Отправлено Bill 24 сентября 2003 г. 17:54 В ответ на: Всё так и сделано, но как... отправлено cipher 24 сентября 2003 г. 17:42

#include         ; Define MCU type - ATMega163
;
; Constant definitions
;
#define TIMER0_BIT      (1<<0)          // Timer0 interrupt flag
#define INT0_BIT        (1<<1)          ; Int0 interrupt Flag
#define INT1_BIT        (1<<2)          ; Int1 interrupt Flag
#define ACINT_BIT       (1<<3)          ; Analog comparator interrupt Flag
        RSEG    UDATA1                  ; Global variable area
        PUBLIC  IntFlags                ;
IntFlags:                               ;
        DS      1                       ;
        COMMON  INTVEC
;        ORG     TIMER1_COMP1_vect       ;;; Timer1 Compare Match Interrupt handler
;        rjmp    Timer1Cmp_Int           ;;;
 
;        ORG     TIMER1_OVF1_vect        ;;; Timer1 Overflow interrupt handler
;        rjmp    Timer1Ov_Int            ;;;
        ORG     TIMER0_OVF_vect         ;;; Timer0 Overflow interrupt handler
        rjmp    Timer0Ov_Int            ;;;
;        ORG     ANA_COMP_vect           ;;; Analog comparator interrupt handler
;        rjmp    AnComp_Int              ;;;
        RSEG    CODE           ;;; Handlers code start
 
Timer0Ov_Int:           ;;; Timer0 Overflow interrupt handler
        st      -Y, R16         ; Save used registers on stack
        in      R16,SREG        ; Save status register
        st      -Y,R16          ;
        lds     r16, IntFlags   ; Set the flag
        ori     r16, TIMER0_BIT ;
        sts     IntFlags, r16   ;
        ldi     r16, 80         ; Reload Timer0
        out     TCNT0, r16      ; for the 20 mS time interval
        ld      R16,Y+          ; Restore status register
        out     SREG,R16        ;
        ld      R16, Y+         ; Restore register R16
        reti
;AnComp_Int:             ;;; Analog comparator interrupt handler
;        st      -Y, R16         ; Save used registers on stack
;        st      -Y, r30         ;
;        in      R16,SREG        ; Save status register
;        st      -Y,R16          ;
;
;        ldi     r30, IntFlags           ; Set the flag
;        ld      r16, Z                  ;
;        ori     r16, ACINT_BIT          ;
;        st      Z, r16                  ;
;
;        ld      R16,Y+          ; Restore status register
;        out     SREG,R16        ;
;        ld      r30, Y+         ; Restore Z register
;        ld      R16, Y+         ; Restore register R16
;        reti
        end