Thread: Nasty looking thing

I tought that I was OK at C until I was working on this just now. I am working through someones Framework and modifying it for my needs.

On trying to read it, I found this:

Code:

static xdata setup_dat * data sdat = (xdata setup_dat *)&SETUPDAT;

Im not sure if any of you guys are familiar with the 8051 processor and if not then just ignore the "xdata" and "data" statments as they are just different RAM spaces.

Can you tell me what this whole thing means?

If you are an 8051 developer then I have another question.

Code:

xdata type * data variable

Is that the decleration of a pointer in data that points to something in xdata OR a pointer in xdata that points to something in data?

That hurts?

Originally Posted by richard_hooper

Code:

xdata type * data variable

Is that the decleration of a pointer in data that points to something in xdata OR a pointer in xdata that points to something in data?

I believe you start reading from the right to the left, so "variable is a data pointer to type; the pointer is xdata. So the pointer is in data, but the data it points to is in xdata(?). (My 8051 is rusty.)

8051 uses a different type of ansi?

Originally Posted by Devil Panther

8051 uses a different type of ansi?

No. The implementation has language extensions (just like MSVC, GnuC, etc.).