8051指令.htm

51 bian cheng bang zhu

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  <p class=MsoNormal><span lang=EN-US><a href="#ANL2">SWAP</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>高低半字节交换</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#JMP2">LCALL</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>长调用子程序</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#ADD">ADD</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>加法</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#JMP2">RET</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>子程序返回</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#ADD">ADDC</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>带进位加法</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#JMP2">RETI</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>中断子程序返回</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#ADD">SUBB</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>带进位减法</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#JMP2">NOP</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>空操作</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#ADD2">INC</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>加</span><span lang=EN-US>1</span></p>
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  <p class=MsoNormal><span lang=EN-US><a href="#ADD2">DEC</a></span></p>
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  <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>减</span><span lang=EN-US>1</span></p>
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<p class=MsoNormal><span style='font-size:14.0pt;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";color:red'>指令表：</span><span
lang=EN-US style='font-size:14.0pt;color:red'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US>direct<span class=GramE>—<span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>内部</span></span>RAM</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US>8</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>位地址，表示直接单元寻址，范围为片内</span><span
lang=EN-US>RAM 00H~7FH</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>及</span><span
lang=EN-US>SFR</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>。</span></p>

<p class=MsoNormal><span lang=EN-US>#<a name=DATA></a>DATA—8</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>位立即数。</span></p>

<p class=MsoNormal><span lang=EN-US>#DATA16—16</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>位目的地址。</span></p>

<p class=MsoNormal><span lang=EN-US>ADDR11—11</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>位目的地址。</span></p>

<p class=MsoNormal><span lang=EN-US>REL—</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>带符号的</span><span
lang=EN-US>8</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>位偏移地址。</span></p>

<p class=MsoNormal><span lang=EN-US>DPTR—</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>数据指针。</span></p>

<p class=MsoNormal><span lang=EN-US>BIT<span class=GramE>—<span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>位地址</span></span></span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>。</span></p>

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  <p class=MsoNormal align=center style='text-align:center'><a name=MOV><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>数据传送指令</span></a></p>
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  padding:0cm 5.4pt 0cm 5.4pt;height:11.75pt'>
  <p class=MsoNormal align=center style='text-align:center'><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>助记符</span></p>
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  <td width=135 rowspan=2 style='width:101.55pt;border-top:none;border-left:
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  <p class=MsoNormal align=center style='text-align:center'><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>指令功能</span></p>
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  <p class=MsoNormal align=center style='text-align:center'><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>机器代码</span></p>
  <p class=MsoNormal align=center style='text-align:center'><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>（二进制）</span></p>
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  <p class=MsoNormal align=center style='text-align:center'><span class=GramE><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>对标志位</span></span><span style='font-family:宋体;mso-ascii-font-family:
  "Times New Roman";mso-hansi-font-family:"Times New Roman"'>影响</span></p>
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  <p class=MsoNormal align=center style='text-align:center'><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>字节</span></p>
  <p class=MsoNormal align=center style='text-align:center'><span
  style='font-family:宋体;mso-ascii-