\u5173\u952e\u8bcd\uff1a\u987a\u5e8f\u5757\uff0c\u5e76\u884c\u5757\uff0c\u5d4c\u5957\u5757\uff0c\u547d\u540d\u5757\uff0cdisable<\/strong><\/div>\n
Verilog \u8bed\u53e5\u5757\u63d0\u4f9b\u4e86\u5c06\u4e24\u6761\u6216\u66f4\u591a\u6761\u8bed\u53e5\u7ec4\u6210\u8bed\u6cd5\u7ed3\u6784\u4e0a\u76f8\u5f53\u4e8e\u4e00\u6761\u4e00\u53e5\u7684\u673a\u5236\u3002\u4e3b\u8981\u5305\u62ec\u4e24\u79cd\u7c7b\u578b\uff1a\u987a\u5e8f\u5757\u548c\u5e76\u884c\u5757\u3002<\/p>\n
\u987a\u5e8f\u5757<\/strong><\/div>\n
\u987a\u5e8f\u5757\u7528\u5173\u952e\u5b57 begin \u548c end \u6765\u8868\u793a\u3002<\/p>\n
\u987a\u5e8f\u5757\u4e2d\u7684\u8bed\u53e5\u662f\u4e00\u6761\u6761\u6267\u884c\u7684\u3002\u5f53\u7136\uff0c\u975e\u963b\u585e\u8d4b\u503c\u9664\u5916\u3002<\/p>\n
\u987a\u5e8f\u5757\u4e2d\u6bcf\u6761\u8bed\u53e5\u7684\u65f6\u5ef6\u603b\u662f\u4e0e\u5176\u524d\u9762\u8bed\u53e5\u6267\u884c\u7684\u65f6\u95f4\u76f8\u5173\u3002<\/p>\n
\u5728\u672c\u8282\u4e4b\u524d\u7684\u4eff\u771f\u4e2d\uff0cinitial \u5757\u4e2d\u7684\u963b\u585e\u8d4b\u503c\uff0c\u90fd\u662f\u987a\u5e8f\u5757\u7684\u5b9e\u4f8b\u3002<\/p>\n
\u5e76\u884c\u5757<\/strong><\/div>\n
\u5e76\u884c\u5757\u6709\u5173\u952e\u5b57 fork \u548c join \u6765\u8868\u793a\u3002<\/p>\n
\u5e76\u884c\u5757\u4e2d\u7684\u8bed\u53e5\u662f\u5e76\u884c\u6267\u884c\u7684\uff0c\u5373\u4fbf\u662f\u963b\u585e\u5f62\u5f0f\u7684\u8d4b\u503c\u3002<\/p>\n
\u5e76\u884c\u5757\u4e2d\u6bcf\u6761\u8bed\u53e5\u7684\u65f6\u5ef6\u90fd\u662f\u4e0e\u5757\u8bed\u53e5\u5f00\u59cb\u6267\u884c\u7684\u65f6\u95f4\u76f8\u5173\u3002<\/p>\n
\u987a\u5e8f\u5757\u4e0e\u5e76\u884c\u5757\u7684\u533a\u522b\u663e\u800c\u6613\u89c1\uff0c\u4e0b\u9762\u7528\u4eff\u771f\u8bf4\u660e\u3002<\/p>\n
\u4eff\u771f\u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u5b9e\u4f8b<\/strong><\/p>\n
`timescale 1ns\/1ns\r\n \r\nmodule test ;\r\n reg [3:0] ai_sequen, bi_sequen ;\r\n reg [3:0] ai_paral, bi_paral ;\r\n reg [3:0] ai_nonblk, bi_nonblk ;\r\n \r\n \/\/============================================================\/\/\r\n \/\/(1)Sequence block\r\n initial begin\r\n #5 ai_sequen = 4'd5 ; \/\/at 5ns\r\n #5 bi_sequen = 4'd8 ; \/\/at 10ns\r\n end\r\n \/\/(2)fork block\r\n initial fork\r\n #5 ai_paral = 4'd5 ; \/\/at 5ns\r\n #5 bi_paral = 4'd8 ; \/\/at 5ns\r\n join\r\n \/\/(3)non-block block\r\n initial fork\r\n #5 ai_nonblk <= 4'd5 ; \/\/at 5ns\r\n #5 bi_nonblk <= 4'd8 ; \/\/at 5ns\r\n join\r\n \r\nendmodule<\/pre>\n
\u4eff\u771f\u7ed3\u679c\u5982\u4e0b:<\/p>\n
\u5982\u56fe\u6240\u793a\uff0c\u987a\u5e8f\u5757\u987a\u5e8f\u6267\u884c\uff0c\u7b2c 10ns \u65f6\uff0c\u4fe1\u53f7 bi_sequen \u624d\u8d4b\u503c\u4e3a 8\u3002
\n\u800c\u5e76\u884c\u5757\uff0cai_paral \u4e0e bi_paral \u7684\u8d4b\u503c\u662f\u540c\u65f6\u6267\u884c\u7684\uff0c\u6240\u4ee5\u5747\u5728 5ns \u65f6\u88ab\u8d4b\u503c\u3002<\/p>\n
\u800c\u975e\u963b\u585e\u8d4b\u503c\uff0c\u4e5f\u80fd\u8fbe\u5230\u548c\u5e76\u884c\u5757\u540c\u7b49\u7684\u8d4b\u503c\u6548\u679c\u3002
\n $\"\"$ <\/p>\n
\u5d4c\u5957\u5757<\/strong><\/div>\n
\u987a\u5e8f\u5757\u548c\u5e76\u884c\u5757\u8fd8\u53ef\u4ee5\u5d4c\u5957\u4f7f\u7528\u3002<\/p>\n
\u4eff\u771f\u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u5b9e\u4f8b\r\n`timescale 1ns\/1ns\r\n \r\nmodule test ;\r\n \r\n reg [3:0] ai_sequen2, bi_sequen2 ;\r\n reg [3:0] ai_paral2, bi_paral2 ;\r\n initial begin\r\n ai_sequen2 = 4'd5 ; \/\/at 0ns\r\n fork\r\n #10 ai_paral2 = 4'd5 ; \/\/at 10ns\r\n #15 bi_paral2 = 4'd8 ; \/\/at 15ns\r\n join\r\n #20 bi_sequen2 = 4'd8 ; \/\/at 35ns\r\n end\r\n \r\nendmodule<\/pre>\n
\u4eff\u771f\u7ed3\u679c\u5982\u4e0b:<\/p>\n
\u5e76\u884c\u5757\u8bed\u53e5\u5757\u5185\u662f\u5e76\u884c\u6267\u884c\uff0c\u6240\u4ee5\u4fe1\u53f7 ai_paral2 \u548c\u4fe1\u53f7 bi_paral2 \u5206\u522b\u5728 10ns, 15ns \u65f6\u88ab\u8d4b\u503c\u3002\u800c\u5e76\u884c\u5757\u4e2d\u6700\u957f\u7684\u6267\u884c\u65f6\u95f4\u4e3a 15ns\uff0c\u6240\u4ee5\u987a\u5e8f\u5757\u4e2d\u7684\u4fe1\u53f7 bi_sequen2 \u5728 35ns \u65f6\u88ab\u8d4b\u503c\u3002
\n $\"\"$ <\/p>\n
\u547d\u540d\u5757<\/strong><\/div>\n
\u6211\u4eec\u53ef\u4ee5\u7ed9\u5757\u8bed\u53e5\u7ed3\u6784\u547d\u540d\u3002<\/p>\n
\u547d\u540d\u7684\u5757\u4e2d\u53ef\u4ee5\u58f0\u660e\u5c40\u90e8\u53d8\u91cf\uff0c\u901a\u8fc7\u5c42\u6b21\u540d\u5f15\u7528\u7684\u65b9\u6cd5\u5bf9\u53d8\u91cf\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n
\u4eff\u771f\u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u5b9e\u4f8b<\/strong><\/p>\n
`timescale 1ns\/1ns\r\n \r\nmodule test;\r\n \r\n initial begin: runoob \/\/\u547d\u540d\u6a21\u5757\u540d\u5b57\u4e3arunoob\uff0c\u5206\u53f7\u4e0d\u80fd\u5c11\r\n integer i ; \/\/\u6b64\u53d8\u91cf\u53ef\u4ee5\u901a\u8fc7test.runoob.i \u88ab\u5176\u4ed6\u6a21\u5757\u4f7f\u7528\r\n i = 0 ;\r\n forever begin\r\n #10 i = i + 10 ; \r\n end\r\n end\r\n \r\n reg stop_flag ;\r\n initial stop_flag = 1'b0 ;\r\n always begin : detect_stop\r\n if ( test.runoob.i == 100) begin \/\/i\u7d2f\u52a010\u6b21\uff0c\u5373100ns\u65f6\u505c\u6b62\u4eff\u771f\r\n $display(\"Now you can stop the simulation!!!\");\r\n stop_flag = 1'b1 ;\r\n end\r\n #10 ;\r\n end\r\n \r\nendmodule<\/pre>\n
\u4eff\u771f\u7ed3\u679c\u5982\u4e0b:
\n $\"\"$
\n\u547d\u540d\u7684\u5757\u4e5f\u53ef\u4ee5\u88ab\u7981\u7528\uff0c\u7528\u5173\u952e\u5b57 disable \u6765\u8868\u793a\u3002<\/p>\n
disable \u53ef\u4ee5\u7ec8\u6b62\u547d\u540d\u5757\u7684\u6267\u884c\uff0c\u53ef\u4ee5\u7528\u6765\u4ece\u5faa\u73af\u4e2d\u9000\u51fa\u3001\u5904\u7406\u9519\u8bef\u7b49\u3002<\/p>\n
\u4e0e C \u8bed\u8a00\u4e2d break \u7c7b\u4f3c\uff0c\u4f46\u662f break \u53ea\u80fd\u9000\u51fa\u5f53\u524d\u6240\u5728\u5faa\u73af\uff0c\u800c disable \u53ef\u4ee5\u7981\u7528\u8bbe\u8ba1\u4e2d\u4efb\u4f55\u4e00\u4e2a\u547d\u540d\u7684\u5757\u3002<\/p>\n
\u4eff\u771f\u4ee3\u7801\u5982\u4e0b:<\/p>\n
\u5b9e\u4f8b<\/strong><\/p>\n
`timescale 1ns\/1ns\r\n \r\nmodule test;\r\n \r\n initial begin: runoob_d \/\/\u547d\u540d\u6a21\u5757\u540d\u5b57\u4e3arunoob_d\r\n integer i_d ;\r\n i_d = 0 ;\r\n while(i_d<=100) begin: runoob_d2\r\n # 10 ;\r\n if (i_d >= 50) begin \/\/\u7d2f\u52a05\u6b21\u505c\u6b62\u7d2f\u52a0\r\n disable runoob_d3.clk_gen ;\/\/stop \u5916\u90e8block: clk_gen\r\n disable runoob_d2 ; \/\/stop \u5f53\u524dblock: runoob_d2\r\n end\r\n i_d = i_d + 10 ;\r\n end\r\n end\r\n \r\n reg clk ;\r\n initial begin: runoob_d3\r\n while (1) begin: clk_gen \/\/\u65f6\u949f\u4ea7\u751f\u6a21\u5757\r\n clk=1 ; #10 ;\r\n clk=0 ; #10 ;\r\n end\r\n end\r\n \r\nendmodule<\/pre>\n
\u4eff\u771f\u7ed3\u679c\u5982\u4e0b:<\/p>\n
\u7531\u56fe\u53ef\u77e5\uff0c\u4fe1\u53f7 i_d \u7d2f\u52a0\u5230 50 \u4ee5\u540e\uff0c\u4fbf\u4e0d\u518d\u7d2f\u52a0\uff0c\u4ee5\u540e clk \u65f6\u949f\u4e5f\u4e0d\u518d\u4ea7\u751f\u3002<\/p>\n
\u53ef\u89c1\uff0cdisable \u9000\u51fa\u4e86\u5f53\u524d\u7684 while \u5757\u3002
\n $\"\"$
\n\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0cdisable \u5728 always \u6216 forever \u5757\u4e2d\u4f7f\u7528\u65f6\u53ea\u80fd\u9000\u51fa\u5f53\u524d\u56de\u5408\uff0c\u4e0b\u4e00\u6b21\u8bed\u53e5\u8fd8\u662f\u4f1a\u5728 always \u6216 forever \u4e2d\u6267\u884c\u3002\u56e0\u4e3a always \u5757\u548c forever \u5757\u662f\u4e00\u76f4\u6267\u884c\u7684\uff0c\u6b64\u65f6\u7684 disable \u6709\u70b9\u7c7b\u4f3c C \u8bed\u8a00\u4e2d\u7684 continue \u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Verilog \u8bed\u53e5\u5757\u63d0\u4f9b\u4e86\u5c06\u4e24\u6761\u6216\u66f4\u591a\u6761\u8bed\u53e5\u7ec4\u6210\u8bed\u6cd5\u7ed3\u6784\u4e0a\u76f8\u5f53\u4e8e\u4e00\u6761\u4e00\u53e5\u7684\u673a\u5236\u3002\u4e3b\u8981\u5305\u62ec\u4e24\u79cd\u7c7b\u578b\uff1a\u987a\u5e8f\u5757\u548c\u5e76 […]<\/p>\n","protected":false},"author":1481,"featured_media":203804,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-203799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/203799","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/1481"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=203799"}],"version-history":[{"count":2,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/203799\/revisions"}],"predecessor-version":[{"id":203806,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/203799\/revisions\/203806"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/203804"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=203799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=203799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=203799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}