fiq.asm

悬挂绘图系统（2005年全国电子设计大赛题目）基于凌阳单片机

.PUBLIC _FIQ
//...............................................
.EXTERNAL _BSR_FIQ_Routine
.EXTERNAL __gIsStopRecog //变量值 = 0 辨识器忙
						 //       = 1 辨识器停止
//.EXTERNAL	F_Key_Scan;						 

.PUBLIC _BREAK
.EXTERNAL _PlayFlag
//..................................................

.INCLUDE A2000.inc;
.INCLUDE resource.inc
.INCLUDE hardware.inc

.TEXT
_FIQ:
	push R1,R4 to [SP]
	R1 = [P_INT_Ctrl]
	R1 &= 0x2000
	jz ?notTimerA						//当不为TIQ_TMA，则转
						//返回中断
?BSR_NotBusy:							//放音处理

							//[_PlayFlag]为1则是播放2000
					
?Play2000:								//2000播放子程序
	call F_FIQ_Service_SACM_A2000;
?BSR_Busy:								//返回中断
	R1 = 0x2000
	[P_INT_Clear] = R1
	pop	R1,R4 from [SP];
	reti;
?notTimerA:
	R1 = 0x8800;
    [P_INT_Clear] = R1;
	pop	R1,R4 from [SP];
	reti;

L_FIQ_TimerB:
    POP R1,R5 FROM[SP];
    RETI;
L_FIQ_PWM:                                     
   [P_INT_Clear] = R1;
   POP R1,R5 FROM[SP];
   RETI;
L_FIQ_TimerA:
   [P_INT_Clear] = R1;
   POP R1,R5 FROM[SP];
   RETI;

_BREAK:        
    PUSH R1,R4 TO [SP];
    POP R1,R4 FROM[SP];
    RETI;

.END