Runic question

I don't have the answer to your first question. To use GrayShadow's code, you need to use an assembler like xkas 0.06. Then you copy his code into a text file you rename the extension to .asm and you assemble it using the windows command prompt. The only thing that needs to be changed is "org $C2xxxx" to free space in bank $C2, such as "org $C26469" for a vanilla ROM. Note that if you use xkas, you'll need to write "hirom" at the top of your file and "header" if your ROM has a header.