != 8'h03) $stop;
if (wrapcheck_a != 3'h3) $stop;
if (wrapcheck_b != 3'h4) $stop;
end
if (cyc==4) begin
addr <= 7'h0;
if (data != 8'h00) $stop;
if (wrapcheck_a != 3'h4) $stop;
if (wrapcheck_b != 3'h2) $stop;
end
if (cyc==5) begin
if (data != 8'h00) $stop;
end
if (cyc==9) begin
$write("*-* All Finished *-*\n");
$finish;
end
end
end
endmodule
/* verilator lint_off WIDTH */
`define AI 7'h28
module test (/*AUTOARG*/
// Outputs
data,
// Inputs
addr, e0, e1, e2
);
output [7:0] data;
input [6:0] addr;
input [6:0] e0;
input [5:0] e1, e2;
reg [7:0] data;
always @(/*AS*/addr or e0 or e1 or e2)
begin
case (addr)
`AI: data = {e0[6], 1'b0, e0[5:0]};
`AI+1: data = e1;
`AI+2,
`AI+3: data = e2;
default: data = 0;
endcase
end
endmodule
// Local Variables:
// eval:(verilog-read-defines)
// verilog-auto-sense-defines-constant: t
// End:
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