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twlBg (and agbBg as well I suppose if you wanted to mod AGB_FIRM too) handles sending framebuffer stuff from arm9 to arm11 for display. (arm7 for AGB_FIRM. I'm not sure arm9 does anything in AGB mode aside from handling transfer of saves to/from AGBSAVE partition on NAND) So yeah, things like scaling filters and aspect ratio can be modified via twlBg/agbBg.
twlBg/agbBg are the arm11 sections of the FIRM of TWL_FIRM/AGB_FIRM.
The only thing I've ever messed with with twlBg was the dev launcher SRL buried in the .code.
So I'm not the person to ask on how to make said changes.
twlBg/agbBg are the arm11 sections of the FIRM of TWL_FIRM/AGB_FIRM.
The only thing I've ever messed with with twlBg was the dev launcher SRL buried in the .code.
So I'm not the person to ask on how to make said changes.
Last edited by Apache Thunder,