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by ycelik
Sun Jan 06, 2019 9:07 pm
Forum: GBA Development
Topic: Custom SWI handler or Undefined instruction handler
Replies: 1
Views: 1169

Custom SWI handler or Undefined instruction handler

Hi all,

Is it possible to "hack" the vector table, so that your GBA uses for example a custom handler
for undefined instructions?
I tried to write to the base 0x04 address, but that did not work (read only memory? Bios protected? tested in no$gba).

Greetings,

Joseph