macc_simple_xmap.v « PRESENTATION_ExAdv « manual - iCE40/yosys - clone of https://github.com/YosysHQ/yosys

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module macc_16_16_32(a, b, c, y);
input [15:0] a, b;
input [31:0] c;
output [31:0] y;
assign y = a*b + c;
endmodule

n class="p">[11:0] y; assign {y[11:4], y[1:0], y[3:2]} = {a, b, -{c, d}, ~{e, f}}; endmodule