Differencs between the Famicom Disk System and the Famicom cartridge ports are that the addition of the "LIMIT" option in this port, consider allowing players bring it closer to the 1992/93 Puyo Puyo, the garbage amount cap in a single chain can be adjusted to 18, 24, 30, 42, 60, or 255, and 255 represents the maximum number for an 8-bit console hence the binary equivalent "11111111" in a 8-bit number.
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