main.lst

freescale 协处理器应用相关实例

  00d8 2703         [3/1]   BEQ   *+5 ;abs = 00dd
  200:        ErrorCount++;
  00da 18628e       [4]     INCW  14,SP
  201:        
  202:              /* write to the EEE */   
  203:     EEE_Int[0] = 0x1001;
  00dd cc1001       [2]     LDD   #4097
  00e0 160000       [4]     JSR   main:0x01c4
  204:              /* and read it */
  205:     temp = EEE_Int[0]; /* this shows that with the EEE disabled it is still possible */
  206:                       /* to write to the EEE-RAM region. However the value is volatile */   
  207:  
  208:    
  209:  
  210:              /* enable writes of EEE records */
  211:     if (FTM.fstat.byte == 0x80)     /* ensure that FTM is operational and error free */
  00e3 f60000       [3]     LDAB  FTM:6
  00e6 c180         [1]     CMPB  #128
  00e8 261c         [3/1]   BNE   *+30 ;abs = 0106
  212:     {
  213:        ftmStat = LaunchFlashCommand(1 ,ENABLE_EEPROM_EMULATION, 0, 0, 0, 0, 0, 0);
  00ea c601         [1]     LDAB  #1
  00ec 37           [2]     PSHB  
  00ed c613         [1]     LDAB  #19
  00ef 37           [2]     PSHB  
  00f0 c7           [1]     CLRB  
  00f1 37           [2]     PSHB  
  00f2 87           [1]     CLRA  
  00f3 3b           [2]     PSHD  
  00f4 3b           [2]     PSHD  
  00f5 3b           [2]     PSHD  
  00f6 3b           [2]     PSHD  
  00f7 4a000000     [7]     CALL  LaunchFlashCommand,PAGE(LaunchFlashCommand)
  00fb 1b8b         [2]     LEAS  11,SP
  00fd 6b80         [2]     STAB  0,SP
  214:        if ((ftmStat & (ACCERR|FPVIOL|MGSTAT1|MGSTAT0)))   /* ensure no errors occured during activation */
  00ff 0f803307     [4]     BRCLR 0,SP,#51,*+11 ;abs = 010a
  215:           Error(ftmStat);
  0103 e680         [3]     LDAB  0,SP
  0105 21           [1]     SKIP1 
  216:     } 
  217:     else
  218:        Error(0);
  0106 c7           [1]     CLRB  
  0107 160000       [4]     JSR   main:0x01d2
  219:  
  220:              
  221:              /* update the EEE */   
  222:     EEE_Int[0] = 0x2002;
  010a cc2002       [2]     LDD   #8194
  010d 160000       [4]     JSR   main:0x01c4
  223:              /* and read it while the EEE system is active i.e. while the record is being updated */
  224:     temp = EEE_Int[0]; /* notice how the variable is stored in EEE-Flash (bottom Memory window) */   
  225:         
  226:              /* turn off the EEE record writing */
  227:     ftmStat = LaunchFlashCommand(1 ,DISABLE_EEPROM_EMULATION, 0, 0, 0, 0, 0, 0);
  0110 57           [1]     ASRB  
  0111 37           [2]     PSHB  
  0112 c614         [1]     LDAB  #20
  0114 37           [2]     PSHB  
  0115 c7           [1]     CLRB  
  0116 37           [2]     PSHB  
  0117 87           [1]     CLRA  
  0118 3b           [2]     PSHD  
  0119 3b           [2]     PSHD  
  011a 3b           [2]     PSHD  
  011b 3b           [2]     PSHD  
  011c 4a000000     [7]     CALL  LaunchFlashCommand,PAGE(LaunchFlashCommand)
  0120 1b8b         [2]     LEAS  11,SP
  0122 6b80         [2]     STAB  0,SP
  228:     if ((ftmStat & (ACCERR|FPVIOL|MGSTAT1|MGSTAT0)))
  0124 0f803303     [4]     BRCLR 0,SP,#51,*+7 ;abs = 012b
  229:        Error(ftmStat);    
  0128 160000       [4]     JSR   main:0x01cd
  230:     
  231:              /* can still read and write the EEE RAM */   
  232:     EEE_Int[0] = 0x3003;  /* notice how the EEE-FLASH remains unaltered */ 
  012b cc3003       [2]     LDD   #12291
  012e 160000       [4]     JSR   main:0x01c4
  233:              /* and read it */
  234:     temp = EEE_Int[0];    
  235:     EEE_Int[0] = 0x4004; /* notice how the tag count (in the DATA1 window - expand the FTM) */ 
  0131 ce4004       [2]     LDX   #16388
  0134 7e0000       [3]     STX   EEE_Int
  236:                          /* remains at one: only one value has to be updated */
  237:              /* and read it */
  238:     temp = EEE_Int[0];    
  0137 fd0000       [3]     LDY   EEE_Int
  013a 6d81         [2]     STY   1,SP
  239:     EEE_Int[0] = 0x5005;
  013c cd5005       [2]     LDY   #20485
  013f 7d0000       [3]     STY   EEE_Int
  240:              /* and read it */
  241:     temp = EEE_Int[0];    
  0142 fc0000       [3]     LDD   EEE_Int
  0145 6c81         [2]     STD   1,SP
  242:     EEE_Int[0] = 0x6006;
  0147 cc6006       [2]     LDD   #24582
  014a 7c0000       [3]     STD   EEE_Int
  243:              /* and read it */
  244:     temp = EEE_Int[0];    
  014d fc0000       [3]     LDD   EEE_Int
  0150 6c81         [2]     STD   1,SP
  245:  
  246:              /* the tag counter should be one because only one record needs updating */  
  247:     temp = FTM.etag;
  0152 fc0000       [3]     LDD   FTM:12
  0155 6c81         [2]     STD   1,SP
  248:  
  249:              /* and now back up the data here */
  250:              /* enable writes of EEE records */
  251:     ftmStat = LaunchFlashCommand(1 ,ENABLE_EEPROM_EMULATION, 0, 0, 0, 0, 0, 0);
  0157 cc1301       [2]     LDD   #4865
  015a 37           [2]     PSHB  
  015b 36           [2]     PSHA  
  015c c7           [1]     CLRB  
  015d 37           [2]     PSHB  
  015e 87           [1]     CLRA  
  015f 3b           [2]     PSHD  
  0160 3b           [2]     PSHD  
  0161 3b           [2]     PSHD  
  0162 3b           [2]     PSHD  
  0163 4a000000     [7]     CALL  LaunchFlashCommand,PAGE(LaunchFlashCommand)
  0167 1b8b         [2]     LEAS  11,SP
  0169 6b80         [2]     STAB  0,SP
  252:     if ((ftmStat & (ACCERR|FPVIOL|MGSTAT1|MGSTAT0)))
  016b 0f803302     [4]     BRCLR 0,SP,#51,*+6 ;abs = 0171
  253:        Error(ftmStat);    
  016f 075c         [4]     BSR   *+94 ;abs = 01cd
  254:     
  255:              /* wait for the EEE store to be completed */
  256:     while(FTM.fstat.bit.mgbusy || FTM.etag ){                    /* wait for EEE to write*/
  0171 1e000008fb   [5]     BRSET FTM:6,#8,*+0 ;abs = 0171
  0176 fc0000       [3]     LDD   FTM:12
  0179 26f6         [3/1]   BNE   *-8 ;abs = 0171
  257:     }  /* notice how only the final value (0x6006) is written to EEE_Flash as this is the latest */
  258:        /* value. the other changes can be ignored */
  259:  
  260:              /* disable the EEE */
  261:     ftmStat = LaunchFlashCommand(1 ,DISABLE_EEPROM_EMULATION, 0, 0, 0, 0, 0, 0);
  017b cc1401       [2]     LDD   #5121
  017e 37           [2]     PSHB  
  017f 36           [2]     PSHA  
  0180 c7           [1]     CLRB  
  0181 37           [2]     PSHB  
  0182 87           [1]     CLRA  
  0183 3b           [2]     PSHD  
  0184 3b           [2]     PSHD  
  0185 3b           [2]     PSHD  
  0186 3b           [2]     PSHD  
  0187 4a000000     [7]     CALL  LaunchFlashCommand,PAGE(LaunchFlashCommand)
  018b 1b8b         [2]     LEAS  11,SP
  018d 6b80         [2]     STAB  0,SP
  262:     if ((ftmStat & (ACCERR|FPVIOL|MGSTAT1|MGSTAT0)))
  018f 0f803302     [4]     BRCLR 0,SP,#51,*+6 ;abs = 0195