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8bitworkshop/test/cli/verilog/t_func_range.v
2021-07-06 22:26:29 -05:00

65 lines
1.4 KiB
Verilog

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2003 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module t (clk);
input clk;
// verilator lint_off WIDTH
`define INT_RANGE 31:0
`define INT_RANGE_MAX 31
`define VECTOR_RANGE 63:0
reg [`INT_RANGE] stashb, stasha, stashn, stashm;
function [`VECTOR_RANGE] copy_range;
input [`VECTOR_RANGE] y;
input [`INT_RANGE] b;
input [`INT_RANGE] a;
input [`VECTOR_RANGE] x;
input [`INT_RANGE] n;
input [`INT_RANGE] m;
begin
copy_range = y;
stashb = b;
stasha = a;
stashn = n;
stashm = m;
end
endfunction
parameter DATA_SIZE = 16;
parameter NUM_OF_REGS = 32;
reg [NUM_OF_REGS*DATA_SIZE-1 : 0] memread_rf;
reg [DATA_SIZE-1:0] memread_rf_reg;
always @(memread_rf) begin : memread_convert
memread_rf_reg = copy_range('d0, DATA_SIZE-'d1, DATA_SIZE-'d1, memread_rf,
DATA_SIZE-'d1, DATA_SIZE-'d1);
end
integer cyc; initial cyc=1;
always @ (posedge clk) begin
if (cyc!=0) begin
cyc <= cyc + 1;
if (cyc==1) begin
memread_rf = 512'haa;
end
if (cyc==3) begin
if (stashb != 'd15) $stop;
if (stasha != 'd15) $stop;
if (stashn != 'd15) $stop;
if (stashm != 'd15) $stop;
$write("*-* All Finished *-*\n");
$finish;
end
end
end
endmodule