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 v...
不过还有很多其他问题，Verilog不是这么写的，你这是在当C语言在写。不要用repeat，这种语句不一定能综...
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 ...
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 ...
1.Error (10028): Can't resolve multiple constant driversfornet…… 解析:不能在两个以上always内对同一变量赋值,这个细节一般看书看资料会看到,但是编程时,就是没想到。 2.Error (10158): Verilog HDL Module Declaration error at clkseg.v(1): port "XXXX" is not declared as port ...
实例代码如下:如果这样写编译时会报错: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
Error (10742): Verilog HDL error at axis_thrower.sv(6): constant expression cannot contain a hierarchical identifier This should not be the case. With both Vivado and Verilator, the expression is allowed because their compilers deduce what is obviously constant...
Similarly, not recommended indicates that a course of action is unsuitable, but not prohibited. There may be reasons to use other options, but the implications and reasons for doing so must be fully understood. The word may indicates a course of action is permitted and optional. The word ...
结构体结构ARCHITECTURE 结构体名 OF 实体名 IS 说明语句说明语句BEGIN 功能描述语句功能描述语句 END 12、ARCHITECTURE 结构体名 ;常数常数 CONSTANT a: INTEGER:=15; 信号信号 SIGNAL b: STD_LOGIC;COMPNENT cnt10PORT();进程语句进程语句 PROCESS信号赋值语句信号赋值语句 b THEN RETURN a;ELSE RETURN b;END ...