AVR Freaks

Dears,

I'm trying to implement an example dealing with timer1 and it's interrupt.

the is written by BASCOM-AVR but when i compile it i got the error showed in the attached photo

can I please know what that mean?

this is the code:

Dim New_time As Byte
Dim Temp As Byte
Dim Seconds As Byte
Dim Minutes As Byte
Dim Hours As Byte
Dim Key As Byte

Const True = 1
Const Reload = 62500

Config Timer1 = Timer , Prescale = 64
Ocr1ah = High(reload)                                                 'Output Compare RegisterA
Ocr1al = Low(reload)

Tccr1a = 0
Set Tccr1b.3                                                          'bit CTC1 of control register TCCR1B must be set.

Config Portb = Output
Portb = 255

On Compare1a Timer1_isr                                               'compare interrupt oc-curs.

Enable Compare1a
Enable Interrupts

Do
   Key = Pind
   If Key = &H7F Then
      Seconds = 0
      Minutes = 0
      Hours = 0
   End If
   While New_time = True
      If Seconds = 60 Then
         Seconds = 0
         Incr Minutes
      End If
      If Minutes = 60 Then
         Minutes = 0
         Incr Hours
      End If
      If Hours = 24 Then Hours = 0
      Temp = Makebcd(seconds)
      If Key = &HFE Then Temp = Makebcd(minutes)
      If Key = &HFD Then Temp = Makebcd(hours)
      Portb = Not Temp
      New_time = Not True
   Wend

Loop
End

Timer1_isr:
   New_time = True
   Incr Seconds
Return