Subversion Repositories 8051

;
;
; testing timers and interrupts
;
;
;

        ajmp start;

        .org 03h        ;external interrupt 0
        reti;

        .org 0bh        ;t/c 0 interrupt
tc0:
        nop;
        jz tc0;
        mov p0, #00h
        setb c;
        reti;

        .org 13h        ;external interrupt 1
        reti;

        .org 1bh        ;t/c 1 interrupt
        mov p0, #01h    ;
        mov a, #01h     ;
        reti;

        .org 23h        ;serial interface interrupt
        reti;


start:
        mov ie, #08ah   ;enable interrupts
        mov ip, #008h   ;set prioriti lelev of t/c 1 to 1
        mov tmod, #000h ;t/c 0 and t/c 1 in timer mode 0
        mov th0, #0a0h  ;load timer 0
        mov tl0, #000h  ;
        mov th1, #090h  ;load timer 1
        mov tl1, #000h  ;
        clr a;
        clr c;
        mov tcon, #050h ;start timers

loop:
        nop             ;
        nop             ;
        nop             ;
        jnc loop        ;
        mov p0, #02h    ;