📄 第八章 dscope for windows使用详解.htm
字号:
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">不区分常量的大、小写。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(1)
</SPAN>整型常量</FONT></H4>
<P class=MsoNormal
style="MARGIN-LEFT: 24pt; TEXT-INDENT: 24pt; LINE-HEIGHT: 21pt"><FONT
size=2><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">分为整型（</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">int</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">），无符号整型（</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">uint,00rd</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">），长整型（</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">long</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">），无符号长整型（</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">Wlong</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">、</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">Word</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">）。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(2)
</SPAN>浮点型常量</FONT></H4>
<P class=MsoNormal
style="TEXT-INDENT: 24pt; LINE-HEIGHT: 21pt"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 12pt"><SPAN
style="mso-spacerun: yes"> </SPAN></SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">与</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">ANSI<SPAN
style="mso-spacerun: yes"> </SPAN>C</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">相同。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(3)
</SPAN>字符串常量</FONT></H4>
<P class=MsoNormal style="LINE-HEIGHT: 21pt"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 12pt"><SPAN
style="mso-spacerun: yes">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">与</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">ANSI<SPAN
style="mso-spacerun: yes"> </SPAN>C</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">相同</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(4)
</SPAN>字符常量</FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT size=2>分为字符型（<SPAN
lang=EN-US>Char）和无符号字符型（Uchar）一种。</SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(5)
</SPAN>行号常数</FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT
size=2>指用户程序中的行号，实际上是个地址</FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(6)
</SPAN>位常量（<SPAN lang=EN-US>Bit）：</SPAN></FONT></H4>
<P class=MsoBodyTextFirstIndent><SPAN lang=EN-US><FONT
size=2>0和1</FONT></SPAN></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(7)
</SPAN>地址常数</FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT
size=2>地址常数的种类很多，地址常数不同于行号常数，行号常数就是一个地址，而地址数被引用时，实际上是取该地址中的数据。</FONT></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>C：代码地址常数，如C：0X0012或0XFF：0X0012</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>D：内部直接寻址地址常数，如D：0X0068或0X00：0X0068</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>I：内部间按寻址地址常数，如I：0X0010或0X00：0X0010</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>X：外部数据空间地址常数，如X：0X0028或0X01：0X0028</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>B：位地址常数，如B：0X20或B：0X24.0</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT size=2>EB：扩展的位地址常数（MCS251专有），<SPAN
style="mso-spacerun: yes"> </SPAN></FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>ED：扩展的数据空间地址常数（MCS251专有）</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>CO：常数空间地址常数（MCS251专有）</FONT></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN-LEFT: 36.75pt"><SPAN
lang=EN-US><FONT
size=2>HC：正常数空间地址常数（MCS251专有）</FONT></SPAN></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(8)
</SPAN>标识符常量</FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT
size=2>即用户源程序中的标号、函数名等，实际上代表某一地址。</FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(9)
</SPAN>用户源程序中定义的常数<SPAN lang=EN-US
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></H4>
<H3 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><A
name=_Toc475103242><FONT size=2><SPAN lang=EN-US
style="FONT-SIZE: 15pt">3. </SPAN>变量</FONT></A></H3>
<P class=MsoBodyTextFirstIndent><SPAN lang=EN-US><FONT
size=2>dScope所支持的变量名或标识符最多可由31个字符组成，第一个字母为A～Z，a～z，下划线或问号，后续字符可为字母、数字、下划线和问号。除CPU变量和系统变量外，dScope不支持全局变量，但可视“define”命令定义的变量为全局变量。</FONT></SPAN></P>
<P class=MsoBodyTextFirstIndent><SPAN lang=EN-US><FONT
size=2>Dscope所支持的变量分为以下几种（变量名称不区分大、小写），支持类型转换：</FONT></SPAN></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(1)
</SPAN>整型变量</FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT size=2>分为整型变量（<SPAN
lang=EN-US>int）、无符号整型变量（uint/word），长整型（Long）
、无符号长整型（Ulong/dword）。</SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(2)
</SPAN>浮点型变量<SPAN lang=EN-US>(float)</SPAN></FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT size=2>与<SPAN
lang=EN-US>ANSI<SPAN style="mso-spacerun: yes">
</SPAN>C相同。</SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(3)
</SPAN>字符型变量<SPAN lang=EN-US>L</SPAN></FONT></H4>
<P class=MsoBodyTextFirstIndent><FONT size=2>分为字符型（<SPAN
lang=EN-US>char）变量和无符号字符型（Uchar）</SPAN></FONT></P>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(4)
</SPAN>位变量（<SPAN lang=EN-US>Bit）</SPAN></FONT></H4>
<H4 style="MARGIN-LEFT: 0cm; TEXT-INDENT: 0cm"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 14pt">(5)
</SPAN>系统变量<SPAN lang=EN-US><SPAN
style="mso-spacerun: yes">
</SPAN></SPAN></FONT></H4>
<P class=MsoBodyTextFirstIndent><SPAN lang=EN-US><FONT
size=2><SPAN
style="mso-spacerun: yes"> </SPAN>dScope自己定义了一系列内部变量，用户可对这些变量进行读或读/写操作，<SPAN
style="mso-spacerun: yes">
</SPAN>可被用户自定义数所引用。</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN-LEFT: 45.25pt; TEXT-INDENT: -21.25pt; LINE-HEIGHT: 21pt; mso-list: l27 level1 lfo40"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 12pt">a. <SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt">Cycles
(Read Only)<O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN-LEFT: 45.25pt; TEXT-INDENT: -21.25pt; LINE-HEIGHT: 21pt; mso-list: skip"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 12pt">32</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">位变量（</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">Ulong</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">），指示当前程序执行已花费的指令周期（</SPAN><SPAN
lang=EN-US style="FONT-SIZE: 12pt">cycle</SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">）。</SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal
style="MARGIN-LEFT: 45.25pt; TEXT-INDENT: -21.25pt; LINE-HEIGHT: 21pt; mso-list: l27 level1 lfo40"><FONT
size=2><SPAN lang=EN-US style="FONT-SIZE: 12pt">b. <SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN lang=EN-US
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