memswap32.c

在51下的外挂硬盘和FLASH的MP3方案程序以及原理图

#ifndef _COMMON_DEFINE
 #include "COMMON.c"
#endif

DWORD MEMSwap32(DWORD value);

DWORD MEMSwap32(DWORD value)
{
	data DWORD rval;

	((unsigned char *) &rval) [0] = ((unsigned char *) &value) [3];
	((unsigned char *) &rval) [1] = ((unsigned char *) &value) [2];
	((unsigned char *) &rval) [2] = ((unsigned char *) &value) [1];
	((unsigned char *) &rval) [3] = ((unsigned char *) &value) [0];
 	return (rval);
}