给出具体的几个汇编源代码.相信您看过之后对汇编语言编程会有所了解.
源代码在线查看： avrdpa.lst
AVRASM ver. 1.30 AVRDPA.ASM Mon Dec 03 15:21:03 2001
.include "8535def.inc"
;***************************************************************************
;* A P P L I C A T I O N N O T E F O R T H E A V R F A M I L Y
;*
;* Number :AVR000
;* File Name :"8535def.inc"
;* Title :Register/Bit Definitions for the AT90S8535
;* Date :99.01.28
;* Version :1.30
;* Support telephone :+47 72 88 43 88 (ATMEL Norway)
;* Support fax :+47 72 88 43 99 (ATMEL Norway)
;* Support E-mail :avr@atmel.com
;* Target MCU :AT90S8535
;*
;* DESCRIPTION
;* When including this file in the assembly program file, all I/O register
;* names and I/O register bit names appearing in the data book can be used.
;* In addition, the six registers forming the three data pointers X, Y and
;* Z have been assigned names XL - ZH. Highest RAM address for Internal
;* SRAM is also defined
;*
;* The Register names are represented by their hexadecimal address.
;*
;* The Register Bit names are represented by their bit number (0-7).
;*
;* Please observe the difference in using the bit names with instructions
;* such as "sbr"/"cbr" (set/clear bit in register) and "sbrs"/"sbrc"
;* (skip if bit in register set/cleared). The following example illustrates
;* this:
;*
;* in r16,PORTB ;read PORTB latch
;* sbr r16,(1 ;* out PORTB,r16 ;output to PORTB
;*
;* in r16,TIFR ;read the Timer Interrupt Flag Register
;* sbrc r16,TOV0 ;test the overflow flag (use bit#)
;* rjmp TOV0_is_set ;jump if set
;* ... ;otherwise do something else
;***************************************************************************
;***** Specify Device
.device AT90S8535
;***** I/O Register Definitions
.equ SREG =$3f
.equ SPH =$3e
.equ SPL =$3d
.equ GIMSK =$3b
.equ GIFR =$3a
.equ TIMSK =$39
.equ TIFR =$38
.equ MCUCR =$35
.equ MCUSR =$34
.equ TCCR0 =$33
.equ TCNT0 =$32
.equ TCCR1A =$2f
.equ TCCR1B =$2e
.equ TCNT1H =$2d
.equ TCNT1L =$2c
.equ OCR1AH =$2b
.equ OCR1AL =$2a
.equ OCR1BH =$29
.equ OCR1BL =$28
.equ ICR1H =$27
.equ ICR1L =$26
.equ TCCR2 =$25
.equ TCNT2 =$24
.equ OCR2 =$23
.equ ASSR =$22
.equ WDTCR =$21
.equ EEARH =$1f
.equ EEARL =$1e
.equ EEDR =$1d
.equ EECR =$1c
.equ PORTA =$1b
.equ DDRA =$1a
.equ PINA =$19
.equ PORTB =$18
.equ DDRB =$17
.equ PINB =$16
.equ PORTC =$15
.equ DDRC =$14
.equ PINC =$13
.equ PORTD =$12
.equ DDRD =$11
.equ PIND =$10
.equ SPDR =$0f
.equ SPSR =$0e
.equ SPCR =$0d
.equ UDR =$0c
.equ USR =$0b
.equ UCR =$0a
.equ UBRR =$09
.equ ACSR =$08
.equ ADMUX =$07
.equ ADCSR =$06
.equ ADCH =$05
.equ ADCL =$04
;***** Bit Definitions
.equ EXTRF =1
.equ PORF =0
.equ INT1 =7
.equ INT0 =6
.equ INTF1 =7
.equ INTF0 =6
.equ OCIE2 =7
.equ TOIE2 =6
.equ TICIE1 =5
.equ OCIE1A =4
.equ OCIE1B =3
.equ TOIE1 =2
.equ TOIE0 =0
.equ OCF2 =7
.equ TOV2 =6
.equ ICF1 =5
.equ OCF1A =4
.equ OCF1B =3
.equ TOV1 =2
.equ TOV0 =0
.equ SE =6
.equ SM1 =5
.equ SM0 =4
.equ ISC11 =3
.equ ISC10 =2
.equ ISC01 =1
.equ ISC00 =0
.equ CS02 =2
.equ CS01 =1
.equ CS00 =0
.equ COM1A1 =7
.equ COM1A0 =6
.equ COM1B1 =5
.equ COM1B0 =4
.equ PWM11 =1
.equ PWM10 =0
.equ ICNC1 =7
.equ ICES1 =6
.equ CTC1 =3
.equ CS12 =2
.equ CS11 =1
.equ CS10 =0
.equ PWM2 =6
.equ COM21 =5
.equ COM20 =4
.equ CTC2 =3
.equ CS22 =2
.equ CS21 =1
.equ CS20 =0
.equ AS2 =3
.equ TCN2UB =2
.equ OCR2UB =1
.equ TCR2UB =0
.equ WDDE =4
.equ WDE =3
.equ WDP2 =2
.equ WDP1 =1
.equ WDP0 =0
.equ EERIE =3
.equ EEMWE =2
.equ EEWE =1
.equ EERE =0
.equ PA7 =7
.equ PA6 =6
.equ PA5 =5
.equ PA4 =4
.equ PA3 =3
.equ PA2 =2
.equ PA1 =1
.equ PA0 =0
.equ DDA7 =7
.equ DDA6 =6
.equ DDA5 =5
.equ DDA4 =4
.equ DDA3 =3
.equ DDA2 =2
.equ DDA1 =1
.equ DDA0 =0
.equ PINA7 =7
.equ PINA6 =6
.equ PINA5 =5
.equ PINA4 =4
.equ PINA3 =3
.equ PINA2 =2
.equ PINA1 =1
.equ PINA0 =0
.equ PB7 =7
.equ PB6 =6
.equ PB5 =5
.equ PB4 =4
.equ PB3 =3
.equ PB2 =2
.equ PB1 =1
.equ PB0 =0
.equ DDB7 =7
.equ DDB6 =6
.equ DDB5 =5
.equ DDB4 =4
.equ DDB3 =3
.equ DDB2 =2
.equ DDB1 =1
.equ DDB0 =0
.equ PINB7 =7
.equ PINB6 =6
.equ PINB5 =5
.equ PINB4 =4
.equ PINB3 =3
.equ PINB2 =2
.equ PINB1 =1
.equ PINB0 =0
.equ PC7 =7
.equ PC6 =6
.equ PC5 =5
.equ PC4 =4
.equ PC3 =3
.equ PC2 =2
.equ PC1 =1
.equ PC0 =0
.equ DDC7 =7
.equ DDC6 =6
.equ DDC5 =5
.equ DDC4 =4
.equ DDC3 =3
.equ DDC2 =2
.equ DDC1 =1
.equ DDC0 =0
.equ PINC7 =7
.equ PINC6 =6
.equ PINC5 =5
.equ PINC4 =4
.equ PINC3 =3
.equ PINC2 =2
.equ PINC1 =1
.equ PINC0 =0
.equ PD7 =7
.equ PD6 =6
.equ PD5 =5
.equ PD4 =4
.equ PD3 =3
.equ PD2 =2
.equ PD1 =1
.equ PD0 =0
.equ DDD7 =7
.equ DDD6 =6
.equ DDD5 =5
.equ DDD4 =4
.equ DDD3 =3
.equ DDD2 =2
.equ DDD1 =1
.equ DDD0 =0
.equ PIND7 =7
.equ PIND6 =6
.equ PIND5 =5
.equ PIND4 =4
.equ PIND3 =3
.equ PIND2 =2
.equ PIND1 =1
.equ PIND0 =0
.equ SPIE =7
.equ SPE =6
.equ DORD =5
.equ MSTR =4
.equ CPOL =3
.equ CPHA =2
.equ SPR1 =1
.equ SPR0 =0
.equ SPIF =7
.equ WCOL =6
.equ RXC =7
.equ TXC =6
.equ UDRE =5
.equ FE =4
.equ OR =3
.equ RXCIE =7
.equ TXCIE =6
.equ UDRIE =5
.equ RXEN =4
.equ TXEN =3
.equ CHR9 =2
.equ RXB8 =1
.equ TXB8 =0
.equ ACD =7
.equ ACO =5
.equ ACI =4
.equ ACIE =3
.equ ACIC =2
.equ ACIS1 =1
.equ ACIS0 =0
.equ MUX2 =2
.equ MUX1 =1
.equ MUX0 =0
.equ ADEN =7
.equ ADSC =6
.equ ADFR =5
.equ ADIF =4
.equ ADIE =3
.equ ADPS2 =2
.equ ADPS1 =1
.equ ADPS0 =0
.def XL =r26
.def XH =r27
.def YL =r28
.def YH =r29
.def ZL =r30
.def ZH =r31
.equ RAMEND =$25F ;Last On-Chip SRAM location
.equ XRAMEND =$25F
.equ E2END =$1FF
.equ FLASHEND=$FFF
.equ INT0addr=$001 ;External Interrupt0 Vector Address
.equ INT1addr=$002 ;External Interrupt1 Vector Address
.equ OC2addr =$003 ;Timer2 compare match Vector Address
.equ OVF2addr=$004 ;Timer2 overflow Vector Address
.equ ICP1addr=$005 ;Timer1 Input Capture Vector Address
.equ OC1Aaddr=$006 ;Timer1 Output Compare A Interrupt Vector Address
.equ OC1Baddr=$007 ;Timer1 Output Compare B Interrupt Vector Address
.equ OVF1addr=$008 ;Overflow1 Interrupt Vector Address
.equ OVF0addr=$009 ;Overflow0 Interrupt Vector Address
.equ SPIaddr =$00A ;SPI Interrupt Vector Address
.equ URXCaddr=$00B ;UART Receive Complete Interrupt Vector Address
.equ UDREaddr=$00C ;UART Data Register Empty Interrupt Vector Address
.equ UTXCaddr=$00D ;UART Transmit Complete Interrupt Vector Address
.equ ADCCaddr=$00E ;ADC Conversion Complete Interrupt Vector Address
.equ ERDYaddr=$00F ;EEPROM Write Complete Interrupt Vector Address
.equ ACIaddr =$010 ;Analog Comparator Interrupt Vector Address
000000 c01f rjmp RESET ;AVR
