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/gregh/fairligh/tech.htm More specific information about the two Fairlight floppies (system and sound discs): QDOS 8" floppy format (Series I/II/IIx) Drive: Mitsubishi M2896-63, Qume Q242, YE Data YD180 360rpm, single density (FM), soft sectored (1 index hole), 77 tracks/side, 26 sectors/track, 128 Bytes/sector, 500KBit/sec raw single-sided -> total: 2002 sectors = 250.25KB formatted double-sided -> total: 4004 sectors = 500.5KB formatted Note: There are two variants of the double-sided QDOS format: QDOS-6809 and QDOS-6800 ("old QDOS"), differing in the low-level sector-numbering scheme for side 1 (which is handled by the low-level driver and is transparent to the user as long as the device parameters are set appropriately). For compatibility, Series IIx machines (running QDOS-6809) still employ the (old) QDOS-6800 format for CMI sound-disks (with the system-disk however having the new QDOS-6809 format). found below

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