BASCOM INT0 / 1 beide drücken Variable

Hab momeentan:
$regfile = "m8def.dat"                                      'ATmega8
$crystal = 4000000
 Config Int0 = Rising
 Config Int1 = Rising
 Enable Interrupts
 Enable Int0
 Enable Int1
 On Int0 Isr_von_int0
 On Int1 Isr_von_int1
                                              '4 MHz
Config Portc = Output
Config Portd.4 = Output
config portd.2 = Input
Config Portd.3 = Input
Portd.2 = 1
Portd.3 = 1

Dim An As Bit
Dim Vcc As Bit
Dim A As Bit
Do

If A = 0 Then
 Gosub Sub1
Else
Gosub Sub2
End If
Loop



 Isr_von_int0:
 Set A
 Return

  Isr_von_int1:
  Reset A
 Return

Sub1:

Portd.4 = 0
Portc.4 = 1
Portc.2 = 1
Portc.1 = 1
Wait 2
Portd.4 = 1
Portc.4 = 0
Portc.2 = 0
Portc.1 = 0
Wait 2

Return
Sub2:

Portd.4 = 0
Portc.0 = 1
Portc.3 = 1
Portc.5 = 1
Wait 2
Portd.4 = 1
Portc.5 = 0
Portc.3 = 0
Portc.0 = 0
Wait 2

Return


Nun die Frage:

Wie schreib ich es am besten das, wenn beide Taster gedrückt sind, er 
mir eine andere SUB aufruft?