www.pudn.com > VOICE.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口置低电平 
	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 
 
.END