{"id":3119,"date":"2023-07-14T16:36:22","date_gmt":"2023-07-14T08:36:22","guid":{"rendered":"https:\/\/mi.tcu.edu.tw\/?p=3119"},"modified":"2023-07-14T16:59:09","modified_gmt":"2023-07-14T08:59:09","slug":"%e3%80%8cwhat-is-risc-v-%e3%80%8d-%e6%99%ba%e6%85%a7%e6%99%b6%e7%89%87%e5%b7%a5%e4%bd%9c%e5%9d%8a","status":"publish","type":"post","link":"https:\/\/mi.tcu.edu.tw\/?p=3119","title":{"rendered":"\u300cWhat is RISC-V ? \u300d \u6148\u5927\u91ab\u8cc7\u667a\u6167\u6676\u7247\u5de5\u4f5c\u574a-I"},"content":{"rendered":"\n
\"\"<\/a><\/figure>\n\n\n

<\/p>\n

\u25ce\u300cWhat is RISC-V ? \u300d \u667a\u6167\u6676\u7247\u5de5\u4f5c\u574a
\u3010\u7b2c\u4e00\u6bb5\uff1a\u958b\u5834\u8aaa\u660e\u70ba\u4ec0\u9ebc\u8981\u5b78\u7fd2\u9019\u6a23\u7684\u67b6\u69cb\u4ee5\u53caRISC-V\u61c9\u7528\u3011
\u4e00\u958b\u59cb\u8b1b\u5e2b\u8207\u5927\u5bb6\u8aaa\u660eRISC-V\u9019\u6a23\u7684\u67b6\u69cb\u6703\u88ab\u5927\u91cf\u63a1\u7528\u5728\u65bcMCU(Micro Control Unit,\u5fae\u63a7\u5236\u5668)\/MPU(Micro Processing Unit,\u5fae\u8655\u7406\u5668)\u4e2d\uff0c\u4e26\u4e14\u540c\u6642\u8b1b\u8ff0\u76ee\u524d\u4e16\u754c\u5c40\u52e2(\u5982\u4e2d\u7f8e\u8cbf\u6613\u6230)\u662f\u70ba\u4f55\u5f71\u97ff\u79d1\u6280\u7684\u767c\u5c55\u3002\u8b1b\u5e2b\u4e0d\u53ea\u662f\u7d14\u7cb9\u8b1b\u89e3\u6280\u8853\u539f\u7406\uff0c\u800c\u662f\u5c07\u6280\u8853\u77e5\u8b58\u4ee3\u5165\u5728\u5834\u5404\u4f4d\u53c3\u8207\u8005\u7684\u89d2\u5ea6\u4f86\u4ecb\u7d39\uff0c\u597d\u6bd4\u5b78\u7fd2\u9019\u9805\u6280\u8853\uff0c\u6240\u9700\u80cc\u666f\u8ab2\u7a0b\u70ba\u6578\u4f4d\u908f\u8f2f\u6578\u8a08\u3001\u8a08\u7b97\u6a5f\u7d44\u7e54\u3001\u8a08\u7b97\u6a5f\u7d50\u69cb\u7b49\u3002\u5148\u6709\u67b6\u69cb\u6027\u7684\u8b1b\u8ff0\u524d\u56e0\u5f8c\u679c\uff0c\u6709\u52a9\u65bc\u5404\u4f4d\u5b78\u54e1\u5011\u9032\u5165\u8207\u4e86\u89e3\u9019\u6a23\u7684\u67b6\u69cb\u6240\u626e\u6f14\u7684\u5b9a\u4f4d\u8207\u89d2\u8272\u3002\u63a5\u8457\u8209\u4f8b\u8aaa\u660e\u7576\u4f60\u8981\u8a2d\u8a08\u4e00\u9846\u6578\u4f4d\u4fe1\u865f\u8655\u7406\u5668(DSP)\u4f86\u8655\u7406\u97f3\u983b\u6642\uff0c\u6703\u9700\u8981\u4e00\u9846\u57fa\u790e\u7684\u4e2d\u592e\u8655\u7406\u5668(CPU)\uff0c\u7576\u6e05\u695a\u719f\u6089\u6240\u9078\u64c7\u7684\u4e2d\u592e\u8655\u7406\u5668(CPU)\u8a2d\u8a08\u6846\u67b6\u6642\uff0c\u4fbf\u53ef\u589e\u52a0\u5ba2\u88fd\u5316\u6307\u4ee4\u4f86\u5b8c\u6210\u4e00\u9846\u5c08\u5c6c\u7684\u5c08\u7528\u8655\u7406\u5668\uff0c\u5728\u5be6\u4f5c\u9019\u6a23\u7684\u6280\u8853\u4e2d\uff0c\u6703\u9700\u8981\u5177\u6709\u8edf\u786c\u9ad4\u6574\u5408\u7684\u65b9\u5f0f\u4f86\u9054\u6210\uff0c\u6240\u8b02\u7684\u8edf\u9ad4\u6307\u7684\u662f\u5177\u6709\u5beb\u7a0b\u5f0f(\u6bd4\u5982C\u8a9e\u8a00)\u7684\u80fd\u529b\uff0c\u4e26\u4e86\u89e3\u8cc7\u6599\u7d50\u69cb\u3001\u6f14\u7b97\u6cd5\uff0c\u80fd\u900f\u904e\u7a0b\u5f0f\u8a9e\u8a00\u5be6\u73fe\uff0c\u540c\u6642\u4e5f\u9700\u4f5c\u696d\u7cfb\u7d71(OS)\u7684\u6982\u5ff5\uff0c\u4e86\u89e3\u5beb\u597d\u7684\u7a0b\u5f0f\u8981\u5982\u4f55\u6709\u6548\u7387\u7684\u904b\u4f5c\u4e26\u5b8c\u6210\u8907\u96dc\u7684\u904b\u7b97\u7b49\u3002\u800c\u786c\u9ad4\u6307\u7684\u662f\u4e86\u89e3\u6578\u4f4d\u96fb\u8def\u662f\u4ec0\u9ebc\u3001\u719f\u6089\u4e26\u6e05\u695a\u8a08\u7b97\u6a5f\u67b6\u69cb\u3001\u8a08\u7b97\u6a5f\u7d44\u7e54\u3001\u7d44\u5408\u8a9e\u8a00(\u76f8\u5c0dC\u8a9e\u8a00\u66f4\u70ba\u5e95\u5c64)\uff0c\u800c\u6700\u5f8c\u5229\u7528\u786c\u9ad4\u63cf\u8ff0\u8a9e\u8a00\u4f86\u5be6\u73fe\u6574\u500b\u786c\u9ad4\u67b6\u69cb\u7684\u60f3\u6cd5\u3002
\u7576\u5efa\u7acb\u57fa\u672c\u6982\u5ff5\u4e4b\u5f8c\uff0c\u63a5\u8457\u8b1b\u89e3\u57fa\u672c\u8a2d\u8a08\u6d41\u7a0b\uff0c\u6240\u9700\u7684\u5de5\u5177\uff0c\u6bd4\u5982\u9032\u884c\u6a21\u64ec\u53ef\u4f7f\u7528verilator\u3001\u96fb\u8def\u6574\u5408\u53ef\u4f7f\u7528\u7684EDA(Electronic Design Automation) \u5de5\u5177\u53ef\u4f7f\u7528Vivado\u7b49\u7b49\uff0c\u8b1b\u5e2b\u9664\u4e86\u8b1b\u89e3\u5de5\u5177\u7684\u529f\u7528\u4e4b\u5916\uff0c\u4e5f\u8aaa\u660e\u6bcf\u9805\u5de5\u5177\u5728\u6d41\u7a0b\u4e2d\u6240\u626e\u6f14\u7684\u89d2\u8272\uff0c\u4ee5\u5229\u63a5\u4e0b\u4f86\u8ab2\u7a0b\u7684\u5167\u5bb9\u7406\u89e3\u3002<\/p>\n

\u3010\u7b2c\u4e8c\u6bb5\uff1a\u8aaa\u660eRISC-V\u539f\u7406\u3001Pipeline\u904b\u4f5c\u67b6\u69cb\u3011
\u4ee5RISC-V\u7684\u6307\u4ee4\u96c6\u70ba\u8d77\u982d\uff0c\u4e00\u4e00\u4ecb\u7d39\u5404\u7a2e\u985e\u578b\u7684\u6307\u4ee4\u53ca\u683c\u5f0f\uff0c\u5f9eI type\u6307\u4ee4\u5230\u5982\u4f55\u5beb\u8dd1\u6a21\u64ec\u6642\u6703\u7528\u5230\u7684testbench(\u6a21\u64ec\u6e2c\u8a66\u7a0b\u5f0f)\uff0c\u8b1b\u5e2b\u7686\u5f9e\u982d\u4e00\u6b65\u4e00\u6b65\u8b1b\u89e3\u3002\u4e26\u5728\u904e\u7a0b\u4e2d\u6703\u5f37\u8abf\u9019\u9ebc\u505a\u7684\u76ee\u7684\u6027\uff0c\u70ba\u7684\u662f\u80fd\u8b93\u53c3\u8207\u8005\u5b8c\u6574\u7684\u7406\u89e3\u80cc\u5f8c\u7684\u539f\u7406\u3002
\u8b1b\u89e3\u5b8cRISC-V\u57fa\u672c\u898f\u683c\u4e4b\u5f8c\uff0c\u4ee5Pipeline(\u7ba1\u7dda)\u7684\u904b\u4f5c\u67b6\u69cb\u8b1b\u89e3CPU\u662f\u5982\u4f55\u8655\u7406\u6307\u4ee4\u4f86\u5b8c\u6210\u904b\u7b97\u3002Pipeline\u662f\u4ee55\u500bstage\u7684\u65b9\u5f0f\u5f9e\u6307\u4ee4\u64f7\u53d6\u3001\u6307\u4ee4\u89e3\u78bc\u3001\u6307\u4ee4\u904b\u7b97\u5230\u5c07\u904b\u7b97\u7d50\u679c\u5beb\u56de\u8a18\u61b6\u9ad4\u4e2d\u5132\u5b58\uff0c\u6700\u5f8c\u518d\u9032\u884c\u6a21\u64ec\uff0c\u5c07\u6e2c\u8a66\u6307\u4ee4(\u7d44\u5408\u8a9e\u8a00)\u8207testbench(c\u8a9e\u8a00)\u4ee5verilator\u9019\u9805\u5de5\u5177\u4f86\u9a57\u8b49\u5efa\u7acb\u597d\u7684\u6307\u4ee4\u662f\u5426\u53ef\u6b63\u5e38\u904b\u4f5c\u53ca\u904b\u7b97\u6b63\u78ba\u3002\u900f\u904e\u8b1b\u5e2b\u81ea\u5df1\u6240\u7de8\u7684\u8b1b\u7fa9\u4e2d\u7684\u7bc4\u4f8b\uff0c\u4e00\u6bb5\u6bb5\u8aaa\u660e\u4e26\u642d\u914d\u677f\u66f8\u7684\u65b9\u5f0f\u6e05\u695a\u89e3\u91cb\u7d66\u5728\u5ea7\u7684\u53c3\u8207\u8005\u3002
\u5728\u5efa\u7acb\u6574\u9ad4\u786c\u9ad4\u67b6\u69cb\u4e0a\u662f\u4ee5\u786c\u9ad4\u63cf\u8ff0\u8a9e\u8a00(Verilog)\u4f86\u5b8c\u6210\u6578\u4f4d\u96fb\u8def\uff0c\u4ee5ORI\u6307\u4ee4\u70ba\u4f8b\u8a73\u7d30\u8b1b\u8ff0I type\u6307\u4ee4\u3002\u6307\u4ee4\u904b\u7b97\u7d50\u675f\u5f8c\u9700\u5c07\u7d50\u679c\u5b58\u653e\u5230\u8a18\u61b6\u9ad4\u4e2d\uff0c\u800c\u5b58\u653e\u7684\u65b9\u5f0f\u5206\u70baBig-Endian\u53caLittle-Endian\u5169\u7a2e\uff0c\u4f9d\u64da\u4e0d\u540c\u7684\u653e\u6cd5\uff0c\u6307\u4ee4\u5728\u8a18\u61b6\u9ad4\u4e2d\u7684\u4f4d\u5740\u6703\u6709\u5dee\u7570\u3002\u800c\u70ba\u4e86\u80fd\u8b93\u53c3\u8207\u8005\u4e86\u89e3Verilog\u7684\u8a9e\u6cd5\u53ca\u7528\u6cd5\uff0c\u8b1b\u5e2b\u4ee5\u7c21\u6613\u76844\u4f4d\u5143\u52a0\u6cd5\u5668\u70ba\u4f8b\u9032\u884c\u8aaa\u660e\u3002<\/p>\n

\u3010\u7b2c\u4e09\u6bb5\uff1a\u8b93\u540c\u5b78\u5011\u4e0a\u6a5f\u7df4\u7fd2\uff0c\u5be6\u969b\u64cd\u4f5cORI\u6307\u4ee4\u7bc4\u4f8b\u3011
\u7d93\u904e\u4e0a\u5348\u7406\u8ad6\u53ca\u80cc\u666f\u77e5\u8b58\u8b1b\u89e3\u5f8c\uff0c\u4e0b\u5348\u7684\u6d3b\u52d5\u5148\u8907\u7fd2\u6982\u5ff5\uff0c\u8b1b\u5e2b\u518d\u57f7\u884c\u4e00\u904d\u4e0a\u6a5f\u7684\u7df4\u7fd2\uff0c\u63a5\u8457\u8b93\u53c3\u8207\u8005\u76f4\u63a5\u4e0a\u6a5f\u64cd\u4f5c\uff0c\u900f\u904e\u7406\u8ad6\u7d50\u5408\u5be6\u4f5c\u4f86\u52a0\u6df1\u6574\u500b\u67b6\u69cb\u7684\u6982\u5ff5\u3002\u4e0a\u6a5f\u904e\u7a0b\u4e2d\uff0c\u5b78\u54e1\u5011\u6709\u7591\u60d1\u6642\uff0c\u8b1b\u5e2b\u8207\u52a9\u6559\u90fd\u5f88\u7528\u5fc3\u7684\u89e3\u60d1\uff0c\u4ee5\u4e00\u684c\u4e00\u4f4d\u52a9\u6559\u70ba\u57fa\u672c\uff0c\u4f86\u5354\u52a9\u5b78\u54e1\u5b8c\u6210\u4e0a\u6a5f\u3002\u900f\u904e\u8b1b\u5e2b\u3001\u52a9\u6559\u53ca\u5b78\u54e1\u4e09\u65b9\u8a0e\u8ad6\u7684\u6a21\u5f0f\uff0c\u4e0d\u55ae\u53ea\u662f\u55ae\u5411\u89e3\u6c7a\u5b78\u54e1\u5011\u7522\u751f\u7684\u554f\u984c\uff0c\u4e5f\u9054\u5230\u6559\u5b78\u76f8\u9577\uff0c\u4e92\u76f8\u5b78\u7fd2\u8a0e\u8ad6\u7684\u98a8\u6c23\u3002<\/p>\n

\u3010\u7b2c\u56db\u6bb5\uff1a\u73fe\u5834\u8aaa\u660e\u5982\u4f55\u5be6\u4f5c\u5728FPGA\u4e0a\u3011
\u8b1b\u5e2b\u6e96\u5099\u4e00\u9846\u67b6\u69cb\u5b8c\u6574\u7684RISC-V CPU\u6838\u5fc3\u4f86\u5be6\u969b\u71d2\u5728FPGA (Field Programmable Gate Array)\u677f\u4e0a\u4f86\u5be6\u4f5c\u4f5c\u696d\u7cfb\u7d71\u4e2d\u7684context-switch\u3002\u6b64\u90e8\u5206\u6703\u9700\u8981\u4f7f\u7528EDA \u5de5\u5177(Vivado)\u4f86\u5c07\u6578\u4f4d\u96fb\u8def\u71d2\u5728FPGA\u4e0a\u3002\u56e0\u6b64\u524d\u6bb5\u5148\u4ecb\u7d39\u6240\u4f7f\u7528\u7684\u5de5\u5177\u53ca\u4f7f\u7528\u6d41\u7a0b\u6559\u5b78\uff0c\u6700\u5f8c\u5c07\u7d50\u679c\u5448\u73fe\u7d66\u5728\u5ea7\u7684\u5b78\u54e1\u5011\u3002\u5e0c\u671b\u80fd\u8b93\u5b78\u54e1\u66f4\u5177\u9ad4\u4e86\u89e3\u4e00\u9846\u5b8c\u6574\u7684\u6838\u5fc3\u80fd\u505a\u5230\u4ec0\u9ebc\u6a23\u7684\u4e8b\u3002\u6574\u500b\u904e\u7a0b\u5c31\u662f\u9700\u8981\u8edf\u786c\u9ad4\u6280\u8853\u6574\u5408\u4f86\u5b8c\u6210\u3002<\/p>\n

\u3010\u7b2c\u4e94\u6bb5\uff1a\u6574\u9ad4\u6c23\u6c1b\u8207\u53c3\u8207\u8005\u7684\u56de\u994b\u3011
\u5de5\u4f5c\u574a\u904e\u7a0b\u4e2d\uff0c\u8b1b\u5e2b\u8a8d\u771f\u8a73\u7d30\u7684\u8b1b\u89e3\u53ca\u91cd\u8996\u5b78\u54e1\u5011\u662f\u5426\u80fd\u5438\u6536\u8ab2\u7a0b\u5167\u5bb9\uff0c\u4e26\u9f13\u52f5\u5b78\u54e1\u8e34\u8e8d\u63d0\u554f\uff0c\u5f37\u8abf\u7406\u8ad6\u642d\u914d\u5be6\u4f5c\u7684\u91cd\u8981\u6027\u3002\u8ab2\u7a0b\u5f8c\u5b78\u54e1\u5011\u56de\u994b\u5c0d\u65bc\u6b64\u6b21\u5de5\u4f5c\u574a\u5167\u5bb9\uff0c\u611f\u53d7\u5230\u8b1b\u5e2b\u4e0a\u8ab2\u5f88\u5c08\u696d\u3001\u7528\u5fc3\uff0c\u5167\u5bb9\u8c50\u5bcc\u5f88\u5145\u5be6\uff0c\u53d7\u76ca\u826f\u591a\u3002\u672c\u6b21\u8b1b\u5e2b\u70ba\u570b\u7acb\u6771\u83ef\u5927\u5b78\u8cc7\u8a0a\u5de5\u7a0b\u5b78\u7cfb\uff0c\u8521\u6b63\u96c4\u6559\u6388\uff0c\u4ee5\u5e36\u5165\u5be6\u52d9\u7684\u6848\u4f8b\u548c\u60c5\u5883\u984c\u4f86\u8207\u5927\u5bb6\u8166\u529b\u6fc0\u76ea\uff0c\u8ab2\u7a0b\u5167\u5bb9\u751f\u52d5\u53c8\u5177\u5c08\u696d\u6027\u3002\u6700\u5f8c\uff0c\u8b1b\u5e2b\u9f13\u52f5\u5b78\u54e1\u5011\u5de5\u4f5c\u574a\u7d50\u675f\u5f8c\uff0c\u53ef\u6839\u64da\u63d0\u4f9b\u7684\u7dda\u4e0a\u8b1b\u7fa9\u81ea\u5df1\u52d5\u624b\u5b8c\u6210\u4e00\u9846\u5c08\u5c6c\u65bc\u81ea\u5df1\u7684RISC-V \u8655\u7406\u5668\u3002
\u3010\u7b2c\u516d\u6bb5\uff1a\u7d50\u5c3e\u3011
\u96a8\u8457RISC-V\u8a0e\u8ad6\u5ea6\u8d8a\u4f86\u8d8a\u9ad8\u7684\u6642\u523b\uff0c\u4ee5RISC-V\u4f86\u958b\u767c\u8655\u7406\u5668\u7684\u61c9\u7528\u8d8a\u52a0\u5ee3\u6cdb\uff0c\u672c\u6b21\u5de5\u4f5c\u574a\u4ee5RISC-V\u7684\u57fa\u672c\u67b6\u69cb\u4f5c\u8d77\u982d\uff0c\u4ee5\u5be6\u4f5c\u904e\u7a0b\u4f7f\u5b78\u54e1\u5011\u611f\u53d7\u5230RISC-V\u7684\u904b\u4f5c\u6a21\u5f0f\uff0c\u900f\u904e\u5be6\u4f8b\u7684\u8b1b\u89e3\uff0c\u5e0c\u671b\u80fd\u5f15\u8d77\u5b78\u54e1\u5011\u7684\u8208\u8da3\uff0c\u4e0d\u50c5\u662f\u8a8d\u8b58\u4e86\u89e3\u8a72\u67b6\u69cb\uff0c\u4e5f\u671f\u671b\u80fd\u66ff\u5b78\u54e1\u5011\u5728\u672a\u4f86\u51fa\u8def\u4e0a\u589e\u52a0\u9818\u57df\u9078\u64c7\u7684\u9748\u611f\u3002\u53c3\u8207\u5b8c\u672c\u5de5\u4f5c\u574a\uff0c\u9664\u4e86\u80fd\u5b78\u7fd2\u5230\u5145\u5be6\u7684\u6280\u8853\u5916\uff0c\u4ea6\u80fd\u8207\u6642\u4ff1\u9032\uff0c\u8ddf\u4e0a\u79d1\u6280\u65e5\u76ca\u66f4\u65b0\u7684\u8173\u6b65\u3002(\u6587\/\u7167\u7247\uff1a\u91ab\u5b78\u8cc7\u8a0a\u5b78\u7cfb)\u3002<\/p>\n

2023\/5\/26 \u8b1b\u5e2b\u9032\u884c\u539f\u7406\u53ca\u67b6\u69cb\u8b1b\u89e3 2023\/5\/26\u8b1b\u5e2b\u8207\u52a9\u6559\u5354\u52a9\u5b78\u54e1\u5011\u9032\u884c\u4e0a\u6a5f<\/p>\n

2023\/5\/26 \u8b1b\u89e3EDA\u5de5\u5177\u53ca\u4f7f\u7528\u6559\u5b78 2023\/5\/26 \u73fe\u5834\u64cd\u4f5cFPGA\u5be6\u4f5c\u5f8c\u7684\u7d50\u679c<\/p>\n\n\n

\"\"<\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"

\u25ce\u300cWhat is RISC-V ? \u300d \u667a\u6167\u6676\u7247\u5de5\u4f5c\u574a\u3010\u7b2c\u4e00\u6bb5\uff1a\u958b\u5834\u8aaa\u660e\u70ba\u4ec0\u9ebc\u8981\u5b78\u7fd2\u9019\u6a23\u7684\u67b6\u69cb\u4ee5\u53caRISC- […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[18],"tags":[20],"class_list":["post-3119","post","type-post","status-publish","format-standard","hentry","category-18","tag-20"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"sow-carousel-default":false},"uagb_author_info":{"display_name":"\u91ab\u8cc7\u7cfb \u7ba1\u7406\u54e1","author_link":"https:\/\/mi.tcu.edu.tw\/?author=5"},"uagb_comment_info":0,"uagb_excerpt":"\u25ce\u300cWhat is RISC-V ? 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