hi,

i'll start with the obligatory, "i'm new to this" bit. i've only been
playing around w/ programming the gba for about a month.

anyhow, i would like to be able to add my own system calls, via the swi
instruction, however, the little info i have found about this implies that
the system calls are BIOS only, and that there is no way to add any
user-defined calls.

does anyone know if this is true or not? has anyone been able to define
their own syscalls?

if not, then can anoyone think of a way to force a hardware interrupt
(enter irq mode)?

thanks