Data Interchange on 90 mm Flexible Disk
Cartridges using MFM Recording at 31 831 ftprad on 80 Tracks on
each Side - ISO Type 303
This Ecma Standard specifies the characteristics of 90 mm flexible
disk cartridges recorded at 31 831 ftprad using modified frequency
modulation recording, on 80 tracks on each side. Such flexible
disk cartridges are identified as ISO
Type 303 .
It specifies the mechanical, physical and magnetic characteristics
of the cartridge, so as to provide physical interchangeability
between data processing systems.
It also specifies the method of recording, the quality of the
recorded signals, the track layout and the track format.
Together with Standard ECMA-107,
this Standard provides for full data interchange between data
The following file can be freely downloaded:
||2 696 768
||Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 10994.