如何在两个Verilog模块之间传递数组结构 [英] How to pass array structure between two verilog modules
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问题描述
我正在尝试在两个模块之间传递作为reg [0:31] instructionmem [0:31]的数组结构.
I am trying to pass a array structure as reg [0:31]instructionmem[0:31] between two modules.
我将其编码如下:
模块1:
module module1(instructionmem);
output reg [0:31]instructionmem[0:31];
------------------
----lines of code---
---------------
endmodule
模块2:
module module2(instructionmem);
input [0:31]instructionmem[0:31];
--------------------------------
-----line of code---------------
-------------------------------
endmodule
测试台:
module test_bench();
wire [0:31]instructionmem[0:31];
module1 m1(instructionmem);
module2 m2(instructionmem);
endmodule
我在此实现中遇到错误.那么我们如何发送这样的数组结构呢?
I am getting errors for this implementation. So how can we send such array structures ?
推荐答案
在Verilog中是不可能的. (请参阅Verilog 2005标准文档的第12.3.3节,语法12-4,IEEE标准1364-2005.)
This is not possible in Verilog. (See sec. 12.3.3, Syntax 12-4 of the Verilog 2005 standard document, IEEE Std. 1364-2005.)
相反,您应该展平"数组并将其作为简单向量传递,例如:
Instead you should "flatten" the array and pass it as a simple vector, e.g.:
module module1(instructionmem);
output [32*32-1:0] instructionmem;
reg [31:0] instructionmem_array [31:0];
genvar i;
generate for (i = 0; i < 32; i = i+1) begin:instmem
assign instructionmem[32*i +: 32] = instructionmem_array[i];
end endgenerate
endmodule
module module2(instructionmem);
input [32*32-1:0] instructionmem;
reg [31:0] instructionmem_array [31:0];
integer i;
always @*
for (i = 0; i < 32; i = i+1)
instructionmem_array[i] = instructionmem[32*i +: 32];
endmodule
module test_bench(instructionmem);
output [32*32-1:0] instructionmem;
module1 m1(instructionmem);
module2 m2(instructionmem);
endmodule
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