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Thought it would be something like that
anyway, I stopped trying to figure out how to use more tiles, and went on with trying to animate them.

Because it's fun
Never programmed anything in C before..
just reading other programs code.... cutting, pasting, edditing, and see what happens

Any tutorial would be awesome tho

Right..
I think i figured most things out now..

the program makes tile data.. those tiles are 8x8 pixels.
this means that the screen needs 20x18 tiles to be completely filled.

The problem with this is, that that's 360 tiles.
and since the tiles are numbered in hex, that only goes up to FF (which is 256 tiles)

so, it's not possible to get a complete fullscreen picture with this setup, but it does give you 256 tiles, so you can probably get pretty far with it..

you do have to adjust the starting point of the tile layout tho, if you want a smaller centered picture.

also, since the PCX2GB gives you a a complete set of tiles (360), you need to exclude the tiles you do not want (the ones on the border..)
this is tricky, because it means you have to remove tiles every 18 lines or so (depending on the layout you choose)

I'm not making a lot of sense, am I?
well, it's late, and english isn't my native language

anyway, here's a picture, that's about as big as you can go with this method...

That's my gf btw, because if you are coding till late in the evening, that doesn't mean you can't have a girlfriend

anyway.
I could type a step by step tomorrow, but it's quite complicated, because you have to tailer it to your needs everytime you make a rom
And I shall search on for a way to create true fullscreen pictures... maybe with bigger tiles, or a way to get the map counter higher than 256...

I should get some sleep, because it's 2 am again..

oh yeah, it's just compiling.. not hanging..
that takes a while

Sure, as long as you use the same name in the .bat file.

There you have it.
Fullscreen (well, basically) gameboy graphics.

God, this was annoying to make

Crappy photo picture of Apeshit's logo on my gameboy

Yay!
Although it's not really centered yet, but I need sleep first

Also: a hint to get GBDK to work
(This might be a big workaround, but at least it works..)

Place the GBDK folder in the root of your harddisk. (e.g. C:\GBDK\ or D: or whatever..)
Place the main .c file in the folder: examples/gb/

in the main .c file, make the links to the .map and the tiles.c file:
#include <gb/tiles.c>
#include <gb/map.map>

after that, place the tiles and map file in the folder: include/gb

Now, when all the files are in place and properly named, Make a .bat file containing the following lines:

..\..\bin\lcc -Wa-l -Wl-m -Wl-j -DUSE_SFR_FOR_REG -c -o *YOURFILENAME*.o *YOURFILENAME*.c
..\..\bin\lcc -Wa-l -Wl-m -Wl-j -DUSE_SFR_FOR_REG -o *YOURFILENAME*gb *YOURFILENAME*.o

(of course, replace the *YOURFILENAME* with your file name )

make sure the .bat is in the same folder as your main .c file (examples/gb)

Run the .bat file (this can take a while)

And see if it gives errors.