我收到了错误
[Synth 8-2576]不允许对非登记结果进行程序性分配["lpm_mult.v":29]
我究竟做错了什么？
module lpm_mult (
dataa, datab, // multiplicand,multiplier
sum, // partial sum
clock, // pipeline clock
clken, // clock enable
aclr, // asynch clear
result // product
);
input clock;
input clken;
input aclr;
input [31:0] dataa;
input [31:0] datab;
input [63:0] sum;
output [63:0] result;
always @ (clken or posedge clock) begin
if (1==clken) begin
assign result = dataa * datab;
end
end
endmodule