第二章.htm

清华大学出版得计算机系统结构得答案

<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p>&nbsp;</o:p></SPAN></P>
<P class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2.10 
</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">解：</SPAN></B><B 
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN-LEFT: 21.25pt"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">要点：指令数由</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">256</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">减少到</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">64</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">，减少了两位指令码。</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21.25pt"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">在</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">A</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">处理机中所占的空间为：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21.25pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN>M<SUB>A</SUB> = 1000*32 + 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">（</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">1000*2*32</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">）</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">/8 
= 40000bit <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21.25pt"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">在</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">B</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">处理机中所占的空间：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">39000bit<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 21.25pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN>M<SUB>B</SUB> = 1000*30 + 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">（</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">1000*2*36</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">）</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">/8 
= 39000bit <o:p></o:p></SPAN></P>
<P class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p>&nbsp;</o:p></SPAN></B></P><B 
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><BR 
style="PAGE-BREAK-BEFORE: always" clear=all></SPAN></B>
<P class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2.13 
</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">解：</SPAN></B><B 
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></B></P>
<TABLE class=MsoNormalTable 
style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-border-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext" 
cellSpacing=0 cellPadding=0 border=1>
  <TBODY>
  <TR>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 59.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt" 
    vAlign=top width=79>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">指令</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">序号</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 111pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" 
    vAlign=top width=148>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">出现</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">的概率</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 85.2pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" 
    vAlign=top width=114>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">Huffman<o:p></o:p></SPAN></P>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">编码法</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 85.25pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" 
    vAlign=top width=114>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2/8</SPAN><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">扩展</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">编码法</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 85.25pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" 
    vAlign=top width=114>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">3/7</SPAN><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">扩展</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">编码法</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 59.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=79>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">I1<o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 111pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=148>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">0.25<o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 85.2pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=114>
      <P class=MsoNormal><SPAN lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">00<o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 85.25pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=114>
      <P class=MsoNormal><SPAN lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">00<o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 85.25pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=114>
      <P class=MsoNormal><SPAN lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">00<o:p></o:p></SPAN></P></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 59.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=79>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">I2<o:p></o:p></SPAN></P></TD>
    <TD 
    style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 111pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
    vAlign=top width=148>
      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso