`ifdef AVERAGE //求平均法 GRAY=(R+B+G)/3=((R+B+G)*85)>>8 ...//方法 1 `endif `ifdef FORMULA //灰度转换公式 Gray = R*0.299+G*0.587+B*0.114 ...//方法 2 `endif `ifdef LUT//查找表方式 ...//方法 3 `endif endmodule 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. ...
1 // 第一种形式: 2 `ifdef 宏名 3 程序段 4 `endif 5 6 //第二种形式 7 `ifdef 宏名 8 程序段1 9 `else 10 程序段2 11 `endif 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 1 `define sum a+b 2 module condition_compile(out,a,b,c); 3 output[2:0] out; 4 input a,b,c...
知乎的markdown格式支持太大粪了,标题还只有两级标题,这下只能凑活看了。 Chisel提供了svsim类,但是chisel并没有在文档中提到svsim。并且网络上使用svsim的例子非常少,因此我调研并整理了相关执行过程,如下: 项目地址: chisel/svsim at main · chipsalliance/chisel commit id:31d6768f806deaf5071ef60dd08b697db...
ASSERTION_TEST:assert(condition)else$error("check failed"); 而对于时序逻辑的assertion,形式如下: ASSERTION_TEST:assertproperty(@(posedge clk) disable iff (rst)condition )else$error("check failed"); 或 propertyASSERTION_TEST:@(posedge clk) disable iff (rst)condition ) endproperty ASSERTION_ACTION:...
`ifdef (A && B) // code for AND condition `endif `ifdef (A || B) // code for OR condition `endif Multi-line strings are supported using a triple quote syntax: string x = “”” This is one continuous string. Single ‘ and double “ can be placed throughout, and only a triple...
`define WIDTH 8 to avoid redefincation `ifdef can be used, `ifdef WIDTH // do nothing (better to use `ifndef) `else `define WIDTH 8 `endif `ifndef WIDTH `define WIDTH 8 `endif `ifdef can be used as if..else `ifdef TYPE_1 `define WIDTH 8 `else `define WIDTH 32 `endif //`ifde...
`ifdef XYZ_ASSERTION_ON property XYZ (@posedge awa_clk); a ##2 b; endproperty XYZ_p : assert property (XYZ) else $fatal (“ERROR : Failed message) `endif SVA proved to be a powerful assertion language; it provides several ways to control assertion. There are various reasons why a...
整数、实数、assign(有限制)、deassign(有限制)、repeat语法(重复值必须是常数)、for语法(范围必须是静态的)、disable(不能用于for循环和repeat循环)、module定义、defparam、实例数组、`default_nettype、`define、`ifdef、`ifndef、`elsif、`include、`file、`line、$fclose、$fgets、$fopen、$fscanf、$readmemb、$re...