www.pudn.com > SDfx.rar > initIO.asm

.PUBLIC 	_InitIO 
.PUBLIC 	_ShowRes 
.PUBLIC 	_ClearWatchDog 
 
.DEFINE 	Port_IOA_Attrib 		0x7003 
.DEFINE 	Port_IOA_Dir 			0x7002 
.DEFINE 	Port_IOA_Data 			0x7000 
 
.DEFINE 	Port_IOB_Attrib 		0x7008 
.DEFINE 	Port_IOB_Dir 			0x7007 
.DEFINE 	Port_IOB_Data 			0x7005 
 
.CODE 
 
_ClearWatchDog: .PROC 
 push r1 to [SP] 
 r1 = 0x0001 
 [0x7012] = r1 
 pop r1 from [SP] 
 retf 
.ENDP 
 
_ShowRes: .PROC 
	push r1, r5 to [SP] 
	r5 = SP + 5 
	r4 = [r5+3]				 
	[0x7005] = r4 
	pop r1, r5 from [SP] 
	retf 
.ENDP 
 
_InitIO: .PROC 
	r1=0xffff 
	[Port_IOB_Attrib] = r1		//B口设置为同向输出 
	[Port_IOB_Dir] = r1			 
	//r1 = 0 
	[Port_IOB_Data] = r1        //B口置高电平 
	r1=0xffff 
	[Port_IOA_Attrib] = r1		//A口设置为同向输出 
	[Port_IOA_Dir] = r1			 
	r1 = 0xffff 
	[Port_IOA_Data] = r1        //A口置高电平 
	retf 
.ENDP 
 
.PUBLIC _LED_RED_ON 
_LED_RED_ON: .PROC 
    r1 = [Port_IOB_Data] 
    r1 = 0xfffe; 
    [Port_IOB_Data] = r1; 
   retf 
.ENDP 
 
.PUBLIC _LED_RED_OFF 
_LED_RED_OFF: .PROC 
    r1 = [Port_IOB_Data] 
    r1 = 0xffff; 
    [Port_IOB_Data] = r1; 
   retf    
.ENDP 
.PUBLIC _LED_GRE_ON 
_LED_GRE_ON: .PROC 
    r1 = [Port_IOB_Data] 
    r1 = 0xfffd; 
    [Port_IOB_Data] = r1; 
   retf 
.ENDP 
 
.PUBLIC _LED_GRE_OFF 
_LED_GRE_OFF: .PROC 
    r1 = [Port_IOB_Data] 
    r1 = 0xffff; 
    [Port_IOB_Data] = r1; 
   retf    
.ENDP 
.END