PM Memory

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The Pokemon Mini has a 24-bit internal addressing bus. The entire bus is decoded, and thus nothing mirrors except cartridge memory. Externally, the cartridge bus is only 21 bits wide, so anything at or past $20000 is guaranteed to be a mirror of cartridge memory.

Pokemon Mini Memory Map
Start End Size Description
$000000 $000FFF $001000 Internal BIOS
$001000 $001FFF $001000 PM RAM
$002000 $0020FF $000100 Hardware Registers
$002100 $1FFFFF $1FDF00 Cartridge Memory
$200000 $FFFFFF $E00000 Cartridge Memory (Mirrored 7 Times)