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 Custom SWI handler or Undefined instruction handler 
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Joined: Sun Jan 06, 2019 9:04 pm
Posts: 1
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).



Sun Jan 06, 2019 9:07 pm

Joined: Mon Jul 12, 2010 9:45 pm
Posts: 37
Unfortunately it isn't possible to use custom exception vectors on GBA, because the memory at 00000000 is occupied by the BIOS (which indeed is read-only).

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Mon Jan 07, 2019 2:02 am
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