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An Amstrad 3-inch floppy drive An Amstrad CPC loading a game from floppy disk. The 3-inch "Compact Floppy Disk" or "CF-2" [18] was an intended rival to Sony's 3.5" floppy system [19] introduced by a consortium of manufacturers led by Matsushita. [19] Hitachi was a manufacturer of 3-inch disk drives, and stated in advertisements, "It's clear ...
The floppy disk drives on these models were in the unusual 3-inch "compact floppy" format, [13] which was selected as it had a simpler electrical interface than 3½-inch drives. [33] In the range's early days supplies of 3-inch floppies occasionally ran out, [13] but by 1988 the PCW's popularity encouraged suppliers to compete for this market. [34]
Amstrad CPC/PCW: 3 inch Double 1 40 9 512 180 kB 300 MFM Single head drive, but double-sided floppy discs (total of 360 kB per floppy) Amstrad PCW8512/9512: 3 inch Double 2 80 9 512 720 kB 300 MFM 720 kB mode uses both sides - ensure disc inserted correct way up. Apple II: 5 1 ⁄ 4 inch Double 1 35 13 256 soft 113.75 kB 300 GCR [NB 2] 1 16 140 kB
Close-up of 3 + 1 ⁄ 2-inch disk Standard 3 + 1 ⁄ 2-inch disk with a blank label. In 1981, Sony introduced their 3 + 1 ⁄ 2-inch floppy disk cartridge (90.0 mm × 94.0 mm) having a single sided unformatted capacity of 218.8 KB and a formatted capacity of 161.2 KB. [citation needed] A double sided version was available in 1982.
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
Amstrad launched two new variants of the Spectrum: the ZX Spectrum +2, based on the ZX Spectrum 128, with a built-in cassette tape drive (like the CPC 464) and, the following year, the ZX Spectrum +3, with a built-in floppy disk drive (similar to the CPC 664 and 6128), taking the 3" disks that many Amstrad machines used. The ZX Spectrum +2 ...