class dadd_driver extends uvm_driver #(dadd_item);
\n `uvm_component_utils(dadd_driver) \/\/ \u6ce8\u518c component \u5230\u5de5\u5382
\n \/\/ … \u7c7b\u5b9a\u4e49 …
\nendclass<\/p>\n
- \n
- \u5173\u952e：\n
- \n
- uvm_component_utils\u00a0\u662f\u6ce8\u518c\u00a0component（\u7ee7\u627f\u00a0uvm_component\u00a0\u7684\u7c7b，\u5982\u00a0driver\u3001monitor\u00a0）\u7684\u5b8f；\u82e5\u4e3a\u00a0object（\u7ee7\u627f\u00a0uvm_object\u00a0\u7684\u7c7b，\u5982\u00a0sequence_item\u00a0），\u5219\u7528\u00a0uvm_object_utils\u3002<\/li>\n
- \u6ce8\u518c\u540e，\u7c7b\u4f1a\u88ab\u52a0\u5165 UVM \u5de5\u5382\u7684 \u201c\u7c7b\u578b\u6620\u5c04\u8868\u201d，\u540e\u7eed\u53ef\u901a\u8fc7\u00a0type_id::create()\u00a0\u521b\u5efa\u5b9e\u4f8b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
（2）\u521b\u5efa（type_id::create）<\/p>\n
- \n
- \u4f5c\u7528：\u901a\u8fc7\u5de5\u5382\u521b\u5efa\u5bf9\u8c61，\u81ea\u52a8\u68c0\u67e5\u662f\u5426\u6709 \u201c\u7c7b\u578b\u8986\u76d6\u201d，\u518d\u51b3\u5b9a\u5b9e\u4f8b\u5316\u539f\u7c7b\u8fd8\u662f\u66ff\u6362\u7c7b\u3002<\/li>\n
- \u4ee3\u7801\u793a\u4f8b（dadd_iagent\u00a0\u4e2d\u521b\u5efa\u00a0dadd_driver\u00a0）：<\/li>\n<\/ul>\n
function dadd_iagent::new(string name = "dadd_iagent", uvm_component parent);
\n super.new(name, parent);
\n \/\/ \u901a\u8fc7\u5de5\u5382\u521b\u5efa driver，\u800c\u975e\u76f4\u63a5 new(dadd_driver::new(…))
\n drv = dadd_driver::type_id::create("drv", this);
\n \/\/ … \u5176\u4ed6\u7ec4\u4ef6\u521b\u5efa …
\nendfunction<\/p>\n- \n
- \u5173\u952e：\n
- \n
- type_id::create("drv", this)\u00a0\u4f1a\u5148\u67e5\u5de5\u5382\u662f\u5426\u6709\u00a0dadd_driver\u00a0\u7684\u8986\u76d6\u7c7b\u578b（\u5982\u00a0dadd_fixen_driver\u00a0），\u82e5\u6709\u5219\u521b\u5efa\u8986\u76d6\u7c7b，\u5426\u5219\u521b\u5efa\u539f\u7c7b\u3002<\/li>\n
- \u66ff\u6362\u00a0new()\u00a0\u4e3a\u00a0create()\u00a0\u662f\u5b9e\u73b0 \u201c\u52a8\u6001\u8986\u76d6\u201d \u7684\u6838\u5fc3：\u540e\u7eed\u53ea\u9700\u8c03\u7528\u00a0set_type_override，\u65e0\u9700\u4fee\u6539\u00a0dadd_iagent\u00a0\u4ee3\u7801，\u5c31\u80fd\u66ff\u6362\u00a0driver\u00a0\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
（3）\u8986\u76d6（set_type_override）<\/p>\n
- \n
- \u4f5c\u7528：\u544a\u8bc9\u5de5\u5382 \u201c\u7528\u7c7b B \u66ff\u6362\u7c7b A \u7684\u521b\u5efa\u201d，\u5b9e\u9a8c\u4e2d\u628a\u00a0dadd_driver\u00a0\u6362\u6210\u00a0dadd_fixen_driver，\u56fa\u5b9a\u00a0data_en=1\u3002<\/li>\n
- \u4ee3\u7801\u793a\u4f8b（\u5728\u00a0dadd_rand_test\u00a0\u4e2d\u8986\u76d6 ）：<\/li>\n<\/ul>\n
class dadd_rand_test extends uvm_test;
\n `uvm_component_utils(dadd_rand_test)
\n function void build_phase(uvm_phase phase);
\n \/\/ \u5168\u5c40\u8986\u76d6：\u6240\u6709 dadd_driver \u7c7b\u578b\u90fd\u66ff\u6362\u4e3a dadd_fixen_driver
\n dadd_driver::type_id::set_type_override(dadd_fixen_driver::get_type());
\n super.build_phase(phase);
\n endfunction
\nendclass<\/p>\n- \n
- \u5173\u952e：\n
- \n
- set_type_override\u00a0\u9700\u5728\u00a0build_phase\u00a0\u8c03\u7528，\u786e\u4fdd\u5de5\u5382\u5728\u521b\u5efa\u7ec4\u4ef6\u524d\u751f\u6548\u3002<\/li>\n
- \u66ff\u6362\u540e，dadd_iagent\u00a0\u4e2d\u00a0drv = dadd_driver::type_id::create(…)\u00a0\u4f1a\u81ea\u52a8\u521b\u5efa\u00a0dadd_fixen_driver\u00a0\u5b9e\u4f8b，\u5b9e\u73b0 \u201c\u65e0\u4ee3\u7801\u4fee\u6539\u66ff\u6362\u7ec4\u4ef6\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
3. \u5b9e\u9a8c\u76ee\u6807：\u7528\u00a0dadd_fixen_driver\u00a0\u56fa\u5b9a\u00a0data_en=1<\/h4>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u539f\u00a0dadd_driver\u00a0\u4e2d\u00a0data_en\u00a0\u662f\u968f\u673a\u7684，\u5b9e\u9a8c\u901a\u8fc7\u00a0\u201c\u5de5\u5382\u8986\u76d6\u201d\u00a0\u66ff\u6362\u4e3a\u00a0dadd_fixen_driver，\u5f3a\u5236\u00a0data_en=1：<\/p>\n
（1）dadd_fixen_driver\u00a0\u903b\u8f91<\/p>\n
task dadd_fixen_driver::main_phase(uvm_phase phase);
\n wait(tb_dadd.dadd_if.reset_n);
\n forever begin
\n seq_item_port.get_next_item(req);
\n @(posedge tb_dadd.dadd_if.clk);
\n \/\/ \u56fa\u5b9a data_en=1（\u4e0e\u539f driver \u7684\u968f\u673a\u903b\u8f91\u533a\u5206）
\n tb_dadd.dadd_if.mcb.dadd_in_en <= 1'b1;
\n tb_dadd.dadd_if.mcb.dadd_in <= req.data;
\n tb_dadd.dadd_if.mcb.dadd_in_addr<= req.addr;
\n seq_item_port.item_done();
\n end
\nendtask<\/p>\n- \n
- \u5173\u952e：dadd_in_en <= 1'b1\u00a0\u786c\u7f16\u7801\u4e3a 1，\u8986\u76d6\u539f\u00a0driver\u00a0\u7684\u968f\u673a\u884c\u4e3a\u3002<\/li>\n<\/ul>\n
（2）\u8986\u76d6\u6d41\u7a0b<\/span><\/p>\n
- \n
- \u5728\u00a0<\/span>dadd_rand_test<\/span>\u00a0\u7684\u00a0<\/span>build_phase<\/span>\u00a0\u8c03\u7528\u00a0<\/span>set_type_override<\/span>，\u66ff\u6362\u00a0<\/span>dadd_driver<\/span>\u00a0\u4e3a\u00a0<\/span>dadd_fixen_driver<\/span>\u3002<\/span><\/li>\n
- dadd_iagent<\/span>\u00a0\u4e2d\u901a\u8fc7\u00a0<\/span>dadd_driver::type_id::create()<\/span>\u00a0\u521b\u5efa\u00a0<\/span>driver<\/span>\u00a0\u65f6，\u5de5\u5382\u81ea\u52a8\u5b9e\u4f8b\u5316\u00a0<\/span>dadd_fixen_driver<\/span>\u3002<\/span><\/li>\n
- \u4eff\u771f\u65f6，<\/span>driver<\/span>\u00a0\u9a71\u52a8 DUT \u7684\u00a0<\/span>data_en<\/span>\u00a0\u6052\u4e3a 1，\u5b9e\u73b0\u5b9e\u9a8c\u76ee\u6807\u3002<\/span><\/li>\n<\/ul>\n
4. \u5de5\u5382\u673a\u5236\u7684\u4ef7\u503c：\u201c\u7075\u6d3b\u9a8c\u8bc1\u7684\u57fa\u77f3\u201d<\/h4>\n
（1）\u89e3\u8026\u4e0e\u590d\u7528：\u7ec4\u4ef6\u521b\u5efa\u903b\u8f91\u4e0e\u4f7f\u7528\u903b\u8f91\u5206\u79bb，dadd_iagent\u00a0\u65e0\u9700\u5173\u5fc3\u00a0driver\u00a0\u5177\u4f53\u7c7b\u578b，\u53ea\u9700\u901a\u8fc7\u5de5\u5382\u521b\u5efa，\u590d\u7528\u6027\u66f4\u9ad8\u3002<\/p>\n
（2）\u52a8\u6001\u914d\u7f6e：\u901a\u8fc7\u4e00\u884c\u00a0set_type_override，\u5c31\u80fd\u5207\u6362\u00a0driver\u00a0\u884c\u4e3a（\u968f\u673a \/ \u56fa\u5b9a\u00a0data_en\u00a0），\u65e0\u9700\u4fee\u6539\u00a0agent\u3001env\u00a0\u4ee3\u7801\u3002<\/p>\n
（3）\u53ef\u7ef4\u62a4\u6027：\u9a8c\u8bc1\u9700\u6c42\u53d8\u5316\u65f6（\u5982\u66ff\u6362\u00a0driver\u00a0\u534f\u8bae），\u53ea\u9700\u4fee\u6539\u00a0driver\u00a0\u5b50\u7c7b\u548c\u8986\u76d6\u903b\u8f91，\u4e0d\u5f71\u54cd\u4e0a\u5c42\u7ec4\u4ef6\u3002<\/p>\n
5. \u5e38\u89c1\u95ee\u9898\u4e0e\u8c03\u8bd5<\/h4>\n
（1）\u8986\u76d6\u4e0d\u751f\u6548：<\/p>\n
- \n
- \u68c0\u67e5\u00a0set_type_override\u00a0\u662f\u5426\u5728\u00a0build_phase\u00a0\u8c03\u7528（main_phase\u00a0\u8c03\u7528\u65e0\u6548，\u56e0\u7ec4\u4ef6\u5df2\u521b\u5efa ）\u3002<\/li>\n
- \u68c0\u67e5\u00a0create()\u00a0\u662f\u5426\u7528\u00a0type_id::create，\u800c\u975e\u76f4\u63a5\u00a0new()（\u76f4\u63a5\u00a0new()\u00a0\u4f1a\u7ed5\u8fc7\u5de5\u5382，\u8986\u76d6\u5931\u6548 ）\u3002<\/li>\n<\/ul>\n
（2）\u7c7b\u578b\u6ce8\u518c\u9057\u6f0f：<\/p>\n
- \n
- \u82e5\u5b50\u7c7b（\u5982\u00a0dadd_fixen_driver\u00a0）\u672a\u6ce8\u518c（\u5fd8\u8bb0\u00a0uvm_component_utils\u00a0\u5b8f ），\u5de5\u5382\u65e0\u6cd5\u8bc6\u522b，\u8986\u76d6\u4f1a\u5931\u8d25\u3002<\/li>\n<\/ul>\n
（3）\u5c42\u6b21\u5316\u8986\u76d6：<\/p>\n
- \n
- \u82e5\u9700\u53ea\u66ff\u6362\u67d0\u4e2a\u00a0agent\u00a0\u4e2d\u7684\u00a0driver（\u800c\u975e\u5168\u5c40\u66ff\u6362 ），\u53ef\u7528\u00a0set_inst_override，\u6307\u5b9a\u5b9e\u4f8b\u8def\u5f84（\u5982\u00a0uvm_test_top.env.iagt.drv\u00a0）\u3002<\/li>\n<\/ul>\n
6. \u603b\u7ed3<\/h4>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0UVM \u5de5\u5382\u673a\u5236\u901a\u8fc7\u00a0\u201c\u6ce8\u518c – \u521b\u5efa – \u8986\u76d6\u201d\u00a0\u4e09\u6b65，\u5b9e\u73b0\u4e86：<\/p>\n
- \n
- \u52a8\u6001\u66ff\u6362\u7ec4\u4ef6：\u5b9e\u9a8c\u4e2d\u7528\u00a0dadd_fixen_driver\u00a0\u66ff\u6362\u00a0dadd_driver，\u65e0\u9700\u4fee\u6539\u00a0agent\u00a0\u4ee3\u7801\u3002<\/li>\n
- \u89e3\u8026\u521b\u5efa\u903b\u8f91：\u7ec4\u4ef6\u521b\u5efa\u7531\u5de5\u5382\u7edf\u4e00\u7ba1\u63a7，\u4e0a\u5c42\u7ec4\u4ef6\u53ea\u9700\u5173\u6ce8\u63a5\u53e3，\u65e0\u9700\u5173\u5fc3\u5177\u4f53\u5b9e\u73b0\u3002<\/li>\n
- \u7075\u6d3b\u9a8c\u8bc1\u914d\u7f6e：\u4e00\u884c\u4ee3\u7801\u5207\u6362\u9a8c\u8bc1\u884c\u4e3a（\u968f\u673a \/ \u56fa\u5b9a\u00a0data_en\u00a0），\u8ba9\u9a8c\u8bc1\u5e73\u53f0\u53ef\u9002\u914d\u4e0d\u540c\u573a\u666f\u3002<\/li>\n<\/ul>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u662f UVM \u5b9e\u73b0 \u201c\u53ef\u590d\u7528\u3001\u53ef\u914d\u7f6e\u9a8c\u8bc1\u5e73\u53f0\u201d \u7684\u6838\u5fc3\u673a\u5236，\u638c\u63e1\u540e\u80fd\u5927\u5e45\u63d0\u5347\u9a8c\u8bc1\u73af\u5883\u7684\u6269\u5c55\u6027\u4e0e\u7ef4\u62a4\u6027\u3002<\/p>\n
（\u4e8c）Phase\u9636\u6bb5\u8fd0\u884c\u673a\u5236<\/h3>\n
1. \u6838\u5fc3\u89c4\u5219：\u201c\u4e09\u7c7b phase \u6267\u884c\u987a\u5e8f\u201d<\/h4>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0UVM phase \u6267\u884c\u987a\u5e8f\u5206\u4e3a\u00a0\u201c\u7ec4\u4ef6\u5185\u987a\u5e8f\u201d\u3001\u201c\u6811\u5f62\u7ed3\u6784\u987a\u5e8f\u201d\u3001\u201c\u540c\u7ea7\u7ec4\u4ef6\u987a\u5e8f\u201d\u00a0\u4e09\u7c7b，\u9700\u7ed3\u5408\u5b9e\u9a8c\u573a\u666f\u7406\u89e3：<\/p>\n
（1）\u540c\u4e00\u7ec4\u4ef6\u5185\u7684 phase \u987a\u5e8f（\u7eb5\u5411\u987a\u5e8f）<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815074015-689ee45fec8a6.png\")
<\/p>\n- \n
- \u89c4\u5219：\u540c\u4e00\u7ec4\u4ef6（\u5982\u00a0dadd_iagent\u00a0）\u5185，phase \u6309\u00a0\u201c\u529f\u80fd\u9636\u6bb5\u201d\u00a0\u987a\u5e8f\u6267\u884c，\u4ece\u00a0build_phase\u00a0\u5f00\u59cb，\u5230\u00a0final_phase\u00a0\u7ed3\u675f，\u6d41\u7a0b\u4e3a：<\/li>\n<\/ul>\n
build_phase \u2192 connect_phase \u2192 end_of_elaboration_phase \u2192 start_of_simulation_phase \u2192
\nreset_phase \u2192 configure_phase \u2192 run_phase \u2192 main_phase \u2192 shutdown_phase \u2192
\nextract_phase \u2192 check_phase \u2192 report_phase \u2192 final_phase<\/p>\n- \n
- \u5b9e\u9a8c\u6620\u5c04：\u82e5\u5728\u00a0dadd_driver\u00a0\u7684\u6240\u6709 phase \u4e2d\u52a0\u5165\u6253\u5370，\u4f1a\u770b\u5230\u8be5\u7ec4\u4ef6\u5185 phase \u4e25\u683c\u6309\u4e0a\u8ff0\u987a\u5e8f\u6267\u884c\u3002<\/li>\n<\/ul>\n
（2） \u6811\u5f62\u7ed3\u6784\u4e2d\u7684 phase \u987a\u5e8f（\u6a2a\u5411\u8de8\u7ec4\u4ef6）<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815074025-689ee4692f948.png\")
<\/p>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0UVM \u7ec4\u4ef6\u6784\u6210\u00a0\u6811\u5f62\u5c42\u6b21\u7ed3\u6784（uvm_test_top \u2192 env \u2192 agent \u2192 driver\/monitor\u00a0），\u540c\u4e00\u7c7b\u578b phase \u5728\u6811\u5f62\u7ed3\u6784\u4e2d\u7684\u6267\u884c\u987a\u5e8f\u5206\u4e24\u79cd：<\/p>\n
\n
phase \u7c7b\u578b\u6267\u884c\u65b9\u5411\u5178\u578b phase \u4e3e\u4f8b\u5b9e\u9a8c\u6d41\u7a0b\u6620\u5c04（\u4ee5\u00a0build_phase\u00a0\u548c\u00a0connect_phase\u00a0\u4e3a\u4f8b）<\/tr>\n \n\n \u81ea\u4e0a\u800c\u4e0b（Top-Down）<\/td>\n \u4ece\u6839\u5230\u53f6\u5b50<\/td>\n build_phase\u3001final_phase<\/td>\n uvm_test_top.build_phase\u00a0\u2192\u00a0env.build_phase\u00a0\u2192\u00a0agent.build_phase\u00a0\u2192\u00a0driver.build_phase<\/td>\n<\/tr>\n \n \u81ea\u4e0b\u800c\u4e0a（Bottom-Up）<\/td>\n \u4ece\u53f6\u5b50\u5230\u6839<\/td>\n connect_phase\u3001report_phase\u00a0\u7b49<\/td>\n driver.connect_phase\u00a0\u2192\u00a0agent.connect_phase\u00a0\u2192\u00a0env.connect_phase\u00a0\u2192\u00a0uvm_test_top.connect_phase<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n （3）\u540c\u7ea7\u7ec4\u4ef6\u7684 phase \u987a\u5e8f（\u6a2a\u5411\u540c\u5c42）<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815074033-689ee471e9c8f.png\")
<\/p>\n- \n
- \u89c4\u5219：\u540c\u4e00\u7236\u7ec4\u4ef6\u4e0b\u7684\u00a0\u540c\u7ea7\u7ec4\u4ef6（\u5982\u00a0agent\u00a0\u5185\u7684\u00a0driver\u3001monitor\u3001sequencer\u00a0），\u540c\u4e00 phase \u7684\u6267\u884c\u987a\u5e8f\u6309\u00a0\u201c\u5b9e\u4f8b\u5316\u540d\u79f0\u7684\u5b57\u5178\u5e8f\u201d\u00a0\u6267\u884c\u3002<\/li>\n
- \u5b9e\u9a8c\u6620\u5c04：\u82e5\u00a0agent\u00a0\u4e2d\u00a0driver\u00a0\u547d\u540d\u4e3a\u00a0drv\u3001monitor\u00a0\u547d\u540d\u4e3a\u00a0imon\u3001sequencer\u00a0\u547d\u540d\u4e3a\u00a0sqr，\u5219\u00a0build_phase\u00a0\u6267\u884c\u987a\u5e8f\u4e3a：<\/li>\n<\/ul>\n
drv.build_phase \u2192 imon.build_phase \u2192 sqr.build_phase <\/p>\n
（\u56e0\u5b57\u5178\u5e8f\u00a0drv\u00a0<\u00a0imon\u00a0<\u00a0sqr\u00a0，\u6309\u5b57\u6bcd\u987a\u5e8f\u6392\u5217 ）<\/p>\n
2. \u5b9e\u9a8c\u9a8c\u8bc1：\u4ee3\u7801\u4e0e\u65e5\u5fd7\u7684\u6620\u5c04<\/h4>\n
（1）\u4ee3\u7801\u4e2d\u52a0\u5165 phase \u6253\u5370（\u4ee5\u00a0dadd_driver\u00a0\u4e3a\u4f8b）<\/p>\n
class dadd_driver extends uvm_driver #(dadd_item);
\n `uvm_component_utils(dadd_driver)
\n function new(string name="dadd_driver", uvm_component parent);
\n super.new(name, parent);
\n endfunction<\/p>\ntask build_phase(uvm_phase phase);
\n `uvm_info("DRV", "build_phase executed", UVM_LOW)
\n super.build_phase(phase);
\n endtask<\/p>\ntask connect_phase(uvm_phase phase);
\n `uvm_info("DRV", "connect_phase executed", UVM_LOW)
\n super.connect_phase(phase);
\n endtask
\n \/\/ … \u5176\u4ed6 phase \u540c\u7406\u52a0\u5165\u6253\u5370 …
\nendclass<\/p>\n（2）\u65e5\u5fd7\u5206\u6790（\u4ee5\u00a0build_phase\u00a0\u548c\u00a0connect_phase\u00a0\u4e3a\u4f8b）<\/p>\n
build_phase\u00a0\u65e5\u5fd7（\u81ea\u4e0a\u800c\u4e0b）：<\/p>\n
UVM_INFO dadd_driver.sv(10) @ 0: uvm_test_top.env.iagt.drv [DRV] build_phase executed
\nUVM_INFO dadd_imonitor.sv(10) @ 0: uvm_test_top.env.iagt.imon [MON] build_phase executed
\nUVM_INFO dadd_sequencer.sv(10) @ 0: uvm_test_top.env.iagt.sqr [SQR] build_phase executed
\nUVM_INFO dadd_oagent.sv(10) @ 0: uvm_test_top.env.oagt [OAGT] build_phase executed<\/p>\n- \n
- \u903b\u8f91：\u5148\u6267\u884c\u00a0uvm_test_top\u00a0\u7684\u00a0build_phase（\u672a\u5b8c\u6574\u6253\u5370 ），\u518d\u6267\u884c\u00a0env\u00a0\u7684\u00a0build_phase，\u7136\u540e\u6309\u5b57\u5178\u5e8f\u6267\u884c\u00a0iagt\u00a0\u5185\u7684\u00a0drv\u2192imon\u2192sqr，\u6700\u540e\u6267\u884c\u00a0oagt（\u56e0\u00a0iagt\u00a0\u5b57\u5178\u5e8f\u5c0f\u4e8e\u00a0oagt\u00a0）\u3002<\/li>\n<\/ul>\n
connect_phase\u00a0\u65e5\u5fd7（\u81ea\u4e0b\u800c\u4e0a）：<\/p>\n
UVM_INFO dadd_driver.sv(15) @ 0: uvm_test_top.env.iagt.drv [DRV] connect_phase executed
\nUVM_INFO dadd_imonitor.sv(15) @ 0: uvm_test_top.env.iagt.imon [MON] connect_phase executed
\nUVM_INFO dadd_sequencer.sv(15) @ 0: uvm_test_top.env.iagt.sqr [SQR] connect_phase executed
\nUVM_INFO dadd_oagent.sv(15) @ 0: uvm_test_top.env.oagt [OAGT] connect_phase executed
\nUVM_INFO dadd_env.sv(15) @ 0: uvm_test_top.env [ENV] connect_phase executed
\nUVM_INFO dadd_test.sv(15) @ 0: uvm_test_top [TEST] connect_phase executed<\/p>\n- \n
- \u903b\u8f91：\u5148\u6267\u884c\u53f6\u5b50\u7ec4\u4ef6（drv\u2192imon\u2192sqr\u00a0），\u518d\u6267\u884c\u7236\u7ec4\u4ef6（oagt\u2192env\u2192uvm_test_top\u00a0），\u7b26\u5408 \u201c\u81ea\u4e0b\u800c\u4e0a\u201d \u89c4\u5219\u3002<\/li>\n<\/ul>\n
3. \u5173\u952e\u7ec6\u8282\u4e0e\u6613\u9519\u70b9<\/h4>\n
（1）\u00a0run_phase\u00a0\u4e0e\u00a0main_phase\u00a0\u7684\u5173\u7cfb<\/p>\n
- \n
- run_phase\u00a0\u662f\u00a0task phase\u00a0\u7684\u7236 phase，main_phase\u00a0\u662f\u00a0run_phase\u00a0\u7684\u5b50 phase（\u5c5e\u4e8e\u00a0task phase\u00a0\u7c7b\u522b ）\u3002<\/li>\n
- \u6267\u884c\u987a\u5e8f：run_phase\u00a0\u542f\u52a8\u540e，main_phase\u00a0\u4f1a\u81ea\u52a8\u6267\u884c，\u4e14\u9075\u5faa\u00a0\u81ea\u4e0b\u800c\u4e0a\u00a0\u89c4\u5219（\u5982\u5148\u00a0driver.main_phase，\u518d\u00a0agent.main_phase\u00a0\u7b49 ）\u3002<\/li>\n<\/ul>\n
（2）\u5b57\u5178\u5e8f\u7684\u5177\u4f53\u8868\u73b0<\/p>\n
- \n
- \u540c\u7ea7\u7ec4\u4ef6\u7684 phase \u6267\u884c\u987a\u5e8f，\u4e25\u683c\u6309\u00a0\u201cnew \u65f6\u7684\u540d\u79f0\u5b57\u7b26\u4e32\u6bd4\u8f83\u201d，\u5982：\n
- \n
- \u540d\u79f0\u4e3a\u00a0a_drv\u00a0\u548c\u00a0b_drv\u00a0\u2192\u00a0a_drv\u00a0\u5148\u6267\u884c（\u56e0\u00a0a\u00a0\u7684 ASCII \u7801\u5c0f\u4e8e\u00a0b\u00a0）\u3002<\/li>\n
- \u540d\u79f0\u4e3a\u00a0drv1\u00a0\u548c\u00a0drv2\u00a0\u2192\u00a0drv1\u00a0\u5148\u6267\u884c（\u6570\u5b57\u00a01\u00a0\u7684 ASCII \u7801\u5c0f\u4e8e\u00a02\u00a0）\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
（3）phase\u00a0\u963b\u585e\u4e0e objection \u673a\u5236<\/p>\n
- \n
- task phase（\u5982\u00a0main_phase\u3001run_phase\u00a0）\u9700\u8981\u901a\u8fc7\u00a0phase.raise_objection\u00a0\u548c\u00a0phase.drop_objection\u00a0\u63a7\u5236\u4eff\u771f\u8fdb\u5ea6，\u5426\u5219\u4eff\u771f\u4f1a\u76f4\u63a5\u7ed3\u675f\u3002<\/li>\n
- function phase（\u5982\u00a0build_phase\u3001connect_phase\u00a0）\u662f\u7eaf\u51fd\u6570，\u65e0\u9700 objection \u673a\u5236，\u6267\u884c\u5b8c\u7acb\u5373\u9000\u51fa\u3002<\/li>\n<\/ul>\n
4. \u5b9e\u9a8c\u4ef7\u503c\u4e0e\u5e94\u7528\u573a\u666f<\/h4>\n
（1）\u9a8c\u8bc1\u5e73\u53f0\u6784\u5efa<\/p>\n
- \n
- build_phase\u00a0\u81ea\u4e0a\u800c\u4e0b：\u786e\u4fdd\u7236\u7ec4\u4ef6\u5148\u5b8c\u6210 \u201c\u8d44\u6e90\u5206\u914d\u201d（\u5982\u521b\u5efa\u5b50\u7ec4\u4ef6 ），\u5b50\u7ec4\u4ef6\u518d\u521d\u59cb\u5316（\u5982\u00a0driver\u00a0\u5728\u00a0agent.build_phase\u00a0\u4e2d\u88ab\u521b\u5efa ）\u3002<\/li>\n
- connect_phase\u00a0\u81ea\u4e0b\u800c\u4e0a：\u786e\u4fdd\u5b50\u7ec4\u4ef6\u5148\u5b8c\u6210 \u201c\u7aef\u53e3\u8fde\u63a5\u201d（\u5982\u00a0driver.seq_item_port\u00a0\u8fde\u63a5\u00a0sequencer\u00a0），\u7236\u7ec4\u4ef6\u518d\u505a\u5168\u5c40\u8fde\u63a5（\u5982\u00a0agent\u00a0\u8fde\u63a5\u00a0scoreboard\u00a0）\u3002<\/li>\n<\/ul>\n
（2）\u8c03\u8bd5\u4e0e\u95ee\u9898\u5b9a\u4f4d<\/p>\n
- \n
- \u82e5\u5b50\u7ec4\u4ef6\u7684\u00a0build_phase\u00a0\u672a\u6267\u884c，\u9700\u68c0\u67e5\u7236\u7ec4\u4ef6\u662f\u5426\u5728\u00a0build_phase\u00a0\u4e2d\u6b63\u786e\u521b\u5efa\u4e86\u5b83（\u56e0\u00a0build_phase\u00a0\u81ea\u4e0a\u800c\u4e0b，\u7236\u7ec4\u4ef6\u672a\u521b\u5efa\u5219\u5b50\u7ec4\u4ef6\u65e0\u6cd5\u6267\u884c ）\u3002<\/li>\n
- \u82e5\u00a0connect_phase\u00a0\u903b\u8f91\u5f02\u5e38，\u9700\u68c0\u67e5\u662f\u5426\u56e0 \u201c\u81ea\u4e0b\u800c\u4e0a\u201d \u987a\u5e8f\u5bfc\u81f4，\u5b50\u7ec4\u4ef6\u7684\u7aef\u53e3\u672a\u51c6\u5907\u597d\u65f6\u7236\u7ec4\u4ef6\u5df2\u5f00\u59cb\u8fde\u63a5\u3002<\/li>\n<\/ul>\n
（3） \u590d\u6742\u573a\u666f\u63a7\u5236<\/p>\n
- \n
- \u5bf9\u4e8e\u591a\u00a0agent\u3001\u591a\u00a0sequence\u00a0\u7684\u9a8c\u8bc1\u5e73\u53f0，\u5229\u7528\u00a0\u5b57\u5178\u5e8f\u63a7\u5236\u540c\u7ea7\u7ec4\u4ef6\u6267\u884c\u987a\u5e8f，\u53ef\u786e\u4fdd\u7279\u5b9a\u7ec4\u4ef6\u4f18\u5148\u6267\u884c（\u5982\u00a0monitor\u00a0\u5148\u91c7\u6837，driver\u00a0\u540e\u9a71\u52a8 ）\u3002<\/li>\n<\/ul>\n
5. \u603b\u7ed3<\/h4>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0UVM phase \u6267\u884c\u987a\u5e8f\u7684\u6838\u5fc3\u903b\u8f91\u53ef\u5f52\u7eb3\u4e3a：<\/p>\n
- \n
- \u540c\u4e00\u7ec4\u4ef6\u5185：\u6309\u529f\u80fd\u9636\u6bb5\u987a\u5e8f（build\u2192connect\u2192run\u00a0\u7b49 ）\u4f9d\u6b21\u6267\u884c\u3002<\/li>\n
- \u6811\u5f62\u7ed3\u6784\u4e2d：build_phase\u00a0\u548c\u00a0final_phase\u00a0\u81ea\u4e0a\u800c\u4e0b，\u5176\u4f59 phase \u81ea\u4e0b\u800c\u4e0a\u3002<\/li>\n
- \u540c\u7ea7\u7ec4\u4ef6\u95f4：\u6309\u5b9e\u4f8b\u5316\u540d\u79f0\u7684\u5b57\u5178\u5e8f\u6267\u884c\u3002<\/li>\n<\/ul>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7406\u89e3\u8fd9\u4e09\u7c7b\u987a\u5e8f，\u80fd\u7cbe\u51c6\u63a7\u5236\u9a8c\u8bc1\u5e73\u53f0\u7684\u00a0\u7ec4\u4ef6\u521d\u59cb\u5316\u6d41\u7a0b\u3001\u7aef\u53e3\u8fde\u63a5\u65f6\u673a\u3001\u6fc0\u52b1\u6ce8\u5165\u987a\u5e8f，\u662f\u6784\u5efa\u590d\u6742 UVM \u9a8c\u8bc1\u73af\u5883\u7684\u57fa\u7840\u3002\u5b9e\u9a8c\u4e2d\u901a\u8fc7\u6253\u5370\u5404 phase \u6267\u884c\u65e5\u5fd7，\u53ef\u76f4\u89c2\u9a8c\u8bc1\u8fd9\u4e9b\u89c4\u5219，\u4e3a\u8c03\u8bd5\u548c\u4f18\u5316\u9a8c\u8bc1\u5e73\u53f0\u63d0\u4f9b\u4f9d\u636e\u3002<\/p>\n
（\u4e09）sequence \u6fc0\u52b1\u4ea7\u751f\u4e0e\u4ea4\u4e92\u6267\u884c\u673a\u5236<\/h3>\n
1.\u00a0sequence \u6838\u5fc3\u673a\u5236\u6982\u8ff0<\/h4>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728 UVM \u4e2d，sequence\u00a0\u673a\u5236\u662f\u6fc0\u52b1\u4ea7\u751f\u3001\u8c03\u5ea6\u4e0e\u9a71\u52a8\u7684\u6838\u5fc3，\u901a\u8fc7\u00a0sequence\u3001sequencer\u3001driver\u00a0\u7684\u534f\u4f5c，\u5b9e\u73b0 \u201c\u6fc0\u52b1\u751f\u6210\u2192\u4ef2\u88c1\u8c03\u5ea6\u2192\u4fe1\u53f7\u9a71\u52a8\u2192\u7ed3\u679c\u53cd\u9988\u201d \u7684\u5b8c\u6574\u95ed\u73af\u3002\u4ee5\u4e0b\u4ece\u00a0\u6267\u884c\u89c4\u5219\u3001\u4ee3\u7801\u6620\u5c04\u3001\u5b9e\u9a8c\u9a8c\u8bc1\u00a0\u4e09\u4e2a\u7ef4\u5ea6\u89e3\u6790\u5176\u6838\u5fc3\u903b\u8f91：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815074037-689ee475b1f43.png\")
<\/p>\n（1）\u6267\u884c\u89c4\u5219<\/p>\n
- \n
- \u89d2\u8272\u5206\u5de5：\n
- \n
- sequence：\u4f5c\u4e3a \u201c\u6fc0\u52b1\u751f\u6210\u5668\u201d，\u8d1f\u8d23\u521b\u5efa\u3001\u968f\u673a\u5316\u00a0sequence_item（\u4e8b\u52a1\u5305），\u5e76\u901a\u8fc7\u00a0sequencer\u00a0\u53d1\u9001\u7ed9\u00a0driver\u3002<\/li>\n
- sequencer：\u4f5c\u4e3a \u201c\u8c03\u5ea6\u4e2d\u5fc3\u201d，\u63a5\u6536\u591a\u4e2a\u00a0sequence\u00a0\u7684\u8bf7\u6c42，\u901a\u8fc7\u4ef2\u88c1\u7b97\u6cd5（\u5982 FIFO\u3001\u4f18\u5148\u7ea7）\u51b3\u5b9a\u53d1\u9001\u987a\u5e8f，\u518d\u8f6c\u53d1\u7ed9\u00a0driver\u3002<\/li>\n
- driver：\u4f5c\u4e3a \u201c\u6267\u884c\u8005\u201d，\u4ece\u00a0sequencer\u00a0\u83b7\u53d6\u00a0sequence_item，\u8f6c\u6362\u4e3a\u7269\u7406\u4fe1\u53f7\u9a71\u52a8 DUT，\u5e76\u53ef\u901a\u8fc7\u00a0response\u00a0\u53cd\u9988\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<\/li>\n
- \u4ea4\u4e92\u6d41\u7a0b（\u5b8c\u6574\u63e1\u624b）：\n
- \n
- sequence\u00a0\u751f\u6210\u00a0sequence_item\u00a0\u5e76\u968f\u673a\u5316，\u901a\u8fc7\u00a0start_item\/finish_item\u00a0\u63d0\u4ea4\u7ed9\u00a0sequencer\u3002<\/li>\n
- sequencer\u00a0\u4ef2\u88c1\u540e\u5c06\u00a0item\u00a0\u653e\u5165\u00a0REQ_FIFO，driver\u00a0\u901a\u8fc7\u00a0get_next_item\u00a0\u53d6\u8d70\u5e76\u9a71\u52a8 DUT\u3002<\/li>\n
- \u82e5\u9700\u53cd\u9988，driver\u00a0\u751f\u6210\u00a0response\u00a0\u653e\u5165\u00a0RSP_FIFO，sequence\u00a0\u901a\u8fc7\u00a0get_response\u00a0\u83b7\u53d6\u7ed3\u679c，\u5b8c\u6210\u751f\u547d\u5468\u671f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
（2）\u603b\u7ed3<\/p>\n
- \n
- sequence\u00a0\u4e13\u6ce8\u4e8e \u201c\u4ea7\u751f\u4ec0\u4e48\u6fc0\u52b1\u201d，\u652f\u6301\u968f\u673a\u5316\u548c\u7ea6\u675f，\u8986\u76d6\u591a\u6837\u5316\u6d4b\u8bd5\u573a\u666f\u3002<\/li>\n
- sequencer\u00a0\u4e13\u6ce8\u4e8e \u201c\u4f55\u65f6\u53d1\u9001\u6fc0\u52b1\u201d，\u901a\u8fc7\u4ef2\u88c1\u7b97\u6cd5\u534f\u8c03\u591a\u00a0sequence\u00a0\u7ade\u4e89\u3002<\/li>\n
- driver\u00a0\u4e13\u6ce8\u4e8e \u201c\u5982\u4f55\u9a71\u52a8\u6fc0\u52b1\u201d，\u5c06\u62bd\u8c61\u4e8b\u52a1\u8f6c\u6362\u4e3a\u7269\u7406\u4fe1\u53f7，\u786e\u4fdd\u65f6\u5e8f\u6b63\u786e<\/li>\n<\/ul>\n
2. sequence_item\u7684\u53d1\u9001<\/h4>\n
sequence \u7684\u6267\u884c\u5fc5\u987b\u5728 task body \u4e2d\u6267\u884c，task body \u662f\u5728 task phase \u4e2d\u81ea\u52a8\u8c03\u7528\u7684\u3002<\/p>\n
- <\/ul>\n
- \u65e5\u5fd7\u663e\u793a 20 \u6b21\u00a0item\u00a0\u53d1\u9001，\u6bcf\u6b21\u542b\u968f\u673a\u5316\u7684\u00a0addr\u3001data\u3002<\/li>\n
- \u6ce2\u5f62\u4e2d\u00a0dadd_if\u00a0\u63a5\u53e3\u7684\u4fe1\u53f7（\u5982\u00a0addr\u3001data\u00a0）\u4e0e\u65e5\u5fd7\u5339\u914d，\u8bc1\u660e\u00a0driver\u00a0\u6b63\u786e\u9a71\u52a8 DUT\u3002<\/li>\n<\/ul>\n
UVM_INFO dadd_sequence.sv(12) @ 100ns: uvm_test_top.env.iagt.sqr [SEQ] Sent item: addr=0x12, data=0x34, data_en=1<\/p>\n
- <\/ul>\n
- \u65e5\u5fd7\u4e0e\u65b9\u6cd5 1 \u7c7b\u4f3c，\u4f46\u4ee3\u7801\u66f4\u7b80\u6d01，uvm_create\/uvm_send\u00a0\u9690\u5f0f\u5b8c\u6210\u8fde\u63a5\u548c\u53d1\u9001\u3002<\/li>\n
- \u82e5\u4fee\u6539\u4e3a\u00a0uvm_create_on(item, env.oagt.sqr);，item\u00a0\u4f1a\u53d1\u9001\u5230\u00a0oagt\u00a0\u7684\u00a0sequencer，\u6ce2\u5f62\u4e2d\u00a0oagt\u00a0\u63a5\u53e3\u4fe1\u53f7\u53d8\u5316，\u9a8c\u8bc1\u8de8\u00a0agent\u00a0\u53d1\u9001\u3002<\/li>\n<\/ul>\n
（3）\u65b9\u6cd5 3：uvm_do\u00a0\u7cfb\u5217\u5b8f（\u9ad8\u7ea7\u5c01\u88c5，\u6700\u5e38\u7528）<\/p>\n
\u6267\u884c\u89c4\u5219： uvm_do\u00a0\u662f\u00a0\u201c\u4e00\u7ad9\u5f0f\u201d \u5b8f，\u76f4\u63a5\u5c01\u88c5 \u201c\u5b9e\u4f8b\u5316\u2192\u968f\u673a\u5316\u2192\u53d1\u9001\u201d \u5168\u6d41\u7a0b，\u751a\u81f3\u53ef\u5e26\u7ea6\u675f（uvm_do_with\u00a0）\u6216\u4f18\u5148\u7ea7（uvm_do_pri\u00a0），\u662f\u65e5\u5e38\u9a8c\u8bc1\u6700\u5e38\u7528\u7684\u65b9\u6cd5：<\/p>\n
\n
\u5b8f\u7c7b\u578b\u8bed\u6cd5\u793a\u4f8b\u4f5c\u7528\u8bf4\u660e<\/tr>\n \n\n \u57fa\u7840\u53d1\u9001<\/td>\n uvm_do(item);<\/td>\n \u81ea\u52a8\u5b8c\u6210\u5b9e\u4f8b\u5316\u3001\u968f\u673a\u5316\u3001\u53d1\u9001<\/td>\n<\/tr>\n \n \u5e26\u7ea6\u675f\u53d1\u9001<\/td>\n uvm_do_with(item, {item.data_en==1;});<\/td>\n \u968f\u673a\u5316\u65f6\u56fa\u5b9a\u00a0data_en=1，\u5176\u4ed6\u5b57\u6bb5\u968f\u673a<\/td>\n<\/tr>\n \n \u6307\u5b9a\u00a0sequencer\u00a0\u53d1\u9001<\/td>\n uvm_do_on(item, env.iagt.sqr);<\/td>\n \u5f3a\u5236\u00a0item\u00a0\u53d1\u9001\u5230\u00a0iagt\u00a0\u7684\u00a0sequencer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4ee3\u7801\u6620\u5c04（dadd_sequence.sv\u00a0\u4e2d\u00a0UVM_DO\u00a0\u5206\u652f ）：<\/p>\n
`else\/\/UVM_DO
\ntask body();
\n if(starting_phase != null)
\n starting_phase.raise_objection(this);
\n repeat(20) begin
\n `uvm_do(item) \/\/ \u4e00\u7ad9\u5f0f\u5b8c\u6210\u5b9e\u4f8b\u5316\u3001\u968f\u673a\u5316\u3001\u53d1\u9001
\n end
\n if(starting_phase != null)
\n starting_phase.drop_objection(this);
\nendtask : body
\n`endif<\/p>\n\u5b9e\u9a8c\u9a8c\u8bc1（\u6267\u884c\u00a0make send_item_uvm_do\u00a0）：<\/p>\n
- \n
- \u65e5\u5fd7\u4e0e\u524d\u4e24\u79cd\u65b9\u6cd5\u4e00\u81f4，\u4f46\u4ee3\u7801\u884c\u6570\u6700\u5c11，uvm_do\u00a0\u9690\u5f0f\u5b8c\u6210\u6240\u6709\u6b65\u9aa4\u3002<\/li>\n
- \u82e5\u4fee\u6539\u4e3a\u00a0uvm_do_with(item, {item.addr==0x5a5a;});，\u65e5\u5fd7\u4e2d\u00a0addr\u00a0\u56fa\u5b9a\u4e3a\u00a00x5a5a，\u9a8c\u8bc1\u7ea6\u675f\u751f\u6548\u3002<\/li>\n<\/ul>\n
2.3 \u5173\u952e\u7ec6\u8282\u4e0e\u5bf9\u6bd4<\/h5>\n
（1）\u65b9\u6cd5\u9009\u62e9\u5efa\u8bae<\/p>\n
- \n
- \u8c03\u8bd5\u9636\u6bb5：\u7528\u00a0start_item\/finish_item，\u9010\u884c\u63a7\u5236\u6d41\u7a0b，\u65b9\u4fbf\u5b9a\u4f4d\u95ee\u9898\u3002<\/li>\n
- \u8de8\u00a0agent\u00a0\u53d1\u9001：\u7528\u00a0uvm_create_on\u00a0\u6216\u00a0uvm_do_on，\u660e\u786e\u6307\u5b9a\u00a0sequencer，\u907f\u514d\u53d1\u9001\u5230\u9519\u8bef\u00a0agent\u3002<\/li>\n
- \u65e5\u5e38\u9a8c\u8bc1：\u4f18\u5148\u7528\u00a0uvm_do\u00a0\u7cfb\u5217\u5b8f，\u4ee3\u7801\u7b80\u6d01，\u51cf\u5c11\u6837\u677f\u4ee3\u7801\u3002<\/li>\n<\/ul>\n
（2）\u6613\u9519\u70b9<\/p>\n
- \n
- starting_phase\u00a0\u4e3a\u7a7a：\u82e5\u00a0sequence\u00a0\u672a\u5173\u8054\u00a0phase（\u5982\u672a\u5728\u00a0test\u00a0\u4e2d\u8bbe\u7f6e\u00a0starting_phase\u00a0），raise_objection\u00a0\u4f1a\u62a5\u9519，\u9700\u786e\u4fdd\u00a0sequence.starting_phase = phase;\u3002<\/li>\n
- uvm_create\u00a0\u672a\u6307\u5b9a\u00a0sequencer：\u82e5\u672a\u7528\u00a0uvm_create_on\u00a0\u4e14\u00a0p_sequencer\u00a0\u672a\u6b63\u786e\u8fde\u63a5，item\u00a0\u53ef\u80fd\u53d1\u9001\u5230\u00a0null\u00a0sequencer，\u89e6\u53d1\u00a0UVM_ERROR\u3002<\/li>\n<\/ul>\n
2.4 \u5b9e\u9a8c\u4ef7\u503c\u4e0e\u603b\u7ed3<\/h5>\n
\u901a\u8fc7\u00a0Makefile\u00a0\u811a\u672c\u5207\u6362\u5b8f\u5b9a\u4e49（START_ITEM\/UVM_CREATE\/UVM_DO\u00a0），\u53ef\u76f4\u89c2\u5bf9\u6bd4\u4e09\u79cd\u65b9\u6cd5\u7684\u6267\u884c\u6d41\u7a0b：<\/p>\n
- \n
- \u8bc1\u660e\u4e09\u7c7b\u65b9\u6cd5\u672c\u8d28\u662f\u540c\u4e00\u6d41\u7a0b\u7684\u4e0d\u540c\u5c01\u88c5，uvm_do\u00a0\u662f\u6700\u7b80\u6d01\u7684\u9ad8\u9636\u7528\u6cd5\u3002<\/li>\n
- \u9a8c\u8bc1\u5e73\u53f0\u53ef\u7075\u6d3b\u5207\u6362\u53d1\u9001\u65b9\u5f0f，\u9002\u914d\u4e0d\u540c\u6d4b\u8bd5\u573a\u666f（\u5982\u8c03\u8bd5\u3001\u8de8\u00a0agent\u00a0\u3001\u5e26\u7ea6\u675f\u53d1\u9001 ）\u3002<\/li>\n<\/ul>\n
3. sequence \u7684\u53d1\u9001<\/h4>\n
3.1 \u6838\u5fc3\u89c4\u5219：\u5b50\u00a0sequence\u00a0\u53d1\u9001\u7684\u4e09\u7c7b\u65b9\u6cd5<\/h5>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5f53\u00a0sequence\u00a0\u9700\u53d1\u9001\u5b50\u00a0sequence（\u5982\u00a0dadd_fixen_sequence\u00a0\u8c03\u7528\u00a0dadd_rand_sequence\u00a0）\u65f6，\u672c\u8d28\u662f\u00a0\u201c\u7236\u00a0sequence\u00a0\u8c03\u5ea6\u5b50\u00a0sequence\u00a0\u7684\u751f\u547d\u5468\u671f\u201d，\u4e09\u7c7b\u65b9\u6cd5\u7684\u6838\u5fc3\u5dee\u5f02\u5728\u4e8e \u201c\u8c03\u5ea6\u7684\u5c01\u88c5\u5c42\u7ea7\u201d：<\/p>\n
\n
\u65b9\u6cd5\u5206\u7c7b\u6838\u5fc3\u8bed\u6cd5\u5c01\u88c5\u5c42\u7ea7\u9002\u7528\u573a\u666f<\/tr>\n \n\n start\u00a0\u51fd\u6570<\/td>\n seq.start(p_sequencer);<\/td>\n \u6700\u5e95\u5c42，\u624b\u52a8\u63a7\u5236\u5b9e\u4f8b\u5316\u3001\u968f\u673a\u5316\u3001\u542f\u52a8<\/td>\n \u9700\u7cbe\u51c6\u63a7\u5236\u5b50\u00a0sequence\u00a0\u6d41\u7a0b<\/td>\n<\/tr>\n \n uvm_create\/uvm_send<\/td>\n uvm_create(seq);\u00a0+\u00a0uvm_send(seq);<\/td>\n \u5c01\u88c5\u00a0start\u00a0\u51fd\u6570，\u7b80\u5316\u8c03\u7528<\/td>\n \u9700\u663e\u5f0f\u63a7\u5236\u968f\u673a\u5316\u6b65\u9aa4<\/td>\n<\/tr>\n \n uvm_do\u00a0\u5b8f<\/td>\n uvm_do_with(seq, {\u7ea6\u675f;})<\/td>\n \u5c01\u88c5 \u201c\u5b9e\u4f8b\u5316 + \u968f\u673a\u5316 + \u542f\u52a8\u201d \u5168\u6d41\u7a0b<\/td>\n \u65e5\u5e38\u9a8c\u8bc1（\u7b80\u6d01\u9ad8\u6548）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 3.2 \u9010\u7c7b\u89e3\u6790：\u7ed3\u5408\u00a0dadd\u00a0\u4ee3\u7801\u4e0e\u811a\u672c<\/h5>\n
\u4ee5\u4e0b\u57fa\u4e8e\u00a0dadd_fixen_sequence.sv\u00a0\u548c\u00a0dadd_rand_sequence.sv\u00a0\u4ee3\u7801，\u8bf4\u660e\u6bcf\u79cd\u65b9\u6cd5\u7684\u7ec6\u8282：<\/p>\n
（1）\u65b9\u6cd5 1：start\u00a0\u51fd\u6570（\u624b\u52a8\u8c03\u5ea6\u5b50\u00a0sequence）<\/p>\n
\u6267\u884c\u89c4\u5219： \u624b\u52a8\u5b8c\u6210\u5b50\u00a0sequence\u00a0\u7684\u00a0\u201c\u5b9e\u4f8b\u5316\u2192\u968f\u673a\u5316\u7ea6\u675f\u2192\u542f\u52a8\u201d\u00a0\u5168\u6d41\u7a0b，\u9700\u663e\u5f0f\u8c03\u7528\u00a0start\u00a0\u51fd\u6570\u5173\u8054\u00a0p_sequencer（\u7236\u00a0sequence\u00a0\u6240\u5728\u7684\u00a0sequencer\u00a0）\u3002<\/p>\n
\n
\u6b65\u9aa4\u4ee3\u7801\u903b\u8f91\u4f5c\u7528\u8bf4\u660e<\/tr>\n \n\n 1. \u5b9e\u4f8b\u5316\u5b50\u00a0seq<\/td>\n seq = dadd_rand_sequence::type_id::create("seq");<\/td>\n \u521b\u5efa\u5b50\u00a0sequence\u00a0\u5bf9\u8c61（dadd_rand_sequence\u00a0）<\/td>\n<\/tr>\n \n 2. \u968f\u673a\u5316\u7ea6\u675f<\/td>\n seq.randomize() with {data_en_rand == 1;};<\/td>\n \u56fa\u5b9a\u5b50\u00a0sequence\u00a0\u7684\u00a0data_en_rand\u00a0\u4e3a 1，\u95f4\u63a5\u7ea6\u675f\u00a0dadd_item.data_en=1<\/td>\n<\/tr>\n \n 3. \u542f\u52a8\u5b50\u00a0seq<\/td>\n seq.start(p_sequencer);<\/td>\n \u8ba9\u5b50\u00a0sequence\u00a0\u6302\u8f7d\u5230\u7236\u00a0sequence\u00a0\u7684\u00a0sequencer（iagt.sqr\u00a0）\u4e0a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4ee3\u7801\u6620\u5c04（dadd_fixen_sequence.sv\u00a0\u4e2d\u00a0SEND_SEQ\u00a0\u5206\u652f ）：<\/p>\n
`ifdef SEND_SEQ
\n`ifdef START
\ntask body();
\n if(starting_phase != null)
\n starting_phase.raise_objection(this); \/\/ \u963b\u6b62\u4eff\u771f\u63d0\u524d\u7ed3\u675f<\/p>\n\/\/ 1. \u5b9e\u4f8b\u5316\u5b50 sequence
\n seq = dadd_rand_sequence::type_id::create("seq");
\n \/\/ 2. \u7ea6\u675f\u5b50 sequence \u7684 data_en_rand \u4e3a 1
\n seq.randomize() with {data_en_rand == 1;};
\n \/\/ 3. \u542f\u52a8\u5b50 sequence，\u6302\u8f7d\u5230 p_sequencer（iagt.sqr）
\n seq.start(p_sequencer); <\/p>\nif(starting_phase != null)
\n starting_phase.drop_objection(this); \/\/ \u5141\u8bb8\u4eff\u771f\u7ed3\u675f
\nendtask : body
\n`endif
\n`endif<\/p>\n\u5b9e\u9a8c\u9a8c\u8bc1（\u6267\u884c\u00a0make send_seq_start\u00a0）：<\/p>\n
- \n
- \u65e5\u5fd7\u663e\u793a\u5b50\u00a0sequence\u00a0\u88ab\u542f\u52a8，\u4e14\u00a0data_en\u00a0\u56fa\u5b9a\u4e3a 1：\n
plaintext<\/p>\n
UVM_INFO dadd_rand_sequence.sv(20) @ 100ns: uvm_test_top.env.iagt.sqr [SEQ] Sent item: data_en=1, addr=0x12, data=0x34\n <\/li>\n
- \u6ce2\u5f62\u4e2d\u00a0dadd_if.data_en\u00a0\u6052\u4e3a 1，\u8bc1\u660e\u7ea6\u675f\u751f\u6548\u3002<\/li>\n<\/ul>\n
（2）\u65b9\u6cd5 2：uvm_create\u00a0+\u00a0uvm_send（\u5c01\u88c5\u00a0start\u00a0\u51fd\u6570）<\/p>\n
\u6267\u884c\u89c4\u5219： \u7528\u00a0uvm_create\u00a0\u66ff\u4ee3\u624b\u52a8\u00a0new\u00a0\u5b9e\u4f8b\u5316\u5b50\u00a0sequence，\u7528\u00a0uvm_send\u00a0\u66ff\u4ee3\u00a0start\u00a0\u51fd\u6570，\u5c01\u88c5\u90e8\u5206\u6d41\u7a0b，\u4f46\u4ecd\u9700\u624b\u52a8\u968f\u673a\u5316\u3002<\/p>\n
\n
\u6b65\u9aa4\u4ee3\u7801\u903b\u8f91\u4f5c\u7528\u8bf4\u660e<\/tr>\n \n\n 1. \u5b9e\u4f8b\u5316\u5b50\u00a0seq<\/td>\n uvm_create(seq);<\/td>\n \u9690\u5f0f\u521b\u5efa\u5b50\u00a0sequence，\u5e76\u5173\u8054\u5230\u00a0p_sequencer<\/td>\n<\/tr>\n \n 2. \u968f\u673a\u5316\u7ea6\u675f<\/td>\n seq.randomize() with {data_en_rand == 1;};<\/td>\n \u540c\u65b9\u6cd5 1<\/td>\n<\/tr>\n \n 3. \u542f\u52a8\u5b50\u00a0seq<\/td>\n uvm_send(seq);<\/td>\n \u5c01\u88c5\u00a0start\u00a0\u51fd\u6570，\u7b80\u5316\u53d1\u9001\u6d41\u7a0b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4ee3\u7801\u6620\u5c04（dadd_fixen_sequence.sv\u00a0\u4e2d\u00a0UVM_CREATE\u00a0\u5206\u652f ）：<\/p>\n
`elsif UVM_CREATE
\ntask body();
\n if(starting_phase != null)
\n starting_phase.raise_objection(this);<\/p>\n\/\/ 1. \u5b9e\u4f8b\u5316\u5b50 sequence（\u9690\u5f0f\u5173\u8054 p_sequencer）
\n `uvm_create(seq);
\n \/\/ 2. \u7ea6\u675f\u5b50 sequence
\n seq.randomize() with {data_en_rand == 1;};
\n \/\/ 3. \u53d1\u9001\u5b50 sequence（\u5c01\u88c5 start \u51fd\u6570）
\n `uvm_send(seq); <\/p>\nif(starting_phase != null)
\n starting_phase.drop_objection(this);
\nendtask : body<\/p>\n\u5b9e\u9a8c\u9a8c\u8bc1（\u6267\u884c\u00a0make send_seq_uvm_create\u00a0）：<\/p>\n
- \n
- \u65e5\u5fd7\u4e0e\u65b9\u6cd5 1 \u7c7b\u4f3c，\u4f46\u4ee3\u7801\u66f4\u7b80\u6d01，uvm_create\/uvm_send\u00a0\u9690\u5f0f\u5b8c\u6210\u90e8\u5206\u6d41\u7a0b\u3002<\/li>\n
- \u82e5\u5220\u9664\u00a0seq.randomize()，data_en_rand\u00a0\u4f1a\u968f\u673a\u5316，\u9a8c\u8bc1\u00a0uvm_create\u00a0\u4e0d\u81ea\u52a8\u968f\u673a\u5316，\u9700\u624b\u52a8\u8c03\u7528\u3002<\/li>\n<\/ul>\n
（3）\u65b9\u6cd5 3：uvm_do\u00a0\u7cfb\u5217\u5b8f（\u4e00\u7ad9\u5f0f\u5c01\u88c5）<\/p>\n
\u6267\u884c\u89c4\u5219： uvm_do_with\u00a0\u5b8f\u00a0\u4e00\u7ad9\u5f0f\u5c01\u88c5\u201c\u5b9e\u4f8b\u5316 + \u968f\u673a\u5316 + \u542f\u52a8\u201d \u5168\u6d41\u7a0b，\u751a\u81f3\u53ef\u5728\u5b8f\u5185\u76f4\u63a5\u5199\u7ea6\u675f，\u65e0\u9700\u624b\u52a8\u8c03\u7528\u00a0randomize\u3002<\/p>\n
\n
\u6b65\u9aa4\u4ee3\u7801\u903b\u8f91\u4f5c\u7528\u8bf4\u660e<\/tr>\n \n\n 1. \u5b9e\u4f8b\u5316 + \u968f\u673a\u5316 + \u542f\u52a8<\/td>\n uvm_do_with(seq, {data_en_rand == 1;});<\/td>\n \u9690\u5f0f\u5b8c\u6210 \u201c\u521b\u5efa\u2192\u968f\u673a\u5316（\u5e26\u7ea6\u675f）\u2192\u542f\u52a8\u201d，\u6700\u7b80\u6d01<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4ee3\u7801\u6620\u5c04（dadd_fixen_sequence.sv\u00a0\u4e2d\u00a0UVM_DO\u00a0\u5206\u652f ）：<\/p>\n
`else\/\/UVM_DO
\ntask body();
\n if(starting_phase != null)
\n starting_phase.raise_objection(this);<\/p>\n\/\/ \u4e00\u7ad9\u5f0f\u5b8c\u6210：\u5b9e\u4f8b\u5316+\u968f\u673a\u5316（\u7ea6\u675f data_en_rand=1）+\u542f\u52a8
\n `uvm_do_with(seq, {data_en_rand == 1;}); <\/p>\nif(starting_phase != null)
\n starting_phase.drop_objection(this);
\nendtask : body<\/p>\n\u5b9e\u9a8c\u9a8c\u8bc1（\u6267\u884c\u00a0make send_seq_uvm_do\u00a0）：<\/p>\n
- \n
- \u65e5\u5fd7\u4e0e\u524d\u4e24\u79cd\u65b9\u6cd5\u4e00\u81f4，\u4f46\u4ee3\u7801\u884c\u6570\u6700\u5c11，uvm_do_with\u00a0\u9690\u5f0f\u5b8c\u6210\u6240\u6709\u6b65\u9aa4\u3002<\/li>\n
- \u82e5\u4fee\u6539\u7ea6\u675f\u4e3a\u00a0{data_en_rand == 0;}，\u6ce2\u5f62\u4e2d\u00a0data_en\u00a0\u6052\u4e3a 0，\u9a8c\u8bc1\u5b8f\u5185\u7ea6\u675f\u751f\u6548\u3002<\/li>\n<\/ul>\n
3.3 \u5173\u952e\u7ec6\u8282\u4e0e\u5bf9\u6bd4<\/h5>\n
（1）\u65b9\u6cd5\u9009\u62e9\u5efa\u8bae<\/p>\n
- \n
- \u8c03\u8bd5\u5b50\u00a0sequence：\u7528\u00a0start\u00a0\u51fd\u6570，\u9010\u884c\u63a7\u5236\u5b9e\u4f8b\u5316\u3001\u968f\u673a\u5316\u3001\u542f\u52a8，\u65b9\u4fbf\u5b9a\u4f4d\u95ee\u9898（\u5982\u7ea6\u675f\u4e0d\u751f\u6548\u65f6，\u68c0\u67e5\u00a0randomize\u00a0\u8c03\u7528 ）\u3002<\/li>\n
- \u9700\u663e\u5f0f\u968f\u673a\u5316：\u7528\u00a0uvm_create\/uvm_send，\u624b\u52a8\u63a7\u5236\u968f\u673a\u5316\u65f6\u673a（\u5982\u5148\u968f\u673a\u5316\u90e8\u5206\u5b57\u6bb5，\u518d\u8986\u76d6\u5176\u4ed6\u7ea6\u675f ）\u3002<\/li>\n
- \u65e5\u5e38\u5d4c\u5957\u53d1\u9001：\u4f18\u5148\u7528\u00a0uvm_do_with，\u4ee3\u7801\u6700\u7b80\u6d01，\u51cf\u5c11\u6837\u677f\u4ee3\u7801，\u9002\u5408\u9ad8\u9891\u4f7f\u7528\u3002<\/li>\n<\/ul>\n
（2）\u6613\u9519\u70b9<\/p>\n
- \n
- p_sequencer\u00a0\u672a\u5173\u8054：\u82e5\u5b50\u00a0sequence\u00a0\u672a\u901a\u8fc7\u00a0uvm_declare_p_sequencer\u00a0\u5173\u8054\u7236\u00a0sequencer，p_sequencer\u00a0\u4f1a\u7a7a\u6307\u9488\u62a5\u9519，\u9700\u786e\u4fdd：\n
systemverilog<\/p>\n
`uvm_declare_p_sequencer(dadd_sequencer) \/\/ \u5728\u5b50 sequence \u4e2d\u58f0\u660e\n <\/li>\n
- \u7ea6\u675f\u672a\u751f\u6548：\u82e5\u00a0uvm_do_with\u00a0\u4e2d\u7ea6\u675f\u8bed\u6cd5\u9519\u8bef（\u5982\u00a0data_en_rand = 1;\u00a0\u5c11\u5199\u00a0==\u00a0），\u7ea6\u675f\u4f1a\u88ab\u5ffd\u7565，\u9700\u68c0\u67e5\u7ea6\u675f\u8868\u8fbe\u5f0f\u3002<\/li>\n<\/ul>\n
3.4 \u5b9e\u9a8c\u4ef7\u503c\u4e0e\u603b\u7ed3<\/h5>\n
\u901a\u8fc7\u00a0Makefile\u00a0\u811a\u672c\u5207\u6362\u65b9\u6cd5（send_seq_start\/send_seq_uvm_create\/send_seq_uvm_do\u00a0），\u53ef\u76f4\u89c2\u5bf9\u6bd4\u4e09\u7c7b\u65b9\u6cd5\u7684\u6267\u884c\u6d41\u7a0b：<\/p>\n
- \n
- \u8bc1\u660e\u4e09\u7c7b\u65b9\u6cd5\u672c\u8d28\u662f\u540c\u4e00\u6d41\u7a0b\u7684\u4e0d\u540c\u5c01\u88c5，uvm_do\u00a0\u662f\u6700\u7b80\u6d01\u7684\u9ad8\u9636\u7528\u6cd5\u3002<\/li>\n
- \u9a8c\u8bc1\u5e73\u53f0\u53ef\u7075\u6d3b\u5207\u6362\u5b50\u00a0sequence\u00a0\u7684\u8c03\u5ea6\u65b9\u5f0f，\u9002\u914d\u4e0d\u540c\u6d4b\u8bd5\u573a\u666f（\u5982\u8c03\u8bd5\u3001\u9ad8\u6548\u5f00\u53d1\u3001\u590d\u6742\u7ea6\u675f ）\u3002<\/li>\n<\/ul>\n
\u638c\u63e1\u8fd9\u4e09\u7c7b\u65b9\u6cd5，\u53ef\u9ad8\u6548\u5b9e\u73b0 \u201c\u7236\u00a0sequence\u00a0\u8c03\u5ea6\u5b50\u00a0sequence\u201d \u7684\u5d4c\u5957\u903b\u8f91，\u662f\u6784\u5efa\u590d\u6742\u9a8c\u8bc1\u573a\u666f（\u5982 \u201c\u5148\u590d\u4f4d\u5b50\u00a0sequence，\u518d\u968f\u673a\u8bfb\u5199\u5b50\u00a0sequence\u201d ）\u7684\u57fa\u7840\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815074044-689ee47c22672.png\")
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- p_sequencer\u00a0\u672a\u5173\u8054：\u82e5\u5b50\u00a0sequence\u00a0\u672a\u901a\u8fc7\u00a0uvm_declare_p_sequencer\u00a0\u5173\u8054\u7236\u00a0sequencer，p_sequencer\u00a0\u4f1a\u7a7a\u6307\u9488\u62a5\u9519，\u9700\u786e\u4fdd：\n
- \u65e5\u5fd7\u663e\u793a\u5b50\u00a0sequence\u00a0\u88ab\u542f\u52a8，\u4e14\u00a0data_en\u00a0\u56fa\u5b9a\u4e3a 1：\n
（2）\u65b9\u6cd5 2：uvm_create\u00a0+\u00a0uvm_send（\u5b8f\u5c01\u88c5\u57fa\u7840\u6d41\u7a0b）<\/p>\n
\u6267\u884c\u89c4\u5219：\u7528\u00a0uvm_create\u00a0\u66ff\u4ee3\u00a0new\u00a0\u5b9e\u4f8b\u5316\u00a0item，\u7528\u00a0uvm_send\u00a0\u66ff\u4ee3\u00a0start_item\/finish_item\u00a0\u53d1\u9001，\u672c\u8d28\u662f\u00a0\u5c01\u88c5\u4e86\u57fa\u7840\u65b9\u6cd5\u7684\u8bed\u6cd5\u7cd6，\u4f46\u66f4\u7075\u6d3b（\u53ef\u6307\u5b9a\u00a0sequencer\u00a0）：<\/p>\n
\n
\u6b65\u9aa4\u4ee3\u7801\u903b\u8f91\u4f5c\u7528\u8bf4\u660e<\/tr>\n \n\n 1. \u5b9e\u4f8b\u5316\u00a0item<\/td>\n uvm_create(item);\u00a0\u6216\u00a0uvm_create_on(item, sqr);<\/td>\n \u4e0d\u4ec5\u521b\u5efa\u00a0item，\u8fd8\u53ef\u6307\u5b9a\u53d1\u9001\u5230\u54ea\u4e2a\u00a0sequencer（\u5982\u00a0iagt.sqr\u00a0\u6216\u00a0oagt.sqr\u00a0）<\/td>\n<\/tr>\n \n 2. \u968f\u673a\u5316\u00a0item<\/td>\n item.randomize();<\/td>\n \u540c\u65b9\u6cd5 1<\/td>\n<\/tr>\n \n 3. \u53d1\u9001\u7ed9\u00a0driver<\/td>\n uvm_send(item);<\/td>\n \u5c01\u88c5\u00a0start_item\/finish_item，\u7b80\u5316\u53d1\u9001\u6d41\u7a0b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4ee3\u7801\u6620\u5c04（dadd_sequence.sv\u00a0\u4e2d\u00a0UVM_CREATE\u00a0\u5206\u652f ）：<\/p>\n
`elsif UVM_CREATE
\ntask body();
\n if(starting_phase != null)
\n starting_phase.raise_objection(this);
\n repeat(20) begin
\n `uvm_create(item); \/\/ 1. \u5b9e\u4f8b\u5316（\u53ef\u6307\u5b9asequencer）
\n item.randomize(); \/\/ 2. \u968f\u673a\u5316
\n `uvm_send(item); \/\/ 3. \u53d1\u9001（\u5c01\u88c5start_item\/finish_item）
\n end
\n if(starting_phase != null)
\n starting_phase.drop_objection(this);
\nendtask : body
\n`endif<\/p>\n\u5b9e\u9a8c\u9a8c\u8bc1（\u6267\u884c\u00a0make send_item_uvm_create\u00a0）：<\/p>\n
- \n
2.1 \u6838\u5fc3\u89c4\u5219：sequence_item\u00a0\u53d1\u9001\u7684\u4e09\u79cd\u65b9\u6cd5<\/h5>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728 UVM \u4e2d，sequence\u00a0\u53d1\u9001\u00a0sequence_item（\u4e8b\u52a1\u5305，\u5982\u00a0dadd_item\u00a0）\u6709\u4e09\u7c7b\u5178\u578b\u65b9\u6cd5，\u672c\u8d28\u90fd\u662f\u00a0\u201c\u5b9e\u4f8b\u5316\u2192\u968f\u673a\u5316\u2192\u53d1\u9001\u7ed9\u00a0sequencer\u201d\u00a0\u7684\u6d41\u7a0b\u5c01\u88c5，\u4f46\u8bed\u6cd5\u548c\u590d\u6742\u5ea6\u4e0d\u540c：<\/p>\n
\n
\u65b9\u6cd5\u5206\u7c7b\u6838\u5fc3\u8bed\u6cd5\u5c01\u88c5\u5c42\u7ea7\u9002\u7528\u573a\u666f<\/tr>\n \n\n \u57fa\u7840\u65b9\u6cd5<\/td>\n start_item\u00a0+\u00a0finish_item<\/td>\n \u6700\u5e95\u5c42，\u65e0\u5c01\u88c5<\/td>\n \u9700\u7cbe\u51c6\u63a7\u5236\u53d1\u9001\u6d41\u7a0b（\u5982\u8c03\u8bd5）<\/td>\n<\/tr>\n \n \u5b8f\u5c01\u88c5\u65b9\u6cd5<\/td>\n uvm_create\u00a0+\u00a0uvm_send<\/td>\n \u5c01\u88c5\u00a0new\u00a0+\u00a0start_item\/finish_item<\/td>\n \u9700\u7075\u6d3b\u6307\u5b9a\u00a0sequencer<\/td>\n<\/tr>\n \n \u9ad8\u7ea7\u5b8f（\u5e38\u7528）<\/td>\n uvm_do\u00a0\u7cfb\u5217\u5b8f<\/td>\n \u5c01\u88c5\u00a0uvm_create\u00a0+ \u5b8c\u6574\u6d41\u7a0b<\/td>\n \u65e5\u5e38\u9a8c\u8bc1（\u7b80\u6d01\u9ad8\u6548）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 2.2 \u9010\u7c7b\u89e3\u6790：\u4ee3\u7801\u903b\u8f91\u4e0e\u5b9e\u9a8c\u9a8c\u8bc1<\/h5>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4ee5\u4e0b\u7ed3\u5408\u00a0dadd\u00a0\u9a8c\u8bc1\u5e73\u53f0\u7684\u00a0dadd_rand_sequence.sv\u00a0\u4ee3\u7801\u548c\u00a0Makefile\u00a0\u811a\u672c，\u8bf4\u660e\u6bcf\u79cd\u65b9\u6cd5\u7684\u7ec6\u8282：<\/p>\n
（1）\u65b9\u6cd5 1：start_item\u00a0+\u00a0finish_item（\u57fa\u7840\u6d41\u7a0b）<\/p>\n
\u6267\u884c\u89c4\u5219：\u624b\u52a8\u5b8c\u6210\u00a0sequence_item\u00a0\u7684\u00a0\u201c\u5b9e\u4f8b\u5316\u2192\u8fde\u63a5\u00a0sequencer\u2192\u968f\u673a\u5316\u2192\u53d1\u9001\u201d\u00a0\u5168\u6d41\u7a0b，\u6bcf\u4e00\u6b65\u9700\u663e\u5f0f\u8c03\u7528：<\/p>\n
\n
\u6b65\u9aa4\u4ee3\u7801\u903b\u8f91\u4f5c\u7528\u8bf4\u660e<\/tr>\n \n\n 1. \u5b9e\u4f8b\u5316\u00a0item<\/td>\n item = new("item");<\/td>\n \u521b\u5efa\u00a0dadd_item\u00a0\u4e8b\u52a1\u5bf9\u8c61，\u51c6\u5907\u627f\u8f7d\u6fc0\u52b1\u6570\u636e<\/td>\n<\/tr>\n \n 2. \u8fde\u63a5\u00a0sequencer<\/td>\n start_item(item);<\/td>\n \u8ba9\u00a0item\u00a0\u4e0e\u00a0iagt.sqr（\u8f93\u5165\u00a0agent\u00a0\u7684\u00a0sequencer\u00a0）\u5efa\u7acb\u8c03\u5ea6\u8fde\u63a5<\/td>\n<\/tr>\n \n 3. \u968f\u673a\u5316\u00a0item<\/td>\n item.randomize();<\/td>\n \u968f\u673a\u751f\u6210\u00a0addr\u3001data\u3001data_en\u00a0\u7b49\u5b57\u6bb5，\u6a21\u62df\u771f\u5b9e\u6fc0\u52b1<\/td>\n<\/tr>\n \n 4. \u53d1\u9001\u7ed9\u00a0driver<\/td>\n finish_item(item);<\/td>\n \u901a\u77e5\u00a0sequencer\u00a0\u5b8c\u6210\u8c03\u5ea6，\u5c06\u00a0item\u00a0\u8f6c\u53d1\u7ed9\u00a0driver\u00a0\u9a71\u52a8 DUT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4ee3\u7801\u6620\u5c04（dadd_sequence.sv\u00a0\u4e2d\u00a0START_ITEM\u00a0\u5206\u652f ）：<\/p>\n
`ifdef START_ITEM
\ntask body();
\n if(starting_phase != null)
\n starting_phase.raise_objection(this); \/\/ \u963b\u6b62\u4eff\u771f\u63d0\u524d\u7ed3\u675f
\n repeat(20) begin \/\/ \u53d1\u900120\u4e2a\u4e8b\u52a1
\n item = new("item"); \/\/ 1. \u5b9e\u4f8b\u5316
\n start_item(item); \/\/ 2. \u8fde\u63a5sequencer
\n item.randomize(); \/\/ 3. \u968f\u673a\u5316
\n finish_item(item); \/\/ 4. \u53d1\u9001\u7ed9driver
\n end
\n if(starting_phase != null)
\n starting_phase.drop_objection(this); \/\/ \u5141\u8bb8\u4eff\u771f\u7ed3\u675f
\nendtask : body
\n`endif<\/p>\n\u5b9e\u9a8c\u9a8c\u8bc1（\u6267\u884c\u00a0make send_item_start_item\u00a0）：<\/p>\n
- \n
- \u89d2\u8272\u5206\u5de5：\n
- \u5bf9\u4e8e\u591a\u00a0agent\u3001\u591a\u00a0sequence\u00a0\u7684\u9a8c\u8bc1\u5e73\u53f0，\u5229\u7528\u00a0\u5b57\u5178\u5e8f\u63a7\u5236\u540c\u7ea7\u7ec4\u4ef6\u6267\u884c\u987a\u5e8f，\u53ef\u786e\u4fdd\u7279\u5b9a\u7ec4\u4ef6\u4f18\u5148\u6267\u884c（\u5982\u00a0monitor\u00a0\u5148\u91c7\u6837，driver\u00a0\u540e\u9a71\u52a8 ）\u3002<\/li>\n<\/ul>\n
- \u540c\u7ea7\u7ec4\u4ef6\u7684 phase \u6267\u884c\u987a\u5e8f，\u4e25\u683c\u6309\u00a0\u201cnew \u65f6\u7684\u540d\u79f0\u5b57\u7b26\u4e32\u6bd4\u8f83\u201d，\u5982：\n
- \u903b\u8f91：\u5148\u6267\u884c\u53f6\u5b50\u7ec4\u4ef6（drv\u2192imon\u2192sqr\u00a0），\u518d\u6267\u884c\u7236\u7ec4\u4ef6（oagt\u2192env\u2192uvm_test_top\u00a0），\u7b26\u5408 \u201c\u81ea\u4e0b\u800c\u4e0a\u201d \u89c4\u5219\u3002<\/li>\n<\/ul>\n
- \u903b\u8f91：\u5148\u6267\u884c\u00a0uvm_test_top\u00a0\u7684\u00a0build_phase（\u672a\u5b8c\u6574\u6253\u5370 ），\u518d\u6267\u884c\u00a0env\u00a0\u7684\u00a0build_phase，\u7136\u540e\u6309\u5b57\u5178\u5e8f\u6267\u884c\u00a0iagt\u00a0\u5185\u7684\u00a0drv\u2192imon\u2192sqr，\u6700\u540e\u6267\u884c\u00a0oagt（\u56e0\u00a0iagt\u00a0\u5b57\u5178\u5e8f\u5c0f\u4e8e\u00a0oagt\u00a0）\u3002<\/li>\n<\/ul>\n
- \u5b9e\u9a8c\u6620\u5c04：\u82e5\u5728\u00a0dadd_driver\u00a0\u7684\u6240\u6709 phase \u4e2d\u52a0\u5165\u6253\u5370，\u4f1a\u770b\u5230\u8be5\u7ec4\u4ef6\u5185 phase \u4e25\u683c\u6309\u4e0a\u8ff0\u987a\u5e8f\u6267\u884c\u3002<\/li>\n<\/ul>\n
- \u89c4\u5219：\u540c\u4e00\u7ec4\u4ef6（\u5982\u00a0dadd_iagent\u00a0）\u5185，phase \u6309\u00a0\u201c\u529f\u80fd\u9636\u6bb5\u201d\u00a0\u987a\u5e8f\u6267\u884c，\u4ece\u00a0build_phase\u00a0\u5f00\u59cb，\u5230\u00a0final_phase\u00a0\u7ed3\u675f，\u6d41\u7a0b\u4e3a：<\/li>\n<\/ul>\n
- \u82e5\u9700\u53ea\u66ff\u6362\u67d0\u4e2a\u00a0agent\u00a0\u4e2d\u7684\u00a0driver（\u800c\u975e\u5168\u5c40\u66ff\u6362 ），\u53ef\u7528\u00a0set_inst_override，\u6307\u5b9a\u5b9e\u4f8b\u8def\u5f84（\u5982\u00a0uvm_test_top.env.iagt.drv\u00a0）\u3002<\/li>\n<\/ul>\n
- \u82e5\u5b50\u7c7b（\u5982\u00a0dadd_fixen_driver\u00a0）\u672a\u6ce8\u518c（\u5fd8\u8bb0\u00a0uvm_component_utils\u00a0\u5b8f ），\u5de5\u5382\u65e0\u6cd5\u8bc6\u522b，\u8986\u76d6\u4f1a\u5931\u8d25\u3002<\/li>\n<\/ul>\n
- dadd_iagent<\/span>\u00a0\u4e2d\u901a\u8fc7\u00a0<\/span>dadd_driver::type_id::create()<\/span>\u00a0\u521b\u5efa\u00a0<\/span>driver<\/span>\u00a0\u65f6，\u5de5\u5382\u81ea\u52a8\u5b9e\u4f8b\u5316\u00a0<\/span>dadd_fixen_driver<\/span>\u3002<\/span><\/li>\n
- \u5728\u00a0<\/span>dadd_rand_test<\/span>\u00a0\u7684\u00a0<\/span>build_phase<\/span>\u00a0\u8c03\u7528\u00a0<\/span>set_type_override<\/span>，\u66ff\u6362\u00a0<\/span>dadd_driver<\/span>\u00a0\u4e3a\u00a0<\/span>dadd_fixen_driver<\/span>\u3002<\/span><\/li>\n
- \u5173\u952e：dadd_in_en <= 1'b1\u00a0\u786c\u7f16\u7801\u4e3a 1，\u8986\u76d6\u539f\u00a0driver\u00a0\u7684\u968f\u673a\u884c\u4e3a\u3002<\/li>\n<\/ul>\n
- \u5173\u952e：\n
- \u5173\u952e：\n