Hello Mike,


> It is writtein in Borland BDS2006 and if there is
> a bug I am not at all surprised as I am not a
> programmer. The question is where is the bug?
Well, hard to say without access to the source code;-)

> Porting to a differnt environment would be difficult
> but not impossible. The main problem is it is a lot
> of work if you are not familiar with the new environment.
I am not familiar to BDS2006 so I have no idea what
specific functions it might supply and to what extent
you are using them. It would however be pretty
straight-forward to run the source code through the latest
version of the gcc compiler.

Error checking is improving over time and today the
gcc compiler will detect a lot of errors that were not
detected by earlier compilers.

Maybe there is an option in BDS2006 to enable a debug
option to do boundary checking. It seems to me that the
problem could be caused by writes outside allocated memory.

73

Leif / SM5BSZ


>
> Mike
>
> --- In FCDevelopment@..., Leif Asbrink <leif@...> wrote:
> >
> > Hi All,
> >
> > I am new in this list, I do not own a FunCube myself, but
> > as the author of Linrad, a fairly general SDR program I am
> > interested in having the FunCube dongle working well with
> > my software.
> >
> > Linrad works with a couple of different ExtIO dll files, but
> > there are problems with the ExtIO_FCD_G0MJW.dll file for
> > FunCube.
> >
> > Sometimes it works, sometimes it does not. It seems to me that
> > there is a bug in the dll that causes writes outside some
> > buffer area. I can move the dll load and call to the InitHW
> > entry to various places in the Linrad code and as it turns out
> > the result differs in an unexpected way. The original
> > place (linrad-03.33 and earlier) sometimes works, sometimes not.
> > By making the load library and InitHW the very first statements
> > in the Linrad code it seems I can get the FunCube work reliably.
> >
> > When I move the FC initialization further down the code in
> > Linrads main routine some places make the dll work, but cause
> > an error on the exit from Linrad. It seems that placing the
> > FC stuff first when all data memory is undefined makes writes
> > outside bounds harmless.
> >
> > I have searched info about this dll but I found nothing.
> > In what environment is it built? Can it be built for
> > Linux and Mac OS X also?
> >
> > 73
> >
> > Leif / SM5BSZ
> >
>
>