VprogTOP .equ 0D0000H    ;
SB_Base  .equ 00122AH    ;
FB_Base  .equ 000500H    ;
;==============D0000==========================================
 .section prog,code          
 .org  VprogTOP
 .SB   SB_Base
 .FB   FB_Base
          LDC       #351EH,ISP                                             
          LDC       #251EH,SP                                             
          LDC       #000FH,INTBH                                            
          LDC       #0FEDCH,INTBL                                          
          LDC       #122AH,SB                                               
          LDC       #0500H,FB                                               
 _init:         
          MOV.B:Z   #0,012CAH               ;B7CA12        
          MOV.B     #0,012CAH                ;B7CA12
.end
源码如上，其他设置全部默认，使用三菱hew开发环境，
结果MOV.B:Z   #0,012CAH  编译出来的机器代码不是B7CA12；

然后将
 .SB   SB_Base
 .FB   FB_Base
          LDC       #122AH,SB                                               
          LDC       #0500H,FB   
这个四条指令取消掉后，编译完全正确，请汇编高手指点一下！
汇编环境
CPU SERIES : M16C/60
TOOLCHAIN NAME : Renesas M16C Standard Toolchain
TOOLCHAIN VERSION : 5.30.02