edastudy:vcs:vcs使用
差别
这里会显示出您选择的修订版和当前版本之间的差别。
| 两侧同时换到之前的修订记录前一修订版后一修订版 | 前一修订版 | ||
| edastudy:vcs:vcs使用 [2024/07/24 15:25] – [6. kdb] user01 | edastudy:vcs:vcs使用 [2025/01/23 09:13] (当前版本) – [1. ucli] user01 | ||
|---|---|---|---|
| 行 19: | 行 19: | ||
| force a 1 | force a 1 | ||
| run 10ns | run 10ns | ||
| - | force a 0 | + | force top.b 0 |
| run 10ns | run 10ns | ||
| + | force b\[0\] 1; # force b[0]为1， 需要加\ | ||
| } | } | ||
| </ | </ | ||
| 行 26: | 行 27: | ||
| force 命令注意，只能force信号为具体的值，不能force一个信号到另外一个信号\\ | force 命令注意，只能force信号为具体的值，不能force一个信号到另外一个信号\\ | ||
| - | force到的具体值需要给完整的宽度，比如8' | + | force到的具体值需要给完整的宽度，比如8' |
| + | force 信号最好给完整的信号hier名，尤其是有的仿真设置了多个-top | ||
| 行 97: | 行 99: | ||
| ===== - rand seed ===== | ===== - rand seed ===== | ||
| + | |||
| + | <code verilog> | ||
| + | |||
| + | reg | ||
| + | reg | ||
| + | initial begin | ||
| + | if ($value$plusargs(" | ||
| + | $display(" | ||
| + | ret = $urandom(seed); | ||
| + | |||
| + | repeat(2) begin | ||
| + | ret = $urandom(); | ||
| + | $display(" | ||
| + | end | ||
| + | $finish; | ||
| + | end | ||
| + | end | ||
| + | </ | ||
| + | |||
| + | <code bash> | ||
| + | ./simv +seed=21 | ||
| + | seed = 21 | ||
| + | ret = c7466bae | ||
| + | ret = cf3f2455 | ||
| + | |||
| + | |||
| + | ./simv +seed=22 | ||
| + | seed = 22 | ||
| + | ret = 4c85682 | ||
| + | ret = 2c3fd11a | ||
| + | |||
| + | |||
| + | </ | ||
| + | |||
| + | |||
| + | <code perl> | ||
| + | # perl gen seed | ||
| + | srand; | ||
| + | $rand_seed = int (rand(100000)); | ||
| + | </ | ||
edastudy/vcs/vcs使用.1721805926.txt.gz · 最后更改: 2024/07/24 15:25 由 user01