Hello

How I have to change stack between a TSR and interrupt program?

I try to use this code...

void interrupt newTimer()
{
....
(*oldTimer)();
if (running == 0)
{
  running = 1;
  disable();
  originalSP = _SP;
  originalSS = _SS;
  _SP = myStack;
  _SS = mySS;
  enable();
...
....
  disable();
  _SP = originalSP;
  _SS = originalSS;
  enable();
  running = 0;
}
}

but the sc compiler show the error message

C:\>sc c:\projekty\dos\pokus1.cpp -ms -cpp -d
        intss = _SS;
                   ^
c:\projekty\dos\pokus1.cpp(137) : Error: undefined identifier '_SS'
--- errorlevel 1
C:\>

Thanks Zbynek

You'll need to resort to inline assembler:

    _asm
    {
        mov AX,originalSS
        mov SS,AX
    }


Zbynìk Jaro¹ wrote in message <9lao6g$1itc$1@digitaldaemon.com>...
>Hello
>
>How I have to change stack between a TSR and interrupt program?
>
>I try to use this code...
>
>void interrupt newTimer()
>{
>....
>(*oldTimer)();
>if (running == 0)
>{
>  running = 1;
>  disable();
>  originalSP = _SP;
>  originalSS = _SS;
>  _SP = myStack;
>  _SS = mySS;
>  enable();
>...
>....
>  disable();
>  _SP = originalSP;
>  _SS = originalSS;
>  enable();
>  running = 0;
>}
>}
>
>but the sc compiler show the error message
>
>C:\>sc c:\projekty\dos\pokus1.cpp -ms -cpp -d
>        intss = _SS;
>                   ^
>c:\projekty\dos\pokus1.cpp(137) : Error: undefined identifier '_SS'
>--- errorlevel 1
>C:\>
>
>Thanks Zbynek
>
>
>