ch43.mht

如果想学习操作系统

color=3D#000000=20
                    size=3D3>J1</FONT></TD></TR>
                    <TR>
                      <TD align=3Dmiddle width=3D50 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>=A3=B2</FONT></TD>
                      <TD align=3Dmiddle width=3D69 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                      size=3D3>48k</FONT></TD>
                      <TD align=3Dmiddle width=3D43 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                      size=3D3>32k</FONT></TD>
                      <TD align=3Dmiddle width=3D41 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>1</FONT></TD>
                      <TD align=3Dmiddle width=3D50 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                    size=3D3>J2</FONT></TD></TR>
                    <TR>
                      <TD align=3Dmiddle width=3D50 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>=A3=B3</FONT></TD>
                      <TD align=3Dmiddle width=3D69 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                      size=3D3>80k</FONT></TD>
                      <TD align=3Dmiddle width=3D43 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                      size=3D3>64k</FONT></TD>
                      <TD align=3Dmiddle width=3D41 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>1</FONT></TD>
                      <TD align=3Dmiddle width=3D50 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                    size=3D3>J3</FONT></TD></TR>
                    <TR>
                      <TD align=3Dmiddle width=3D50 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>=A3=B4</FONT></TD>
                      <TD align=3Dmiddle width=3D69 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                      size=3D3>144k</FONT></TD>
                      <TD align=3Dmiddle width=3D43 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000=20
                      size=3D3>112k</FONT></TD>
                      <TD align=3Dmiddle width=3D41 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>0</FONT></TD>
                      <TD align=3Dmiddle width=3D50 bgColor=3D#00ffff=20
                        height=3D29><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>&nbsp;=20
                        =
</FONT></TD></TR></TBODY></TABLE></CENTER></DIV></TD>
                <TD width=3D80 height=3D150>
                  <DIV align=3Dleft>
                  <TABLE height=3D150 cellSpacing=3D0 cellPadding=3D0 =
width=3D80=20
                  border=3D0>
                    <TBODY>
                    <TR>
                      <TD align=3Dleft></TD></TR>
                    <TR>
                      <TD align=3Dright><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#ff0080 size=3D3>=D7=B4=CC=AC=A3=BD=A3=B1</FONT></PRE></TD></TR>
                    <TR>
                      <TD align=3Dright>
                        <DIV align=3Dcenter>
                        <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#ff0080 =
size=3D3>=B1=ED=CA=BE=D2=D1</FONT></PRE></CENTER></DIV></TD></TR>
                    <TR>
                      <TD align=3Dright>
                        <DIV align=3Dcenter>
                        <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#ff0080 =
size=3D3>=B7=D6=C5=E4</FONT></PRE></CENTER></DIV></TD></TR>
                    <TR>
                      <TD align=3Dleft></TD></TR>
                    <TR>
                      <TD align=3Dleft></TD></TR>
                    <TR>
                      <TD=20
            =
align=3Dleft></TD></TR></TBODY></TABLE></DIV></TD></TR></TBODY></TABLE></=
CENTER></DIV></TD></TR></TBODY></TABLE></CENTER></DIV>
      <DIV align=3Dcenter>
      <CENTER>
      <TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"90%" border=3D0>
        <TBODY>
        <TR>
          <TD width=3D"45%">
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0000 =
size=3D3><STRONG>=B9=CC=B6=A8=B7=D6=C7=F8=CA=BE=D2=E2=CD=BC</STRONG></FON=
T></PRE></CENTER></DIV></TD>
          <TD width=3D"55%">
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0000 =
size=3D3><STRONG>=B9=CC=B6=A8=B7=D6=C7=F8=CB=B5=C3=F7=CA=E9</STRONG></FON=
T></PRE></CENTER></DIV></TD></TR></TBODY></TABLE></CENTER></DIV><PRE><FON=
T face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>        =
=D2=BB=B5=A9=B7=D6=BA=C3=A3=AC=D4=F2=C3=BF=B8=F6=B7=D6=C7=F8=B5=C4=B4=F3=D0=
=A1=B9=CC=B6=A8=B2=BB=D4=D9=B1=E4=BB=AF=A3=AC=C7=D2=B7=D6=C7=F8=B5=C4=B8=F6=
=CA=FD=D2=B2=B2=BB=D4=D9=B8=C4=B1=E4=A1=A3=D2=BB=B8=F6=B7=D6=C7=F8=D6=BB=C4=
=DC</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3> =
   =C8=DD=C4=C9=D2=BB=B5=C0=D7=F7=D2=B5=A1=A3</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>    </FONT><IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/angle.GI=
F" width=3D14><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=B7=D6=C5=E4=CB=E3=B7=A8</STRONG>                       =
                             </FONT><!--webbot bot=3D"ImageMap" =
rectangle=3D"(0,2) (144,32) #%e9%a1%b5%e5%a4%b4" =
src=3D"../images/BACKHEAD.GIF" border=3D"0" alt=3D"BACKHEAD.GIF (2500 =
bytes)" startspan --><MAP name=3DFrontPageMap5><AREA shape=3DRECT =
coords=3D0,2,144,32 =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/pages/ch43.htm=
#=D2=B3=CD=B7"></MAP><A =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter4/pages/ch43.htm/map5"><IMG height=3D33 alt=3D"BACKHEAD.GIF (2500 =
bytes)" isMap =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/BACKHEAD=
.GIF" width=3D145 useMap=3D#FrontPageMap5 border=3D0></A><!--webbot =
bot=3D"ImageMap" endspan i-checksum=3D"2543" --></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>          =
=C8=E7=CF=C2=CD=BC=A3=BA</FONT></PRE>
      <DIV align=3Dcenter>
      <CENTER><PRE><IMG height=3D409 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/ch4302.G=
IF" width=3D347></PRE></CENTER></DIV>
      <DIV align=3Dcenter>
      <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3><STRONG>=B9=CC=B6=A8=B7=D6=C7=F8=B7=D6=C5=E4=C1=F7=B3=CC=CD=BC</=
STRONG></FONT></PRE></CENTER></DIV>
      <DIV align=3Dright><PRE><!--webbot bot=3D"ImageMap" =
rectangle=3D"(0,1) (144,32) #%e9%a1%b5%e5%a4%b4" =
src=3D"../images/BACKHEAD.GIF" border=3D"0" alt=3D"BACKHEAD.GIF (2500 =
bytes)" startspan --><MAP name=3DFrontPageMap6><AREA shape=3DRECT =
coords=3D0,1,144,32 =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/pages/ch43.htm=
#=D2=B3=CD=B7"></MAP><A =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter4/pages/ch43.htm/map6"><IMG height=3D33 alt=3D"BACKHEAD.GIF (2500 =
bytes)" isMap =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/BACKHEAD=
.GIF" width=3D145 useMap=3D#FrontPageMap6 border=3D0></A><!--webbot =
bot=3D"ImageMap" endspan i-checksum=3D"2736" --></PRE></DIV><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>    </FONT><IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/angle.GI=
F" width=3D14><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=BB=D8=CA=D5=CB=E3=B7=A8</STRONG></FONT></PRE><PRE><FONT=
 face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>          =
=D6=BB=D0=E8=BD=AB</FONT><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3>=B7=D6=C7=F8=CB=B5=C3=F7=B1=ED</FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 =
size=3D3>=D6=D0=CF=E0=D3=A6=B5=C4=B7=D6=C7=F8=B5=C4=D5=BC=D3=D0=B1=EA=D6=BE=
=CE=BB=D6=C3=B3=C9=A1=B00=A1=B1=BC=B4=BF=C9=A1=A3</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>    </FONT><IMG height=3D15 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/angle.GI=
F" width=3D14><FONT face=3D=CB=CE=CC=E5 color=3D#800080 =
size=3D3><STRONG>=B9=CC=B6=A8=B7=D6=C7=F8=B5=C4=D3=C5=C8=B1=B5=E3</STRONG=
></FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>   =
       =
=C4=DA=B4=E6=B7=D6=C5=E4=A1=A2=BB=D8=CA=D5=CB=E3=B7=A8=BC=F2=B5=A5=A3=AC=C8=
=DD=D2=D7=CA=B5=CF=D6=A1=A3</FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#ff0080 size=3D3>=A3=A8=D3=C5=B5=E3=A3=A9</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>          =
=D6=F7=B4=E6=BF=D5=BC=E4=C0=FB=D3=C3=C2=CA=B2=BB=B8=DF=A3=AC=C8=DD=D2=D7=D4=
=EC=B3=C9</FONT><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3>=C4=DA=C1=E3=CD=B7</FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>=A1=A3</FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#ff0080 =
size=3D3>=A3=A8=C8=B1=B5=E3=A3=A9</FONT></PRE></TD></TR></TBODY></TABLE>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"90%" border=3D0>
  <TBODY>
  <TR>
    <TD width=3D"100%"><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3>
      <DIV align=3Dright><PRE><A name=3D=C4=DA=C8=DD2></A><!--webbot =
bot=3D"ImageMap" rectangle=3D"(1,1) (144, 32)  #%e9%a1%b5%e5%a4%b4" =
src=3D"../images/BACKHEAD.GIF" border=3D"0" startspan --><MAP =
name=3DFrontPageMap7><AREA shape=3DRECT coords=3D1,1,144,32 =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/pages/ch43.htm=
#=D2=B3=CD=B7"></MAP><A =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter4/pages/ch43.htm/map7"><IMG height=3D33 isMap =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/BACKHEAD=
.GIF" width=3D145 useMap=3D#FrontPageMap7 border=3D0></A><!--webbot =
bot=3D"ImageMap" endspan i-checksum=3D"61333" =
--></PRE></DIV></FONT></TD></TR>
  <TR>
    <TD width=3D"100%"><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3><IMG height=3D25 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/EYEBALL.=
GIF" width=3D25> <IMG height=3D36 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/t4302.gi=
f" width=3D118></FONT></PRE></TD></TR>
  <TR>
    <TD width=3D"100%"><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3>        </FONT><FONT face=3D=CB=CE=CC=E5 color=3D#ff0000 =
size=3D5><STRONG>=B6=AF</STRONG></FONT><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 =
size=3D3>=CC=AC=B5=D8=BB=AE=B7=D6=C4=DA=B4=E6=A1=A3=BC=B4=D4=DA=D7=F7=D2=B5=
=D4=DA=D7=B0=C8=EB=C4=DA=B4=E6=CA=B1=B0=D1=BF=C9=D3=C3=C4=DA=B4=E6=A1=B0=C7=
=D0=B3=F6=A1=B1=D2=BB=B8=F6=C1=AC=D0=F8=B5=C4=C7=F8=D3=F2=B7=D6=C5=E4=B8=F8=
</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>    =
=B8=C3=D7=F7=D2=B5=A3=AC=C7=D2=B7=D6=C7=F8=B4=F3=D0=A1=D5=FD=BA=C3=CA=CA=BA=
=CF=D7=F7=D2=B5=B5=C4=D0=E8=D2=AA=A1=A3</FONT></PRE><PRE><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>        =
=CE=AA=C1=CB=CA=B5=CF=D6=B6=AF=CC=AC=B7=D6=C5=E4=A3=AC=CF=B5=CD=B3=C9=E8=C1=
=A2</FONT><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3>=BF=D5=CF=D0=B7=D6=C7=F8=C1=B4=B1=ED</FONT><FONT =
face=3D=CB=CE=CC=E5 color=3D#000000 size=3D3>=A3=BA</FONT></PRE>
      <DIV align=3Dcenter>
      <CENTER>
      <TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"91%" border=3D0>
        <TBODY>
        <TR>
          <TD width=3D"33%">
            <DIV align=3Dright><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3><IMG height=3D116 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/ch4303.G=
IF" width=3D174></FONT></PRE></DIV>
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3><STRONG>=CE=B4=B7=D6=C5=E4=B7=D6</STRONG></FONT></PRE></CENTER><=
/DIV>
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3><STRONG>=C7=F8=B5=C4=B1=DF=BD=E7=B1=EA=D6=BE</STRONG></FONT></PR=
E></CENTER></DIV></TD>
          <TD width=3D"27%">
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3><IMG height=3D118 =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter4/images/ch4304.G=
IF" width=3D145></FONT></PRE></CENTER></DIV>
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3><STRONG>=D2=D1=B7=D6=C5=E4=B7=D6</STRONG></FONT></PRE></CENTER><=
/DIV>
            <DIV align=3Dcenter>
            <CENTER><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#ff0080 =
size=3D3><STRONG>=C7=F8=B5=C4=B1=DF=BD=E7=B1=EA=D6=BE</STRONG></FONT></PR=
E></CENTER></DIV></TD>
          <TD width=3D"40%"><PRE><FONT face=3D=CB=CE=CC=E5 =
color=3D#000000 size=3D3>    =
=C3=BF=B8=F6=BF=D5=CF=D0=BF=E9=B5=C4=C7=B0=BA=F3=C1=BD=B8=F6=B5=A5=D4=AA=A3=
=AC</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 color=3D#000000 =
size=3D3>=B7=C5=D6=C3=B1=D8=D2=AA=B5=C4=CB=B5=C3=F7=D0=C5=CF=A2=BA=CD=D6=B8=
=D5=EB=A1=A3=CF=B5=CD=B3</FONT></PRE><PRE><FONT face=3D=CB=CE=CC=E5 =