In my media devices ar­chi­tec­ture class, we are developing on the GBA. Un­for­tu­nate­ly, most of the students are developing on windows machines, which leaves me and a few others the odd men out. On macs, we're using devkitarm as our compiler with a provided makefile. Un­for­tu­nate­ly, the Makefile had a few flags mis­con­fig­ured.

The stock makefile worked perfectly until we started dealing with sound. The problem was two fold:

1. Setting the interrupt handler would cause the GBA to reset
2. Sound files larger than thirty seconds would overflow the ewram

There were two macros in the make file that were used for compiling and linking re­spec­tive­ly:

MODEL = -mthumb -mthumb-interwork
SPECS = -specs=gba_mb.specs

The …continue.