delay.a51

压缩包里包括的５１的Ｃ与汇编的混合编程

?PR?DELAY100 SEGMENT CODE; //  在程序存储区中定义段
PUBLIC DELAY100, _DELAY;     //声明函数
RSEG ?PR?DELAY100;    //函数可被连接器放置在任何地方
;RSEG ?PR?_DELAY?DELAY
;I2C_DT SEGMENT DATA
;I2C_PR SEGMENT CODE
;RSEG I2C_DT
;STACKSAVE:DS 1 
;RSEG I2C_PR 
DELAY100: 
  MOV R7,#10
DEL:      
  MOV R6,#20
  DJNZ R6,$
  DJNZ R7,DEL
  RET

;?PR?_DELAY?DELAY     SEGMENT CODE 
_DELAY:
       DJNZ R4,$
       DJNZ R5,$
       DJNZ R7,$
       RET   
END