isr.asm

来自「spce061单片机的一些程序！C语言和汇编语言都有」· 汇编 代码 · 共 32 行

.TEXT
.INCLUDE	hardware.inc
.INCLUDE	A2000.inc
.INCLUDE	Resource.inc
.DEFINE P_WatchDog_Clear 0x7012

.PUBLIC	_FIQ;
_FIQ:
	PUSH	r1,r4 to [sp];    		//入栈保护
	r1=0x0001;						//清看门狗
	[P_WatchDog_Clear]=r1;
	r1=0x2000;					
	test r1,[P_INT_Ctrl];			//是否为定时器A中断
	jnz L_FIQ_TimerA;
	r1=0x0800;
	test r1,[P_INT_Ctrl];			//是否为定时器B中断       
	jnz L_FIQ_TimerB;
L_FIQ_PWM:
	r1=C_FIQ_PWM;
	[P_INT_Clear]=r1;				//清中断
	POP r1,r4 from[sp];				//恢复现场
	reti;
L_FIQ_TimerA:
	[P_INT_Clear]=r1;				//清中断
	call F_FIQ_Service_SACM_A2000;	//调用A2000中断服务函数
	pop r1,r4 from [sp];			//恢复现场
	reti;
L_FIQ_TimerB:
	[P_INT_Clear]=r1;
	pop r1,r4 from [sp];
	reti;