timer_asm

void Timer_Init(void)
{
    __asm
    MOV TMOD, #01H          ;Setting Timer 0 to Mode 1
    MOV IE, #82H            ;Enabling interrupts, and turning on Timer 0 interrupt
    MOV P1, #00H            ;Setting P1 low
    MOV A, #0AH         ;Accumulator contains number of times to wait for
                    ;timer interrupt before toggling the LED
    MOV R1, #00H            ;R1 is used to check for Timer interrupt, using it to
                    ;make ISR as small as possible
    MOV TH0, #4BH           ;Timer register values to calculate 50 ms
    MOV TL0, #0FFH
    MOV TCON, #10H          ;Start the timer
    __endasm;
}