pokecrystal/FAQ.md

FAQ

Questions

• What is pokecrystal11.gbc?
• Can't build ROM; "ERROR: UNION already defined"
• Can't build ROM; "Segmentation fault" from rgbgfx
• Can't build ROM; "Section is too big" or "Unable to place section in bank"
• How do I edit maps?
• I need more help!

What is pokecrystal11.gbc?

Version 1.1 of Pokémon Crystal, which fixed some issues with the initial international release. make crystal11 defines CRYSTAL11 so the assembly builds the changed version.

Can't build ROM; "ERROR: UNION already defined"

Download rgbds 0.3.3. Earlier versions will not work.

Can't build ROM; "Segmentation fault" from rgbgfx

If you are using 64-bit Windows, download 64-bit Cygwin and 64-bit rgbds.

Can't build ROM; "Section is too big" or "Unable to place section in bank"

If you have not changed any of the asm, make sure you have the latest version of pokecrystal and the correct version of rgbds (see INSTALL.md).

If you added or changed any code, it has to fit in the memory banks. The 2MB ROM is divided into 128 banks of 4KB each, numbered $00 to $7F. The linkerscript pokecrystal.link lists which **SECTION**s go in which banks. Try moving some code into a new section.

How do I edit maps?

For asm scripts, read docs/map_scripts.md. For blk layouts, try crowdmap or Polished Map.

I need more help!

Try asking on IRC or Discord (see README.md).