'this works
IF MM.INFO$(SDCARD) = "Ready" THEN
OPEN "testit.txt" FOR OUTPUT AS #1
CLOSE #1
PRINT MM.INFO$(FILESIZE "testit.txt")
ENDIF

'this works
IF MM.INFO$(SDCARD) = "Ready" THEN
OPEN "testit.txt" FOR OUTPUT AS #1
CLOSE #1
PRINT MM.INFO$(FILESIZE "wrong.nam") 'nonexisting file
junk$ = dir$("",file)
PRINT MM.INFO$(FILESIZE "testit.txt")
ENDIF

'this fails
IF MM.INFO$(SDCARD) = "Ready" THEN
OPEN "testit.txt" FOR OUTPUT AS #1
CLOSE #1
PRINT MM.INFO$(FILESIZE "wrong.nam") 'nonexisting file

PRINT MM.INFO$(FILESIZE "testit.txt")
ENDIF

'this fails
IF MM.INFO$(SDCARD) = "Ready" THEN
OPEN "testit.txt" FOR OUTPUT AS #1
CLOSE #1
PRINT MM.INFO$(FILESIZE "testit.txt") 'works
pRINT MM.INFO$(FILESIZE "wrong.nam") 'nonexisting file

PRINT MM.INFO$(FILESIZE "testit.txt") 'error
ENDIF

'Mandelbrot Explorer V1.4 for Color Maximite 2  10/26/2020
'By the Sasquatch
'...
 'Check for Wii Nunchuk
 On Error Skip 1
   Wii Nunchuk Open
 If MM.ERRNO = 0 Then
  If Nunchuk(T) = &HA4200000 Then  'Check for original style nunchuk
    HaveChuk = True
  Else
    Wii Nunchuk Close
  End If
 End If

 If Not HaveChuk Then
   'Check for Wii Classic Controller
   On Error Skip 1
     Wii Classic Open
   If MM.ERRNO = 0 Then
    If Classic(T) = &HA4200101 Then  'Check for Classic
      HaveClassic = True
    Else
      Wii Classic Close
    End If
   End If
 End If  

 'Check for Mouse on I2C2 Pin27 SDA, Pin28 SCK
 On Error Skip 1
   Controller Mouse Open
 If MM.ERRNO = 0 Then
   HaveMouse = True
   OldMouseX = Mouse(X)
   OldMouseY = Mouse(Y)    
 End If
'...

int SaveOptionErrorSkip=0;

GotAnInterrupt:
   LocalIndex++;                                                   // IRETURN will decrement this
   if(OptionErrorSkip>0)SaveOptionErrorSkip=OptionErrorSkip;
   else SaveOptionErrorSkip = 0;

void cmd_ireturn(void){
 if(InterruptReturn == NULL) error("Not in interrupt");
 checkend(cmdline);
 nextstmt = InterruptReturn;
 if(LocalIndex)    ClearVars(LocalIndex--);                        // delete any local variables
   TempMemoryIsChanged = true;                                     // signal that temporary memory should be checked
   *CurrentInterruptName = 0;                                        // for static vars we are not in an interrupt
   InterruptReturn = NULL;
   if(DelayedDrawKeyboard) {
       DelayedDrawKeyboard = false;
       DrawKeyboard(1);                                            // the pop-up GUI keyboard should be drawn AFTER the pen down interrupt
   }
   if(DelayedDrawFmtBox) {
       DelayedDrawFmtBox = false;
       DrawFmtBox(1);                                              // the pop-up GUI keyboard should be drawn AFTER the pen down interrupt
   }
   if(SaveOptionErrorSkip>0)OptionErrorSkip=SaveOptionErrorSkip+1;
}