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FPGA设计中RAM和ROM初始化的方法
2022-06-21 20:40:00 【吉大秦少游】
文章目录
FPGA设计中RAM和ROM作为存储器用来存储可变或不可变类型的数据,根据使用场景不同有不同的初始化方法。ROM初始化一般是加载固定数据,RAM声明时默认为不定态数据,初始化时可以让数据为全1或者全0。
RAM的初始化方法
方法1:小型RAM复位时按地址写入初值
针对小型的RAM可以直接在复位时按地址写入初值,实例如下。
always @(posedge Wr_clk or negedge rst_n)begin
if (!rst_n) begin
Mem[0] <= 24'b0;
Mem[1] <= 24'b0;
Mem[2] <= 24'b0;
Mem[3] <= 24'b0;
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