generate生成语句可以动态的生成verilog代码,当对矢量中的多个位进行重复操作 时,或者当进行多个模块的实例引用的重复操作时,或者根据参数的定义来确定程序中是否应该包含某段Verilog代码的时候,使用生成语句能大大简化程序的编写过程。生成语句生成的实例范围,关键字generate-endgenerate用来指定该范围。生成实例可以是以下的...
If I unrolled the generate block loop manually (which is very painful!), the simulator runs fine. I tried to instantiate a dummy SINE block outside generate loop to make config view pick it up (which it did), but I got the same error. Is there ...
1.在generate中的要求和在module中很类似,因为generate就是生成一个电路,电路结构就是你在generate中表述的内容。 2.可以独立存在于generate块或者module的应当是变量声明,常量定义,assign赋值,门级语句,块声明,实例调用方法(I/O匹配表);像if-else,while,for,case这类的语句都是高级语句,是不能独立出现的,必须放在...
SystemVerilog added the ability to put the genvar inside the for loop. Verilog-2005 made the generate/endgenerate keywords optional. The compiler should be able to tell from the context whether the for-loop is a generate-for or a procedural-for. I would try rem...
genvar i; generate for (i = 0; i < 4; i++) begin : loop xor xori ( .a(data[i*8 +: 8]), .b(parity[i]), .y(result[i]) ); end endgenerate 断言(Assertion) 用于在设计中嵌入检查点,以验证设计是否满足预期行为。 assert (a == b, "Error: a is not equal to b at time ...
阻塞赋值的行为限制了这些运算符在RTL代码中的使用。实际上++或是+=主要都是在for-loop中使用的。 建议:不要在那些功能涉及时钟边缘更新的地方使用自增,自减和赋值运算符。 5.3 转换 Casting SystemVerilog为Verilog引入了转换运算符’( )。共有三种类型的转换运算符,它们都可综合: ...
You can use a generate for loop instead of foreach. genvar bit_number; generate for(bit_number=0;nit_number<?;bit_number=bit_number\+1) begin : if ( selector [ bit_number ] == 1'b1 ) assign destination [ bit_number ] = source_1 ; else assign destination [ bit_number ] = ...
// Use the "dword view" of the union in a generate loop generate genvar gi; for (gi=0; gi<2; gi=gi+1) begin : gen_mem // instantiate a 32-bit memory mem_32 u_mem ( .D (my_opcode_in.dword[gi]), .Q (my_opcode_out.dword[gi]), ...
• Array foreach loop • Special system functions for working with arrays • The $bits “sizeof” system function 5.1 Structures Design data often has logical groups of signals, such as all the control signals for a bus protocol, or all the signals used within a state controller. The ...
In your example, just handle the "out" assignment from within the same generate loop: generate if (L>0) begin : L_non_zero reg pipe[W-1:0][L-1]; assign out[W-1:0] = pipe[L-1]; // Note your indexing of pipe is wrong too - see the other thre...