gba disassembler — free browser tool | fatcousin

arm7tdmi arm + thumb · gba rom auto-follow entry · 70+ i/o register labels · load more · export .txt · runs locally

drop file

drop a gba rom or arm7/thumb binary

.gba (GBA ROM) · .bin .rom (raw binary)

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status

drop a .gba rom or arm7/thumb binary

isa reference

ARM7TDMI modes

Thumb16-bit halfwords · default GBA game mode

ARM32-bit words · BIOS routines + critical loops

EntryGBA ROM entry at file offset 0xC0 · Thumb

GBA memory map

0x00000000BIOS ROM (16 KB)

0x02000000Work RAM external (256 KB)

0x03000000Work RAM internal (32 KB)

0x04000000I/O registers (LCD, Sound, DMA…)

0x05000000Palette RAM (1 KB)

0x06000000VRAM (96 KB)

0x07000000OAM (1 KB)

0x08000000ROM wait 0 (up to 32 MB)