snes address converter — free browser tool | fatcousin

convert between snes file offsets and cpu addresses · lorom hirom exhirom · bidirectional · no file required · runs locally

map mode

LoROM (map mode 0x20/0x30): 32 KB banks at $00:8000–$6F:FFFF. Common in older/smaller games.

file offset → cpu address

decimal or 0x hex

cpu address → file offset

$BB:AAAA or hex (no $)

memory map reference

bank rangeaddress rangedescription

$00–$3F / $80–$BF$0000–$1FFFWRAM mirror (first 8 KB)

$00–$3F / $80–$BF$2100–$213FPPU registers (VRAM, OAM, CGRAM)

$00–$3F / $80–$BF$2140–$2183APU I/O, WRAM access ports

$00–$3F / $80–$BF$4200–$421FCPU I/O (IRQ, NMI, math)

$00–$3F / $80–$BF$4300–$437FDMA / HDMA registers

$00–$3F / $80–$BF$8000–$FFFFLoROM data (ROM banks 0–63)

$40–$6F$0000–$FFFFLoROM data (banks 64–111) / HiROM mirror

$70–$7D$0000–$7FFFSRAM (battery-backed)

$7E$0000–$FFFFWRAM bank 0 (64 KB)

$7F$0000–$FFFFWRAM bank 1 (64 KB)

$C0–$FF$0000–$FFFFHiROM / ExHiROM ROM data