New ContributorHow to force manually in ModelSim one dada bus with value like sin(x)
Hi, I am checking to force manually some data bus like: input[10..0] in MOdelSim like here(by console):
force input[0] 0 0, 10, 10, ...... - repeat 200
force input[1] 0 0, 10, 10, ...... - repeat 200
ecc
There is a way to do it in automatic? I means, there is a way to load some file prewrite and add to console in some how? Or mauve by using some verilog or VHLD script that running when i click the simulation start in modelSIM
In that case, you may create a module for the sine function:
module sine_generator (
input wire clk,
input wire reset,
output reg signed [10:0] sine_out
);
reg [6:0] index; // 7-bit index for 128 samples
reg signed [10:0] sine_lut [0:127]; // 128-point lookup table
initial begin
// Precompute sine values and load them into the LUT
sine_lut[0] = 0;
sine_lut[1] = 50;
sine_lut[2] = 100;
sine_lut[3] = 150;
sine_lut[4] = 200;
sine_lut[5] = 250;
// ... (continue with the full sine wave values up to 127)
sine_lut[127] = -50;
end
always @(posedge clk or posedge reset) begin
if (reset) begin
index <= 0;
sine_out <= 0;
end else begin
sine_out <= sine_lut[index]; // Output the sine value
index <= index + 1; // Increment index for next sample
end
end
endmodule
