[英]How can I OR every element in two dimensional array in one clock cycle? Verilog
wire [a-1:0] array [b-1:0]; 线[a-1:0]阵列[b-1:0];
How can I OR the b array elements and get an a bits result in 1 clk? 如何对b数组元素进行OR运算并得到a位结果,结果为1 clk? Thank you
谢谢
Verilog ways: Verilog方式:
reg [a-1:0] or_of_array;
integer i;
always @* begin
or_of_array = array[0];
for(i=1; i<b; i=i+1) begin
or_of_array = or_of_array | array[i];
end
end
SystemVerilog way: SystemVerilog方式:
logic [a-1:0] or_of_array;
always_comb begin
or_of_array = 0;
foreach(array[i]) begin
or_of_array |= array[i];
end
end
SystemVerilog also supports wire [a-1:0] wire_or_of_array = array.or();
SystemVerilog还支持
wire [a-1:0] wire_or_of_array = array.or();
but may not be supported by all synthesizer. 但可能并非所有合成器都支持。
You can directly use a loop to or each element with previous element. 您可以直接使用循环,也可以直接使用每个元素与上一个元素。
wire [a-1:0] op;
// Inside an always block
for (int i = 0; i < array.size(); i++)
op = op | array[i];
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