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MPC2000
akaifat
Firmware

akaifat

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C++ library to read/write Akai FAT16 volumes with 16.3 file names (MPC2000/MPC2000XL)

akaifat is custom firmware for the Akai Professional MPC2000 and Akai Professional MPC2000XL, by @izzyreal. Open source under GPL-3.0, 4 stars on GitHub.

forAkai Professional MPC2000,Akai Professional MPC2000XL·by@izzyreal

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akaifat

C++ library to read/write Akai FAT12/FAT16 volumes with 16.3 file names (MPC60/MPC2000/MPC2000XL)

FAT allocation encoding and Akai filename metadata are separate: the FAT12 codec uses standard packed 12-bit entries; AkaiFatFileSystem explicitly interprets Akai directory names (extra characters at bytes 12–19). This is not a generic DOS/VFAT filesystem API. The existing FAT16 BPB/root-directory classes also serve FAT12 because their layouts are shared; their public names remain compatible.

Reading recognizes FAT12 by data-cluster count, retaining support for explicitly labelled small FAT16 volumes. Unsigned boot sectors are accepted only for the observed complete 800 KiB MPC60 profile (512-byte sectors, ten sectors per track, two heads, two sectors per cluster, 112 root entries, two three-sector FATs). Opening or writing does not add a PC boot signature or change the geometry. The formatter still creates FAT16 volumes; FAT12 formatting is not added.