{"id":42021,"date":"2025-06-06T03:03:22","date_gmt":"2025-06-05T19:03:22","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/42021.html"},"modified":"2025-06-06T03:03:22","modified_gmt":"2025-06-05T19:03:22","slug":"%e7%89%b9%e6%ae%8a%e5%ad%97%e7%ac%a6%e3%80%8a%e8%ae%a1%e7%ae%97%e6%9c%ba%e7%bb%84%e6%88%90%e5%8e%9f%e7%90%86%e3%80%8b%e7%ac%ac-8-%e7%ab%a0-cpu-%e7%9a%84%e7%bb%93%e6%9e%84%e5%92%8c%e5%8a%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/42021.html","title":{"rendered":"[\u7279\u6b8a\u5b57\u7b26]\u300a\u8ba1\u7b97\u673a\u7ec4\u6210\u539f\u7406\u300b\u7b2c 8 \u7ae0 - CPU \u7684\u7ed3\u6784\u548c\u529f\u80fd"},"content":{"rendered":"

<\/h2>\n

🔵8.1 CPU \u7684\u7ed3\u6784<\/span><\/h2>\n

🔵8.1.1 CPU \u7684\u529f\u80fd<\/span><\/h4>\n

CPU（\u4e2d\u592e\u5904\u7406\u5668）\u662f\u8ba1\u7b97\u673a\u7684\u6838\u5fc3\u90e8\u4ef6，\u4e3b\u8981\u8d1f\u8d23\u4ee5\u4e0b\u4efb\u52a1：<\/p>\n

    \n
  • \u6307\u4ee4\u6267\u884c：\u89e3\u6790\u5e76\u6267\u884c\u6307\u4ee4\u96c6\u67b6\u6784（ISA）\u5b9a\u4e49\u7684\u6307\u4ee4<\/li>\n
  • \u6570\u636e\u5904\u7406：\u5b8c\u6210\u7b97\u672f\u8fd0\u7b97（\u5982\u52a0\u51cf\u4e58\u9664）\u548c\u903b\u8f91\u8fd0\u7b97（\u5982\u4e0e\u6216\u975e）<\/li>\n
  • \u5b58\u50a8\u63a7\u5236：\u7ba1\u7406\u5185\u5b58\u8bbf\u95ee（\u8bfb\u53d6 \/ \u5199\u5165\u6570\u636e）<\/li>\n
  • \u8f93\u5165\u8f93\u51fa\u63a7\u5236：\u534f\u8c03 CPU \u4e0e\u5916\u90e8\u8bbe\u5907\u7684\u6570\u636e\u4f20\u8f93<\/li>\n
  • \u4e2d\u65ad\u5904\u7406：\u54cd\u5e94\u5916\u90e8\u8bbe\u5907\u7684\u5f02\u6b65\u8bf7\u6c42<\/li>\n<\/ul>\n

    \u6848\u4f8b：\u7b80\u5355\u7b97\u672f\u8fd0\u7b97\u5b9e\u73b0<\/p>\n

    \/\/ \u6a21\u62dfCPU\u6267\u884c\u52a0\u6cd5\u8fd0\u7b97
    \npublic class SimpleCPU {
    \n \/\/ \u901a\u7528\u5bc4\u5b58\u5668
    \n private int accumulator; \/\/ \u7d2f\u52a0\u5668
    \n private int registerB; \/\/ \u901a\u7528\u5bc4\u5b58\u5668B<\/p>\n

    \/\/ \u6267\u884c\u52a0\u6cd5\u6307\u4ee4
    \n public void addInstruction(int operand) {
    \n \/\/ \u6a21\u62df\u53d6\u64cd\u4f5c\u6570\u5230\u5bc4\u5b58\u5668B
    \n registerB = operand;
    \n \/\/ \u6267\u884c\u52a0\u6cd5\u8fd0\u7b97（\u7d2f\u52a0\u5668 + \u5bc4\u5b58\u5668B）
    \n accumulator += registerB;
    \n System.out.println("\u52a0\u6cd5\u7ed3\u679c：" + accumulator);
    \n }<\/p>\n

    public static void main(String[] args) {
    \n SimpleCPU cpu = new SimpleCPU();
    \n cpu.addInstruction(5); \/\/ \u521d\u59cb\u7d2f\u52a0\u5668\u4e3a0，\u6267\u884c0+5=5
    \n cpu.addInstruction(3); \/\/ \u6267\u884c5+3=8
    \n }
    \n}<\/p>\n

    🔵8.1.2 CPU \u7ed3\u6784\u6846\u56fe<\/span><\/h4>\n

    \"\"<\/p>\n

    \u56fe\u6ce8：\u63a7\u5236\u5355\u5143\u534f\u8c03\u5404\u90e8\u4ef6\u5de5\u4f5c，ALU \u8d1f\u8d23\u8fd0\u7b97，\u5bc4\u5b58\u5668\u7ec4\u5b58\u50a8\u6570\u636e\u548c\u5730\u5740<\/p>\n

    🔵8.1.3 CPU \u7684\u5bc4\u5b58\u5668<\/span><\/h4>\n
    \u5206\u7c7b\u53ca\u529f\u80fd<\/h5>\n\n\u5bc4\u5b58\u5668\u7c7b\u578b\u5178\u578b\u5bc4\u5b58\u5668\u529f\u80fd\u63cf\u8ff0<\/tr>\n\n\n\n\n\n\n
    \u7a0b\u5e8f\u63a7\u5236\u7c7b<\/td>\n\u7a0b\u5e8f\u8ba1\u6570\u5668 PC<\/td>\n\u5b58\u50a8\u4e0b\u4e00\u6761\u6307\u4ee4\u7684\u5185\u5b58\u5730\u5740<\/td>\n<\/tr>\n
    <\/td>\n\u6307\u4ee4\u5bc4\u5b58\u5668 IR<\/td>\n\u5b58\u50a8\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u6307\u4ee4<\/td>\n<\/tr>\n
    \u6570\u636e\u5b58\u50a8\u7c7b<\/td>\n\u7d2f\u52a0\u5668 ACC<\/td>\n\u5b58\u653e\u8fd0\u7b97\u7ed3\u679c\u548c\u5f85\u8fd0\u7b97\u6570\u636e<\/td>\n<\/tr>\n
    <\/td>\n\u901a\u7528\u5bc4\u5b58\u5668 GR<\/td>\n\u4e34\u65f6\u5b58\u50a8\u6570\u636e（\u5982 AX\/BX\/CX\/DX \u7b49）<\/td>\n<\/tr>\n
    \u72b6\u6001\u63a7\u5236\u7c7b<\/td>\n\u72b6\u6001\u5bc4\u5b58\u5668 PSW<\/td>\n\u5b58\u50a8\u8fd0\u7b97\u72b6\u6001\u6807\u5fd7（\u5982\u8fdb\u4f4d \/ \u6ea2\u51fa）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u4ee3\u7801\u793a\u4f8b：\u5bc4\u5b58\u5668\u64cd\u4f5c\u6a21\u62df<\/p>\n

    \/\/ \u6a21\u62df\u5bc4\u5b58\u5668\u7ec4\u64cd\u4f5c
    \npublic class RegisterDemo {
    \n private int pc; \/\/ \u7a0b\u5e8f\u8ba1\u6570\u5668
    \n private int ir; \/\/ \u6307\u4ee4\u5bc4\u5b58\u5668
    \n private int acc; \/\/ \u7d2f\u52a0\u5668
    \n private int psw; \/\/ \u72b6\u6001\u5bc4\u5b58\u5668（\u4e8c\u8fdb\u5236\u4f4d\u8868\u793a\u72b6\u6001）<\/p>\n

    \/\/ \u6a21\u62df\u53d6\u6307\u4ee4\u64cd\u4f5c
    \n public void fetchInstruction(int address) {
    \n pc = address; \/\/ \u8bbe\u7f6ePC\u5230\u76ee\u6807\u5730\u5740
    \n ir = loadFromMemory(pc);\/\/ \u4ece\u5185\u5b58\u6a21\u62df\u51fd\u6570\u83b7\u53d6\u6307\u4ee4
    \n System.out.println("\u53d6\u6307\u4ee4：IR=" + ir);
    \n }<\/p>\n

    private int loadFromMemory(int addr) {
    \n \/\/ \u7b80\u5316\u6a21\u62df：\u8fd4\u56de\u56fa\u5b9a\u6307\u4ee4（\u5047\u8bbe0x1234\u4e3a\u52a0\u6cd5\u6307\u4ee4）
    \n return 0x1234;
    \n }
    \n}<\/p>\n

    🔵8.1.4 \u63a7\u5236\u5355\u5143\u548c\u4e2d\u65ad\u7cfb\u7edf<\/span><\/h4>\n
    \u63a7\u5236\u5355\u5143\u529f\u80fd<\/h5>\n
      \n
    • \u751f\u6210\u65f6\u5e8f\u4fe1\u53f7：\u63a7\u5236\u6307\u4ee4\u6267\u884c\u7684\u65f6\u5e8f（\u65f6\u949f\u5468\u671f）<\/li>\n
    • \u6307\u4ee4\u8bd1\u7801：\u89e3\u6790 IR \u4e2d\u7684\u6307\u4ee4\u64cd\u4f5c\u7801<\/li>\n
    • \u53d1\u51fa\u63a7\u5236\u4fe1\u53f7：\u9a71\u52a8 ALU\u3001\u5bc4\u5b58\u5668\u3001\u5185\u5b58\u7b49\u90e8\u4ef6\u52a8\u4f5c<\/li>\n<\/ul>\n
      \u4e2d\u65ad\u7cfb\u7edf\u6838\u5fc3\u6982\u5ff5<\/h5>\n
        \n
      • \u4e2d\u65ad\u8bf7\u6c42：\u5916\u8bbe\u901a\u8fc7\u4e2d\u65ad\u7ebf\u5411 CPU \u53d1\u9001\u8bf7\u6c42\u4fe1\u53f7<\/li>\n
      • \u4e2d\u65ad\u54cd\u5e94：CPU \u5728\u5f53\u524d\u6307\u4ee4\u6267\u884c\u7ed3\u675f\u540e\u68c0\u6d4b\u4e2d\u65ad\u8bf7\u6c42<\/li>\n
      • \u4e2d\u65ad\u670d\u52a1：\u8df3\u8f6c\u81f3\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u5904\u7406\u5916\u8bbe\u8bf7\u6c42<\/li>\n<\/ul>\n

        🔵8.2 \u6307\u4ee4\u5468\u671f<\/span><\/h3>\n

        🔵8.2.1 \u6307\u4ee4\u5468\u671f\u7684\u57fa\u672c\u6982\u5ff5<\/span><\/h4>\n

        \u5b9a\u4e49：\u6267\u884c\u4e00\u6761\u6307\u4ee4\u6240\u9700\u8981\u7684\u5168\u90e8\u65f6\u95f4<\/span>，\u7531\u82e5\u5e72\u673a\u5668\u5468\u671f（CPU \u5468\u671f）\u7ec4\u6210 \u9636\u6bb5\u5212\u5206：<\/p>\n

      • \u53d6\u6307\u5468\u671f：\u4ece\u5185\u5b58\u8bfb\u53d6\u6307\u4ee4\u5230 IR<\/li>\n
      • \u8bd1\u7801\u5468\u671f：\u5206\u6790\u6307\u4ee4\u64cd\u4f5c\u7801\u548c\u5bfb\u5740\u65b9\u5f0f<\/li>\n
      • \u6267\u884c\u5468\u671f：\u5b8c\u6210\u6307\u4ee4\u89c4\u5b9a\u7684\u64cd\u4f5c<\/li>\n
      • \u8bbf\u5b58\u5468\u671f（\u53ef\u9009）：\u8bfb\u5199\u5185\u5b58\u6570\u636e<\/li>\n
      • \u4e2d\u65ad\u5468\u671f（\u53ef\u9009）：\u5904\u7406\u4e2d\u65ad\u8bf7\u6c42<\/li>\n

        \u6d41\u7a0b\u56fe：\u6307\u4ee4\u5468\u671f\u6d41\u7a0b<\/p>\n

        \"\"<\/p>\n<\/p>\n

        🔵8.2.2 \u6307\u4ee4\u5468\u671f\u7684\u6570\u636e\u6d41<\/span><\/h4>\n

        \u793a\u4f8b：\u52a0\u6cd5\u6307\u4ee4\u6570\u636e\u6d41<\/p>\n

      • PC \u2192 \u5185\u5b58\u5730\u5740\u603b\u7ebf（\u53d6\u6307）<\/li>\n
      • \u5185\u5b58\u6570\u636e \u2192 IR（\u6307\u4ee4\u5b58\u5165 IR）<\/li>\n
      • PC \u81ea\u589e \u2192 \u6307\u5411\u4e0b\u4e00\u6761\u6307\u4ee4<\/li>\n
      • IR \u64cd\u4f5c\u7801 \u2192 \u63a7\u5236\u5355\u5143\u8bd1\u7801<\/li>\n
      • \u6e90\u64cd\u4f5c\u6570\u5730\u5740 \u2192 \u5185\u5b58 \/ \u5bc4\u5b58\u5668\u83b7\u53d6\u6570\u636e<\/li>\n
      • ALU \u6267\u884c\u52a0\u6cd5\u8fd0\u7b97 \u2192 \u7ed3\u679c\u5b58\u5165 ACC<\/li>\n

        🔵8.3 \u6307\u4ee4\u6d41\u6c34<\/span><\/h3>\n

        🔵8.3.1 \u6307\u4ee4\u6d41\u6c34\u539f\u7406<\/span><\/h4>\n

        \u6d41\u6c34\u7ebf\u601d\u60f3：\u5c06\u6307\u4ee4\u6267\u884c\u8fc7\u7a0b\u5206\u89e3\u4e3a\u591a\u4e2a\u9636\u6bb5（\u5982\u53d6\u6307 IF\u3001\u8bd1\u7801 ID\u3001\u6267\u884c EX\u3001\u8bbf\u5b58 MEM\u3001\u5199\u56de WB），\u5404\u9636\u6bb5\u5e76\u884c\u5904\u7406\u4e0d\u540c\u6307\u4ee4 \u793a\u4f8b：5 \u7ea7\u6d41\u6c34\u7ebf\u793a\u610f\u56fe<\/p>\n

        \"\"<\/p>\n

        \u8bf4\u660e：\u6bcf\u4e2a\u65f6\u949f\u5468\u671f\u542f\u52a8\u4e00\u6761\u65b0\u6307\u4ee4，\u76f8\u90bb\u6307\u4ee4\u5728\u4e0d\u540c\u9636\u6bb5\u5e76\u884c\u6267\u884c<\/p>\n

        🔵8.3.2 \u5f71\u54cd\u6d41\u6c34\u7ebf\u6027\u80fd\u7684\u56e0\u7d20<\/span><\/h4>\n
      • \u7ed3\u6784\u51b2\u7a81：\u786c\u4ef6\u8d44\u6e90\u7ade\u4e89（\u5982\u540c\u65f6\u8bbf\u95ee\u5185\u5b58）<\/li>\n
      • \u6570\u636e\u51b2\u7a81：\u540e\u7eed\u6307\u4ee4\u4f9d\u8d56\u524d\u5e8f\u6307\u4ee4\u7684\u7ed3\u679c<\/li>\n
      • \u63a7\u5236\u51b2\u7a81：\u5206\u652f\u6307\u4ee4\u5bfc\u81f4\u6d41\u6c34\u7ebf\u65ad\u6d41<\/li>\n

        🔵8.3.3 \u6d41\u6c34\u7ebf\u6027\u80fd<\/span><\/h4>\n

        \u6027\u80fd\u6307\u6807：<\/p>\n

          \n
        • \u541e\u5410\u7387（TP）：\u5355\u4f4d\u65f6\u95f4\u6267\u884c\u7684\u6307\u4ee4\u6570 TP = n \/ (k + n – 1) * f（n \u4e3a\u6307\u4ee4\u6570，k \u4e3a\u9636\u6bb5\u6570，f \u4e3a\u65f6\u949f\u9891\u7387）<\/li>\n
        • \u52a0\u901f\u6bd4（S）：\u6d41\u6c34\u7ebf\u6267\u884c\u65f6\u95f4\u4e0e\u975e\u6d41\u6c34\u7ebf\u6267\u884c\u65f6\u95f4\u7684\u6bd4\u503c<\/li>\n<\/ul>\n

          🔵8.3.4 \u6d41\u6c34\u7ebf\u4e2d\u7684\u591a\u53d1\u6280\u672f<\/span><\/h4>\n
          \u8d85\u6807\u91cf\u6280\u672f<\/h5>\n
            \n
          • \u591a\u4e2a\u6307\u4ee4\u8bd1\u7801\u5668\u548c\u8fd0\u7b97\u5355\u5143<\/li>\n
          • \u793a\u4f8b：\u540c\u65f6\u6267\u884c 2 \u6761\u6307\u4ee4\u7684\u6d41\u6c34\u7ebf<\/li>\n<\/ul>\n

            \/\/ \u6a21\u62df\u8d85\u6807\u91cf\u6d41\u6c34\u7ebf（\u7b80\u5316\u7248）
            \npublic class SuperscalarPipeline {
            \n public void executeInParallel(Instruction inst1, Instruction inst2) {
            \n \/\/ \u5e76\u884c\u8bd1\u7801
            \n decode(inst1);
            \n decode(inst2);
            \n \/\/ \u5e76\u884c\u6267\u884c（\u5047\u8bbeALU1\u548cALU2\u72ec\u7acb）
            \n execute(inst1);
            \n execute(inst2);
            \n }<\/p>\n

            private void decode(Instruction inst) { \/* \u8bd1\u7801\u903b\u8f91 *\/ }
            \n private void execute(Instruction inst) { \/* \u6267\u884c\u903b\u8f91 *\/ }
            \n}<\/p>\n

            class Instruction { \/* \u6307\u4ee4\u7c7b *\/ }<\/p>\n

            🔵8.3.5 \u6d41\u6c34\u7ebf\u7ed3\u6784<\/span><\/h4>\n

            \u5178\u578b\u6d41\u6c34\u7ebf\u7ed3\u6784\u5bf9\u6bd4<\/p>\n\n\u6d41\u6c34\u7ebf\u7c7b\u578b\u9636\u6bb5\u6570\u5178\u578b\u5e94\u7528<\/tr>\n\n\n\n\n
            \u7b80\u5355\u6d41\u6c34\u7ebf<\/td>\n3-5 \u7ea7<\/td>\n\u65e9\u671f CPU（\u5982 80486）<\/td>\n<\/tr>\n
            \u8d85\u6d41\u6c34\u7ebf<\/td>\n6-15 \u7ea7<\/td>\nPentium \u7cfb\u5217<\/td>\n<\/tr>\n
            \u4e71\u5e8f\u6267\u884c\u6d41\u6c34\u7ebf<\/td>\n\u591a\u7ea7<\/td>\n\u73b0\u4ee3 CPU（\u5982\u9177\u777f）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            🔵8.4 \u4e2d\u65ad\u7cfb\u7edf<\/span><\/h3>\n

            🔵8.4.1 \u6982\u8ff0<\/span><\/h4>\n

            \u4e2d\u65ad\u5206\u7c7b：<\/p>\n

              \n
            • \u786c\u4ef6\u4e2d\u65ad：\u6765\u81ea\u5916\u8bbe（\u5982\u952e\u76d8\u3001\u78c1\u76d8）<\/li>\n
            • \u8f6f\u4ef6\u4e2d\u65ad：\u7531\u6307\u4ee4\u89e6\u53d1（\u5982\u7cfb\u7edf\u8c03\u7528）<\/li>\n
            • \u5f02\u5e38：CPU \u5185\u90e8\u9519\u8bef（\u5982\u9664\u6cd5\u6ea2\u51fa）<\/li>\n<\/ul>\n

              \u4e2d\u65ad\u5904\u7406\u6d41\u7a0b：<\/p>\n

            • \u4e2d\u65ad\u8bf7\u6c42 \u2192 2. \u4e2d\u65ad\u5224\u4f18 \u2192 3. \u4e2d\u65ad\u54cd\u5e94 \u2192 4. \u4e2d\u65ad\u670d\u52a1 \u2192 5. \u4e2d\u65ad\u8fd4\u56de<\/li>\n

              🔵8.4.2 \u4e2d\u65ad\u8bf7\u6c42\u6807\u8bb0\u548c\u4e2d\u65ad\u5224\u4f18\u903b\u8f91<\/span><\/h4>\n

              \u6570\u636e\u7ed3\u6784\u6a21\u62df：\u4e2d\u65ad\u8bf7\u6c42\u5bc4\u5b58\u5668<\/p>\n

              \/\/ \u4e2d\u65ad\u8bf7\u6c42\u5bc4\u5b58\u5668（8\u4f4d，\u652f\u63018\u4e2a\u4e2d\u65ad\u6e90）
              \npublic class InterruptRequestRegister {
              \n private int irr; \/\/ \u7528\u6574\u6570\u6a21\u62df8\u4f4d\u5bc4\u5b58\u5668（\u6bcf\u4f4d\u4ee3\u8868\u4e00\u4e2a\u4e2d\u65ad\u6e90）<\/p>\n

              \/\/ \u8bbe\u7f6e\u4e2d\u65ad\u8bf7\u6c42（\u7b2cn\u4f4d\u8bbe\u4e3a1）
              \n public void setRequest(int n) {
              \n if (n >= 0 && n < 8) {
              \n irr |= (1 << n); \/\/ \u4f4d\u8fd0\u7b97\u8bbe\u7f6e\u8bf7\u6c42\u4f4d
              \n System.out.println("\u4e2d\u65ad\u6e90" + n + "\u8bf7\u6c42\u5df2\u767b\u8bb0");
              \n }
              \n }<\/p>\n

              \/\/ \u6e05\u9664\u4e2d\u65ad\u8bf7\u6c42（\u7b2cn\u4f4d\u8bbe\u4e3a0）
              \n public void clearRequest(int n) {
              \n irr &= ~(1 << n);
              \n }
              \n}<\/p>\n

              🔵8.4.3 \u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u5165\u53e3\u5730\u5740\u7684\u5bfb\u627e<\/span><\/h4>\n

              \u5411\u91cf\u4e2d\u65ad\u65b9\u5f0f：<\/p>\n

                \n
              • \u6bcf\u4e2a\u4e2d\u65ad\u6e90\u5bf9\u5e94\u552f\u4e00\u7684\u4e2d\u65ad\u5411\u91cf\u53f7<\/li>\n
              • CPU \u6839\u636e\u5411\u91cf\u53f7\u67e5\u627e\u4e2d\u65ad\u5411\u91cf\u8868\u83b7\u53d6\u670d\u52a1\u7a0b\u5e8f\u5730\u5740<\/li>\n<\/ul>\n

                \u6a21\u62df\u4e2d\u65ad\u5411\u91cf\u8868<\/p>\n

                \/\/ \u4e2d\u65ad\u5411\u91cf\u8868（\u5b58\u50a88\u4e2a\u4e2d\u65ad\u6e90\u7684\u670d\u52a1\u7a0b\u5e8f\u5730\u5740）
                \npublic class InterruptVectorTable {
                \n private int[] vectorTable = new int[8]; \/\/ \u5b58\u50a8\u5730\u5740（\u6a21\u62df\u6574\u6570）<\/p>\n

                \/\/ \u521d\u59cb\u5316\u5411\u91cf\u8868
                \n public InterruptVectorTable() {
                \n for (int i = 0; i < 8; i++) {
                \n vectorTable[i] = 0x1000 + i * 100; \/\/ \u9884\u8bbe\u5730\u5740\u8303\u56f4
                \n }
                \n }<\/p>\n

                \/\/ \u6839\u636e\u5411\u91cf\u53f7\u83b7\u53d6\u670d\u52a1\u7a0b\u5e8f\u5730\u5740
                \n public int getServiceAddress(int vectorNo) {
                \n return vectorTable[vectorNo];
                \n }
                \n}<\/p>\n

                🔵8.4.4 \u4e2d\u65ad\u54cd\u5e94\u548c\u6062\u590d\u73b0\u573a<\/span><\/h4>\n

                \u4e2d\u65ad\u54cd\u5e94\u6b65\u9aa4：<\/p>\n

              • \u5173\u4e2d\u65ad：\u7981\u6b62\u65b0\u7684\u4e2d\u65ad\u8bf7\u6c42<\/li>\n
              • \u4fdd\u5b58\u65ad\u70b9：\u5c06\u5f53\u524d PC \u503c\u5b58\u5165\u5806\u6808<\/li>\n
              • \u8bc6\u522b\u4e2d\u65ad\u6e90：\u83b7\u53d6\u4e2d\u65ad\u5411\u91cf\u53f7<\/li>\n
              • \u8df3\u8f6c\u670d\u52a1\u7a0b\u5e8f：PC \u2190 \u4e2d\u65ad\u5411\u91cf\u5730\u5740<\/li>\n

                \u6062\u590d\u73b0\u573a\u4ee3\u7801\u6a21\u62df<\/p>\n

                \/\/ \u6a21\u62df\u4e2d\u65ad\u73b0\u573a\u4fdd\u5b58\u4e0e\u6062\u590d
                \npublic class InterruptHandler {
                \n private Stack<Integer> stack = new Stack<>(); \/\/ \u6a21\u62df\u5806\u6808<\/p>\n

                \/\/ \u4fdd\u5b58\u73b0\u573a（PC\u3001\u5bc4\u5b58\u5668\u7b49）
                \n public void saveContext(int pc, int acc, int psw) {
                \n stack.push(pc);
                \n stack.push(acc);
                \n stack.push(psw);
                \n System.out.println("\u73b0\u573a\u5df2\u4fdd\u5b58\u81f3\u5806\u6808");
                \n }<\/p>\n

                \/\/ \u6062\u590d\u73b0\u573a
                \n public void restoreContext() {
                \n int psw = stack.pop();
                \n int acc = stack.pop();
                \n int pc = stack.pop();
                \n System.out.println("\u6062\u590dPC=" + pc + ", ACC=" + acc + ", PSW=" + psw);
                \n }
                \n}<\/p>\n

                🔵8.4.5 \u4e2d\u65ad\u5c4f\u853d\u6280\u672f<\/span><\/h4>\n

                \u4f5c\u7528：\u901a\u8fc7\u5c4f\u853d\u5bc4\u5b58\u5668\u9009\u62e9\u6027\u7981\u6b62\u67d0\u4e9b\u4e2d\u65ad\u6e90\u7684\u8bf7\u6c42 \u6a21\u62df\u5c4f\u853d\u5bc4\u5b58\u5668<\/p>\n

                📚\u603b\u7ed3<\/h3>\n

                \"\"<\/p>\n

                \u00a0 \u00a0 \u00a0\u672c\u7ae0\u7cfb\u7edf\u8bb2\u89e3\u4e86 CPU \u7684\u6838\u5fc3\u67b6\u6784\u3001\u6307\u4ee4\u6267\u884c\u673a\u5236\u3001\u6d41\u6c34\u7ebf\u6280\u672f\u548c\u4e2d\u65ad\u7cfb\u7edf\u3002\u901a\u8fc7 Java \u4ee3\u7801\u6a21\u62df\u4e86\u5bc4\u5b58\u5668\u64cd\u4f5c\u3001\u6d41\u6c34\u7ebf\u6267\u884c\u548c\u4e2d\u65ad\u5904\u7406\u7b49\u5173\u952e\u73af\u8282，\u5e2e\u52a9\u8bfb\u8005\u7406\u89e3\u7406\u8bba\u77e5\u8bc6\u4e0e\u5b9e\u9645\u7f16\u7a0b\u7684\u7ed3\u5408\u3002\u5efa\u8bae\u7ed3\u5408\u6559\u6750\u4e2d\u7684\u786c\u4ef6\u7535\u8def\u56fe\u548c\u65f6\u5e8f\u56fe，\u8fdb\u4e00\u6b65\u638c\u63e1 CPU \u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1k\u6b21\uff0c\u70b9\u8d5e29\u6b21\uff0c\u6536\u85cf18\u6b21\u3002\u672c\u6587\u7cfb\u7edf\u4ecb\u7ecd\u4e86CPU\u7684\u6838\u5fc3\u67b6\u6784\u548c\u5173\u952e\u673a\u5236\u3002\u4e3b\u8981\u5185\u5bb9\u5305\u62ec\uff1a CPU\u529f\u80fd\u7ed3\u6784\uff1a\u8be6\u7ec6\u89e3\u6790\u4e86CPU\u7684\u5bc4\u5b58\u5668\u5206\u7c7b\uff08\u7a0b\u5e8f\u63a7\u5236\u7c7b\u3001\u6570\u636e\u5b58\u50a8\u7c7b\u3001\u72b6\u6001\u63a7\u5236\u7c7b\uff09\u3001\u63a7\u5236\u5355\u5143\u548c\u4e2d\u65ad\u7cfb\u7edf\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u5e76\u901a\u8fc7Java\u4ee3\u7801\u6a21\u62df\u4e86\u5bc4\u5b58\u5668\u64cd\u4f5c\u548c\u6307\u4ee4\u6267\u884c\u8fc7\u7a0b\u3002 \u6307\u4ee4\u5468\u671f\u673a\u5236\uff1a\u9610\u8ff0\u4e86\u6307\u4ee4\u6267\u884c\u7684\u5b8c\u6574\u5468\u671f\uff08\u53d6\u6307\u3001\u8bd1\u7801\u3001\u6267\u884c\u3001\u8bbf\u5b58\u3001\u4e2d\u65ad\uff09\uff0c\u4e3e\u4f8b\u8bf4\u660e\u4e86\u52a0\u6cd5\u6307\u4ee4\u7684\u6570\u636e\u6d41\u52a8\u8fc7\u7a0b\u3002 \u6d41\u6c34\u7ebf\u6280\u672f\uff1a\u91cd\u70b9\u8bb2\u89e3\u4e865\u7ea7\u6d41\u6c34\u7ebf\u539f\u7406\u3001\u6027\u80fd\u6307\u6807\uff08\u541e\u5410\u7387\u3001\u52a0\u901f\u6bd4\uff09\u53ca\u591a\u53d1\u6280\u672f\uff08\u5982\u8d85\u6807\u91cf\u6280\u672f\uff09\uff0c\u5e76\u63d0\u4f9b\u4e86\u6d41\u6c34\u7ebf\u7ed3\u6784\u7684\u6a21\u62df\u5b9e\u73b0\u3002 \u4e2d\u65ad\u5904\u7406\u7cfb\u7edf\uff1a\u5b8c\u6574\u63cf\u8ff0\u4e86\u4e2d\u65ad\u5206\u7c7b\uff08\u786c\u4ef6\/\u8f6f\u4ef6\/\u5f02\u5e38\uff09\u3001\u5904<\/p>\n","protected":false},"author":2,"featured_media":42017,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,190,3877],"topic":[],"class_list":["post-42021","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-java","tag-190","tag-3877"],"yoast_head":"\n[\u7279\u6b8a\u5b57\u7b26]\u300a\u8ba1\u7b97\u673a\u7ec4\u6210\u539f\u7406\u300b\u7b2c 8 \u7ae0 - 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