标题: keil c6.20c ?±????????±à??·?·¨ [打印本页]

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作者: zona    时间: 2004-8-12 15:52     标题: keil c6.20c ?±????????±à??·?·¨

keil c6.20c ?±????????±à??·?·¨

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//<asm.h>
#ifdef ASM
unsigned long shiftR1(register unsigned long);
#else
extern unsigned long shiftR1(register unsigned long);
#endif
//end of asm.h
//<asm.c>
#define ASM
#include <asm.h>
#include <reg52.h>
#pragma OT(4,speed)
unsigned long shiftR1(register unsigned long x)
{
#pragma asm
clr c
mov a,r4
rrc a
mov r4,a

mov a,r5
rrc a
mov r5,a

mov a,r6
rrc a
mov r6,a

mov a,r7
rrc a
mov r7,a

#pragma endasm
return(x);
}
//end of asm.c
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