max539a.lst

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A51 MACRO ASSEMBLER  MAX539A                                                              08/10/2007 11:45:18 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN MAX539A.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE MAX539A.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;/* 这是被CALL539.C调用的MAX539汇编程序，文件名为MAX539A.ASM      */
                       2     ;/* 功能：本程序作用是实现MAX539芯片的D/A转换。                   */
                       3     
                       4        NAME MAX539A
                       5        ?PR?_a_func?MAX539A     SEGMENT CODE
                       6        ?DT?_a_func?MAX539A     SEGMENT DATA OVERLAYABLE
                       7        ?DT?MAX539A             SEGMENT DATA
                       8     
                       9        PUBLIC   chai
                      10        PUBLIC   ?_a_func?BYTE
                      11        PUBLIC    _a_func
----                  12        RSEG  ?DT?_a_func?MAX539A
0000                  13              ?_a_func?BYTE:
0000                  14              data_addr:DS 2
----                  15        RSEG  ?DT?MAX539A
0000                  16              chai:     DS 1
----                  17        RSEG  ?PR?_a_func?MAX539A
0000                  18              _a_func:
                      19     
  0090                20     SI               EQU P1.0
  0091                21     SCK              EQU P1.1
  0092                22     CS               EQU P1.2
  0093                23     SO               EQU P1.3
                      24     
0000 8F00     F       25                      MOV data_addr,R7   ;R6和R7中放传递进来的整型参