Difference between revisions of "Disk II"
m (+cat) |
|||
| (2 intermediate revisions by 2 users not shown) | |||
| Line 6: | Line 6: | ||
| capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3) | | capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3) | ||
| year introduced = 1978 | | year introduced = 1978 | ||
| + | | image = Disk II.jpg | ||
| + | | caption = Two Disk II drives | ||
}} | }} | ||
| − | The '''Disk II''' was a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by [[Apple Computer]]. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card and cable. The Disk II was designed specifically for use with the [[Apple II]] personal computer family to replace the slower cassette tape storage. | + | The '''Disk II''' was a 5¼-inch [[floppy disk]] [[drive]] designed by Steve Wozniak and manufactured by [[Apple Computer]]. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the [[controller]] card and cable. The Disk II was designed specifically for use with the [[Apple II]] personal computer family to replace the slower cassette tape storage. |
The first drives sold were built using parts from Shugart Drives, but to reduce costs Apple switched to Alps Electric Co. of Japan who built them for half the cost. Early production at Apple was handled by two people, and they produced about thirty drives a day. | The first drives sold were built using parts from Shugart Drives, but to reduce costs Apple switched to Alps Electric Co. of Japan who built them for half the cost. Early production at Apple was handled by two people, and they produced about thirty drives a day. | ||
| − | Normal storage capacity per disk side was 114KB with DOS 3.2.1 and earlier (13 256-byte sectors per track, 35 tracks per side), or 140KB with DOS 3.3 and the accompanying firmware update for the controller card (16 sectors/track). A Bell & Howell version of the Disk II was also manufactured by Apple in a black case which matched the color of the Bell & Howell version of the Apple II Plus which Apple was already manufacturing. Apple later modernized the appearance of the Disk II to better match the [[Apple IIe]] case, and also offered a combination of two Disk II drives in a single unit, called the [[DuoDisk]]. | + | Normal storage capacity per disk side was 114KB with DOS 3.2.1 and earlier (13 256-byte sectors per track, 35 tracks per side), or 140KB with DOS 3.3 and the accompanying [[firmware]] update for the controller card (16 sectors/track). A Bell & Howell version of the Disk II was also manufactured by Apple in a black case which matched the color of the Bell & Howell version of the Apple II Plus which Apple was already manufacturing. Apple later modernized the appearance of the Disk II to better match the [[Apple IIe]] case, and also offered a combination of two Disk II drives in a single unit, called the [[DuoDisk]]. |
| − | |||
== See also == | == See also == | ||
| Line 26: | Line 27: | ||
* [http://www.apple2.org.za/mirrors/ground.icaen.uiowa.edu/Mirrors/uni-kl/hardware/diskIIcontroller_hardware Disk II Controller hardware article] | * [http://www.apple2.org.za/mirrors/ground.icaen.uiowa.edu/Mirrors/uni-kl/hardware/diskIIcontroller_hardware Disk II Controller hardware article] | ||
* [http://home.swbell.net/rubywand/Csa2DSKETTE.html Apple II Diskette FAQ] and [http://home.swbell.net/rubywand/Csa2FDRIVE.html Apple II Drive FAQ] at comp.sys.apple2 FAQ mirror | * [http://home.swbell.net/rubywand/Csa2DSKETTE.html Apple II Diskette FAQ] and [http://home.swbell.net/rubywand/Csa2FDRIVE.html Apple II Drive FAQ] at comp.sys.apple2 FAQ mirror | ||
| + | |||
| + | [[Category: Disk Drives]] | ||
| + | [[Category: Apple Hardware]] | ||
Latest revision as of 01:09, 17 December 2018
| Disk II | |
 Two Disk II drives | |
| Manufacturer: | Apple |
|---|---|
| Year Introduced: | 1978 |
| Capacity: | 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3) |
The Disk II was a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by Apple Computer. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card and cable. The Disk II was designed specifically for use with the Apple II personal computer family to replace the slower cassette tape storage.
The first drives sold were built using parts from Shugart Drives, but to reduce costs Apple switched to Alps Electric Co. of Japan who built them for half the cost. Early production at Apple was handled by two people, and they produced about thirty drives a day.
Normal storage capacity per disk side was 114KB with DOS 3.2.1 and earlier (13 256-byte sectors per track, 35 tracks per side), or 140KB with DOS 3.3 and the accompanying firmware update for the controller card (16 sectors/track). A Bell & Howell version of the Disk II was also manufactured by Apple in a black case which matched the color of the Bell & Howell version of the Apple II Plus which Apple was already manufacturing. Apple later modernized the appearance of the Disk II to better match the Apple IIe case, and also offered a combination of two Disk II drives in a single unit, called the DuoDisk.
