这个错误的直接原因是Verilog不支持Data_i[i*8-1:i*8-8] 这种语法。如果把向量的位选取写成vect[ms...
我这段verilog为什么报错 i is not a constant？改成[(i*8-8)+:8]试试。不过还有很多其他问题，...
这个是用c语言写电路。那个for里面的i需要定义为genvar i；另外从你写的逻辑看，你是希望那个shift_reg不断的变化，但是你这么写的话。系统会认为是一个组合逻辑，所以会立刻计算出结果。你需要写成时续逻辑的电路，用always @（posedge clk）begin ...end 兄弟，北化的，师从何宾？
assign 不能放在if里，除非是generate if。如果用always，就不能用assign
is high forces q to remain at 0. This condition may or may not be correct depending on the actual flip flop. However, this is not the main problem with this model. Notice that when reset goes low, that set is still high. In a real flip flop this will cause the output to go to ...
Error: Error (10734): Verilog HDL error at seg7_controller.v(82): avs_s1_address is not a constant File: f:/fpga/niosii_mpc/de3_seg/ip/seg7_controller/seg7_controller.v Line: 82 错误提示解释说avs_s1_address不是常值。代码可以修改为: ...
CONSTANT 常量名:数据类型 :=数值; parameter 常量名1 = 数值1, 常量名2 = 数值2,…,常量名n = 数值n; 11 常量表示不一样 用双引号. 例如:B"011100" <位宽>’<进制符号><数字> 例如:8’b10110011 12 数组定义方式不一样 定义4位数组A:A(3 DOWNTO 0 ) 或者A(0 TO 3) 定义4位数组A:A[3:...
晕，你要给count赋值就要把count定义成reg型的，不能定义成integer（整数型），改成reg[31:0]count试试。把
18.Warning: Using design file lpm_fifo0.v, which is not specified as a design file for the current project, but contains definitions for 1 design units and 1 entities in project Info: Found entity 1: lpm_fifo0 原因:模块不是在本项目生成的,而是直接copy了别的项目的原理图和源程序 而生成的...
input f; / f is the input variable to the NOT gate output e; / e is the output variable of the NOT gate assign e = ~f; endmodule module d_ff_st(q_out, qbar_out, d_in, clk_in ); //* this module defines a d flip flop which will be design with NAND gate and NOT gate ...