I was thinking of developing a version of an upcoming game for Game Boy Advance/GBA SP that is simultaneously being developed for PC. However, even tho I have the HAM SDK for GBA, I'm not too sure where any carts or cables are available for developing a game and porting it onto the GBA cart. There was going to be a book published, but Nintendo talked them out of publishing that book. I just thought to myself that my game could be a good portable, handheld game on GBA as well as PC. I believe that C or ASM code would be the only languages that GBA uses, am I correct? I was almost considering porting a BlitzMax game project onto a cartridge, but I'm not too sure about the process of porting a game like that.