__text_start:
__start:
    002A E5CF      LDI	R28,0x5F
    002B E0D4      LDI	R29,4
    002C BFCD      OUT	0x3D,R28
    002D BFDE      OUT	0x3E,R29
    002E 51C0      SUBI	R28,0x10
    002F 40D0      SBCI	R29,0
    0030 EA0A      LDI	R16,0xAA
    0031 8308      STD	Y+0,R16
    0032 2400      CLR	R0
    0033 E6E0      LDI	R30,0x60
    0034 E0F0      LDI	R31,0
    0035 E010      LDI	R17,0
    0036 36E0      CPI	R30,0x60
    0037 07F1      CPC	R31,R17
    0038 F011      BEQ	0x003B
    0039 9201      ST	R0,Z+
    003A CFFB      RJMP	0x0036
    003B 8300      STD	Z+0,R16
    003C E5E4      LDI	R30,0x54
    003D E0F0      LDI	R31,0
    003E E6A0      LDI	R26,0x60
    003F E0B0      LDI	R27,0
    0040 E010      LDI	R17,0
    0041 35E4      CPI	R30,0x54
    0042 07F1      CPC	R31,R17
    0043 F021      BEQ	0x0048
    0044 95C8      LPM
    0045 9631      ADIW	R30,1
    0046 920D      ST	R0,X+
    0047 CFF9      RJMP	0x0041
    0048 940E005A  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
_delay_ms:
  a                    --> R20
  b                    --> R22
  i                    --> R16
    004B 940E009F  CALL	push_gset2
FILE: E:\ICCAVR\project\AVRMEG~2\icc\006-INT0-LED\main.c
(0001) /*
(0002) 實驗六：
(0003) 	INT0中斷實驗。
(0004) 	1、按鍵中斷實驗。低電平中斷，在中斷中改變PB1電平狀態(tài)。
(0005) 	2、內(nèi)部1 M晶振，程序采用單任務方式，軟件延時。
(0006) 	3、進行此實驗請插上JP1的所有8個短路塊，JP7(LED_EN)短路塊。
(0007) 
(0008) 	AVR  mega16學習板
(0009) 	www.iccavr.com
(0010) 	2006-03-23
(0011) */
(0012) 
(0013) #include "iom16v.h"
(0014) #include <macros.h>
(0015) 
(0016) /*延時函數(shù)*/
(0017) void delay_ms(unsigned char i) {
(0018) 
(0019) 	unsigned char a, b;
(0020) 	for (a = 1; a < i; a++) {
    004D E041      LDI	R20,1
    004E C006      RJMP	0x0055
(0021) 		for (b = 1; b; b++) {
    004F E061      LDI	R22,1
    0050 C001      RJMP	0x0052
    0051 9563      INC	R22
    0052 2366      TST	R22
    0053 F7E9      BNE	0x0051
    0054 9543      INC	R20
    0055 1740      CP	R20,R16
    0056 F3C0      BCS	0x004F
    0057 940E0096  CALL	pop_gset2
    0059 9508      RET
(0022) 			;
(0023) 			}
(0024) 		}
(0025) }
(0026) 
(0027) void main(void) {
(0028) 
(0029) 	DDRA = 0x00;				/*方向輸入*/
_main:
    005A 2422      CLR	R2
    005B BA2A      OUT	0x1A,R2
(0030) 	PORTA = 0xFF;				/*打開上拉*/
    005C EF8F      LDI	R24,0xFF
    005D BB8B      OUT	0x1B,R24
(0031) 	DDRB = 0xFF;				/*方向輸出*/
    005E BB87      OUT	0x17,R24
(0032) 	PORTB = 0xFF;				/*電平設置*/
    005F BB88      OUT	0x18,R24
(0033) 	DDRC = 0x00;
    0060 BA24      OUT	0x14,R2
(0034) 	PORTC = 0xFF;
    0061 BB85      OUT	0x15,R24
(0035) 	DDRD = 0x00;
    0062 BA21      OUT	0x11,R2
(0036) 	PORTD = 0xFF;
    0063 BB82      OUT	0x12,R24
(0037) 
(0038) 	GICR |= (1 << INT0);
    0064 B78B      IN	R24,0x3B
    0065 6480      ORI	R24,0x40
    0066 BF8B      OUT	0x3B,R24
(0039) 	SEI();
    0067 9478      BSET	7
    0068 C006      RJMP	0x006F
(0040) 
(0041) 	while (1) {
(0042) 		delay_ms(200);
    0069 EC08      LDI	R16,0xC8
    006A DFE0      RCALL	_delay_ms
(0043) 		PORTB ^= (1 << 0);		/*PB0電平取反*/
    006B E081      LDI	R24,1
    006C B228      IN	R2,0x18
    006D 2628      EOR	R2,R24
    006E BA28      OUT	0x18,R2
    006F CFF9      RJMP	0x0069
    0070 9508      RET
_Int0:
  i                    --> R16
    0071 922A      ST	R2,-Y
    0072 930A      ST	R16,-Y
    0073 931A      ST	R17,-Y
    0074 938A      ST	R24,-Y
    0075 939A      ST	R25,-Y
    0076 B62F      IN	R2,0x3F
    0077 922A      ST	R2,-Y
(0044) 		}
(0045) }
(0046) 
(0047) #pragma interrupt_handler Int0: 2		/*外部中斷INT0*/
(0048) void Int0(void) {
(0049) 	unsigned int i;
(0050) 	PORTB ^= (1 << 1);			/*PB1電平取反*/
    0078 E082      LDI	R24,2
    0079 B228      IN	R2,0x18
    007A 2628      EOR	R2,R24
    007B BA28      OUT	0x18,R2
(0051) 	i = 1000;					/*加入廷時防按鍵顫動*/
    007C EE08      LDI	R16,0xE8
    007D E013      LDI	R17,3
(0052) 	while (--i);
    007E 01C8      MOVW	R24,R16
    007F 9701      SBIW	R24,1
    0080 018C      MOVW	R16,R24
    0081 3000      CPI	R16,0
    0082 0701      CPC	R16,R17
    0083 F7D1      BNE	0x007E
(0053) 	while ((PIND & (1 << PD2)) == 0);		/*等待按鍵松開*/
    0084 9B82      SBIS	0x10,2
    0085 CFFE      RJMP	0x0084
(0054) 	i = 1000;					/*加入廷時防按鍵顫動*/
    0086 EE08      LDI	R16,0xE8
    0087 E013      LDI	R17,3
(0055) 	while (--i);
FILE: <library>
    0088 01C8      MOVW	R24,R16
    0089 9701      SBIW	R24,1
    008A 018C      MOVW	R16,R24
    008B 3000      CPI	R16,0
    008C 0701      CPC	R16,R17
    008D F7D1      BNE	0x0088
    008E 9029      LD	R2,Y+
    008F BE2F      OUT	0x3F,R2
    0090 9199      LD	R25,Y+
    0091 9189      LD	R24,Y+
    0092 9119      LD	R17,Y+
    0093 9109      LD	R16,Y+
    0094 9029      LD	R2,Y+
    0095 9518      RETI
pop_gset2:
    0096 E0E2      LDI	R30,2
    0097 940C00A5  JMP	pop
push_gset5:
    0099 92FA      ST	R15,-Y
    009A 92EA      ST	R14,-Y
push_gset4:
    009B 92DA      ST	R13,-Y
    009C 92CA      ST	R12,-Y
push_gset3:
    009D 92BA      ST	R11,-Y
    009E 92AA      ST	R10,-Y
push_gset2:
    009F 937A      ST	R23,-Y
    00A0 936A      ST	R22,-Y
push_gset1:
    00A1 935A      ST	R21,-Y
    00A2 934A      ST	R20,-Y
    00A3 9508      RET
pop_gset1:
    00A4 E0E1      LDI	R30,1
pop:
    00A5 9149      LD	R20,Y+
    00A6 9159      LD	R21,Y+
    00A7 FDE0      SBRC	R30,0
    00A8 9508      RET
    00A9 9169      LD	R22,Y+
    00AA 9179      LD	R23,Y+
    00AB FDE1      SBRC	R30,1
    00AC 9508      RET
    00AD 90A9      LD	R10,Y+
    00AE 90B9      LD	R11,Y+
    00AF FDE2      SBRC	R30,2
    00B0 9508      RET
    00B1 90C9      LD	R12,Y+
    00B2 90D9      LD	R13,Y+
    00B3 FDE3      SBRC	R30,3
    00B4 9508      RET
    00B5 90E9      LD	R14,Y+
    00B6 90F9      LD	R15,Y+
    00B7 9508      RET