system.asm

spce061单片机的一些程序！C语言和汇编语言都有

//============================================================
//	文件名称：	system.asm
//	功能描述：	端口操作函数
//	维护记录：	2005-10-14	v1.0
//============================================================

.INCLUDE SPCE061A.inc
.PUBLIC _SP_Export; 
.PUBLIC	_SP_Import;
.PUBLIC _SP_Init_IOB;
.PUBLIC _SP_Init_IOA;

.CODE
////////////////////////////////////////////////////////////////// 
//
//////////////////////////////////////////////////////////////////    
_SP_Init_IOA: .PROC
		PUSH BP,BP TO [SP];
        BP = SP + 1;
		PUSH R1,R1 TO [SP];
		R1 = [BP+3];						// Port direction
		[P_IOA_Dir] = R1;
		R1 = [BP+4];
		[P_IOA_Data] = R1;
		R1 = [BP+5];
		[P_IOA_Attrib] = R1;
		
		POP R1,R1 FROM [SP];
        POP BP,BP FROM [SP];
        RETF;
		.ENDP

////////////////////////////////////////////////////////////////// 
// SP_Inti_IOB
//////////////////////////////////////////////////////////////////    

_SP_Init_IOB: .PROC
		PUSH BP,BP TO [SP];
        BP = SP + 1;
		PUSH R1,R1 TO [SP];
		R1 = [BP+3];						// Port direction
		[P_IOB_Dir] = R1;
		R1 = [BP+4];
		[P_IOB_Data] = R1;
		R1 = [BP+5];
		[P_IOB_Attrib] = R1;
		
		POP R1,R1 FROM [SP];
        POP BP,BP FROM [SP];
        RETF;
		.ENDP



_SP_Import: .PROC
        PUSH BP,BP TO [SP];
        BP = SP + 1;
		PUSH R1,R2 TO [SP];
		R1 = [BP+3]; 						// Port Number
		R2 = [BP+4]; 						// Data Buffer Pointer
		R1 = [R1] ;
		[R2] = R1 ;
		POP R1,R2 FROM [SP];
        POP BP,BP FROM [SP];
        RETF;
		.ENDP

_SP_Export: .PROC
        PUSH BP,BP TO [SP];
        BP = SP + 1;
		PUSH R1,R2 TO [SP];
		R1 = [BP+3]; 						// Port Number
		R2 = [BP+4]; 						// Value
		[R1] = R2 ;
		POP R1,R2 FROM [SP];
        POP BP,BP FROM [SP];
        RETF;        
 		.ENDP