Honored ContributorI need to perform convolution between 2 matrices in verilog : a 7x7 matrix that holds complex double values and a 72x300 matrix that stores double values.
How should I store such a matrix in rom? Also creating 72x300 matrix involves storing large number of coefficients. I am not able to understand how to initialize them and use them to perform convolution. Please help!
Honored ContributorHonored ContributorWhat exactly are you having problems with? Have you even attempted to write any code?
Honored ContributorMy query is how to build a matrix in verilog? without which how can i perform convolution?
Honored ContributorIf you have a verilog or VHDL file opened in Quartus you can try inserting a ROM template that will drop in code that implements a ROM. If I remember correctly it's under "edit" --> "template"
Honored ContributorFor a 72x300 matrix you could use a rom with 128 by 512 addresses (64k). The Upper 7 bit is your first axis, the lower 9 addresses is your second axis in this case.
Depending on the data width this will be a big RAM, at least for a FPGA onchip Memory. Assuming that your double value has 64bit you need 512kByte. The 7 by 7 matrix needs 64 adresses with 128bit each:
module array (
input x_i,
input y_i,
output re_o,
output im_o
);
reg array;
initial
begin
array = {64'h00000000deadbeef, 64'h00000000affedead};
array = {64'h0000000000000000, 64'h0000000011111111};
array = {64'h0000000011111111, 64'h0000000022221111};
end
assign re_o = array;
assign im_o = array;
endmodule
