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STEP 7 中可能的寻址方式   …..........................................................................................  2
变量直接寻址  ……...............................................................................................  3
DB中地址标识符直接寻址  ................................................................................  4
在程序中分析DB信息   ....................................................................................  5
存储器间接寻址  ….....................................................................................................  6
用于存储器间接寻址的指针结构  .................................................................  7
存储器间接寻址的特性  ……..................................................................  8
间接寻址示例  ….................................................................................................  9
练习4.1：用间接寻址的方法进行循环编程  ……..................................................  10
内部区域，寄存器间接寻址  ……............................................................................  11
交叉区域，寄存器间接寻址  …………...................................................................  12
用于装载地址寄存器的指令  ................................................................................  13
其它用于地址寄存器的指令  ....................................................................................  14
寄存器间接寻址的特性  ….....................................................................  15
练习4.2：用寄存器间接寻址的方法进行循环编程  …….....................................  16
POINTER类型和ANY类型数据的块参数   .................................................................  17
POINTER类型的结构和参数赋值  ...................................................................  18
ANY数据类型的结构  .................................................................................................  19
ANY数据类型参数赋值  …….......................................................................  20
ANY参数类型间接赋值  ……................................................................  21
评估ANY型指针传递  ……………...............................................................................  22
练习4.3：用于求和及计算平均值的功能  …..................................................  23