ANSI ISO 8630-2
ANS SO 8630-2 1987-JUN-15 nformaton processng - Data nterchange on 130 mm 525 n flexble dsk cartrdges usng modfed frequency modulaton recordng at 13 262 ftprad on 80 tracks on each sde - Part 2 Track format A for 77 tracks-Adopted by NCTS