Hallo Werner,
danke für den Tip werde mich gleich mal umschauen.

@Alle
stimmt der Code den jetzt? (Also das die Anzeigen nichts mehr anzeigen wenn an pinb.7 ein LOW Signal anliegt)


Code:
'           Hardware:
      '           ---------
      '           PD0:     gelbe LED (ab 6250 Umdr./min.)
      '           PD6:     Signaleingang
      '           PB0-PB6: 7-segment - Segment A bis G
      '           PD1-PD5: 7-segment - Ziffer - Select
     '            PB7: Eingang (Anzeige Tot)

      $regfile = "2313def.dat"                      'AT90S2313
      $crystal = 8000000                            '8MHz Quarz
      Ddrb = &B01111111                             'PortB = Ausgang
      Ddrd = &B0111111                              'PortD = Ausgang bis auf PD6
      portd = &B10000000                            'Pullup von Pinb.7 Aktivieren
     
 
      Pinb.7 alias herzeigen

      Dim Icount As Long At &H60
      Dim Wcountlo As Word At &H60 Overlay
      Dim Wcounthi As Word At &H62 Overlay
      Dim Temp As Integer At &H80
      Dim Temp2 As Integer At &H80 Overlay
      Dim Y As String * 5 At &H70
      Dim Z(5) As Byte At &H70 Overlay
      Dim Frequenz As Long
      Dim Freq As Word
      Dim Freq1 As Word
      Dim Freq2 As Word
      Dim Timeout As Byte
      Dim Impulse As Byte
      Dim X(5) As Byte
      Dim Test As Integer
      Dim Test2 As Integer
      Dim Zaehler As Byte
      Timeout = 0

      On Icp1 Oncapture
      On Ovf1 Onoverflow
      Config Timer1 = Timer , Prescale = 8 , Capture Edge = Rising
      Enable Icp1
      Enable Ovf1
      Enable Interrupts


'*******************
'* Start-Animation *
'*******************

      Do
         Portb = 1
         Portd = 2
         Waitms 50
         Portd = 4
         Waitms 50
         Portd = 8
         Waitms 50
         Portd = 16
         Waitms 50
         Portb = 2
         Waitms 50
         Portb = 64
         Waitms 50
         Portd = 8
         Waitms 50
         Portd = 4
         Waitms 50
         Portd = 2
         Waitms 50
         Portb = 16
         Waitms 50
         Portb = 8
         Waitms 50
         Portd = 4
         Waitms 50
         Portd = 8
         Waitms 50
         Portd = 16
         Waitms 50
         Portb = 4
         Waitms 50
         Portb = 64
         Waitms 50
         Portd = 8
         Waitms 50
         Portd = 4
         Waitms 50
         Portd = 2
         Waitms 50
         Portb = 32
         Waitms 50
      Loop Until Temp2 = 1                          'Bis zum 1. Impuls



'******************************************
'* Hauptschleife - LED-Anzeigen ansteuern *
'******************************************

Main:
Incr Timeout                                        'Bei Timeout: 0 U/min.
 If Timeout = 10 Then
  Timeout = 10
  Freq = 0
  Y = Str(freq)
  Z(1) = 0
  Z(2) = 0
  Z(3) = 0
  Z(4) = 0
  Z(5) = 48
 End If

For Test2 = 1 To 5                                          'Wert sichern .....
 X(test2) = Z(test2)
Next Test2

'******************************************
'* Anzeigen an                                                    *
'******************************************

if herzeigen = 1 Then                                       'Wenn herzeigen = 1 dann...

For Test2 = 1 To 400                                        '..... und 400 mal Anzeigen
 For Zaehler = 1 To 5
  Test = X(zaehler)
  Select Case Test
   Case 48 : Portb = 63
   Case 49 : Portb = 6
   Case 50 : Portb = 91
   Case 51 : Portb = 79
   Case 52 : Portb = 102
   Case 53 : Portb = 109
   Case 54 : Portb = 125
   Case 55 : Portb = 39
   Case 56 : Portb = 127
   Case 57 : Portb = 111
   Case Else : Portb = 0
  End Select
  Portd.zaehler = 1
  Waitus 100                                        'Zeit für jede Anzeige
  Portd.zaehler = 0
 Next Zaehler
Next Test2

'******************************************
'* Anzeigen aus                                                  *
'******************************************


 Else                                              'Wenn herzeigen = 0 Anzeigen aus
 Portb = 0
 Portd = 0
 END IF 

Goto Main




'*************************************
'* Interrupt-Routine (Zeiten messen) *
'* (wird bei jedem Impuls ausgelöst) *
'*************************************

Oncapture:
 Disable Icp1
 Incr Impulse
 If Impulse = 8 Then
  Impulse = 0
  Timeout = 0
  Wcountlo = Timer1
  Timer1 = 0
  Frequenz = 240000000 / Icount                             'Umrechnung für 4-Zylinder
  Wcounthi = 0

  Freq2 = Freq1
  Freq1 = Frequenz
  Frequenz = Freq1 + Freq2
  Frequenz = Frequenz / 2
  Freq = Frequenz

  If Freq > 5999 Then Portd.0 = 1                           'Wenn Drehzahl über 5999 LED an
  if Freq < 4000 Then Portd.0 = 0                           'Wenn Drehzahl unter 4000 LED aus
  If Freq < 150 Then
   Freq = 0
   Y = Str(freq)
   Z(1) = 0
   Z(2) = 0
   Z(3) = 0
   Z(4) = 0
   Z(5) = 48

  Else

   Y = Str(freq)
   If Z(5) = 0 Then                                         'Führende Nullen eliminieren
    Do
     Z(5) = Z(4)
     Z(4) = Z(3)
     Z(3) = Z(2)
     Z(2) = Z(1)
     Z(1) = 0
    Loop Until Z(5) > 0
   End If
  End If
 End If
End If
 Temp = 1
 Enable Icp1
Return

Onoverflow:
 Incr Wcounthi
Return