www.pudn.com > 8255_code_lib.rar > DIOFNC09.C

/*- 
 *  ---------------------------------------------------------------------- 
 *  File        :   DIOFNC09.C 
 *  Creator     :   Blake Miller 
 *  Version     :   01.01.00            February 1991 
 *  Language    :   Microsoft Quick C   Version 2.0 
 *  Purpose     :   Intel 8255 Compatible Digital IO Functions 
 *                  80X86 OUT Instruction Function 
 *  ---------------------------------------------------------------------- 
 *  WARNING: Inline Assembly Language Here! 
 *  ---------------------------------------------------------------------- 
 *  Revision History: 
 *  022891 BVM  :   Change int to short. 
 *  070490 BVM  :   Creation 
 *  ---------------------------------------------------------------------- 
 */ 
 
#define     DIOFNC09_C_DEFINED 
#undef      DIOFNC09_C_DEFINED 
 
void dio_bput ( short, unsigned char); 
 
/*- DIO : Byte Put ---------------------------** 
 *  Write a byte to one of the 80X86 ports. 
 *  Duplicates the library function outp() 
 */ 
void dio_bput (short d_port, unsigned char d_byte) 
	{ 
	_asm    { 
		PUSH    AX 
		PUSH    DX 
 
		MOV     DX, d_port 
		MOV     AL, d_byte 
		OUT     DX, AL 
 
		POP     DX 
		POP     AX 
		} 
	} 
 
/*- 
 *  ---------------------------------------------------------------------- 
 *  END DIOFNC09.C Source File 
 *  ---------------------------------------------------------------------- 
 */