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Circuitry that controls reading from and writing to a computer's floppy disk drive
A floppy disk controller (FDC) is a hardware component that directs and controls reading from and writing to a computer's floppy disk drive (FDD). It has
Floppy_disk_controller
Controller for disk storage, usually integrated into the drive
A disk controller is a controller circuit that enables a CPU to communicate with a hard disk, floppy disk or other kind of disk drive. It also provides
Disk_controller
Specialised hard disk controller for forensic usage
A forensic disk controller or hardware write-block device is a specialized type of computer hard disk controller made for the purpose of gaining read-only
Forensic_disk_controller
Floppy disk drive for the Apple II computer
(equivalent to $2,940 in 2025) including the controller card (which can control up to two drives) and cable. The Disk II was designed specifically for use with
Disk_II
Removable disk storage medium
but to the disk controller and its lack of support for Apple's GCR (Group Coded Recording) encoding used on 400 kB and 800 kB Macintosh disks. 8 in (200 mm)
Floppy_disk
Device that manages disk drives
A disk array controller is a device that manages the physical disk drives and presents them to the computer as logical units. It often implements hardware
Disk_array_controller
storage interface controller on CPU or chipset, the flash memory controller on solid state drive, or the disk controller on hard disk drive. In history
Storage_controller
Feature of computer systems
systems use DMA, including disk drive controllers, graphics cards, network cards, sound cards and dedicated DMA controllers (acting on behalf of the aforementioned
Direct_memory_access
floppy disk controller to read (appearing as one 5632-byte physical sector per track). Format used by rare third-party drives with quad density disks; such
List_of_floppy_disk_formats
Single-chip version of the floppy disk controller for the Apple II
Machine (or IWM for short) is a single-chip version of the floppy disk controller for the Apple II. It was also employed in Macintosh computers. When
Integrated_Woz_Machine
Floppy disk or optical disk drive made by Apple
Apple II 3.5 Disk Controller Card for Apple IIe and IIGS computers so they too could use 1.40 MB storage and read/write MS-DOS. The controller card as well
SuperDrive
Electro-mechanical data storage device
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical computer data storage device that stores and retrieves digital data
Hard_disk_drive
1977–1993 series of microcomputers
second drive (without controller) retailed for $495. The Disk II single-sided floppy drive used 5.25-inch floppy disks; double-sided disks could be used, one
Apple_II
Internal expansion bus in early PC compatibles
standard dual-function floppy disk controller and hard disk controller card for the IBM PC AT; the fixed disk controller on this card implemented the register
Industry Standard Architecture
Industry_Standard_Architecture
Computer storage bus
only one floppy disk drive can be connected. Floppy disk controller Floppy drive power connector Mueller, Scott (2006-03-24). "Floppy Disk Drives, Past and
Floppy_disk_drive_interface
Buffer between a computer and a storage disk
called disk buffer. Note that disk array controllers, as opposed to disk controllers, usually have normal cache memory of around 0.5–8 GiB. When a disk's controller
Disk_buffer
Data storage technology
slower, mechanical hard-disk drive. For this configuration to provide a significant speed advantage, an appropriate controller is needed that uses the
RAID
Hard disk drive
selection as the hard drive subsystem for the original IBM XT, disk drive controllers supporting the ST-412 interface grew to become ubiquitous in the
ST-506/ST-412
the series concluding in June 1987. In October and November 1987, a disk controller card was also published as "Project 1617". Over the next decade, about
Applix_1616
Chipset used in Amiga personal computer
Keller, from MOS Technology, is the interrupt controller, but also includes logic for audio playback, floppy disk drive control, serial port input/output and
Amiga_Original_Chip_Set
External floppy disk drive by Apple
SuperDrive controller (due to electrical changes with the interface). The disks in practice only support the MFS file system. Although a 400-kilobyte disk may
Macintosh_External_Disk_Drive
Video game console peripheral
The Family Computer Disk System, commonly shortened to the Famicom Disk System, is a peripheral for Nintendo's Family Computer (Famicom) home video game
Famicom_Disk_System
Historical method for giving addresses to physical data blocks on hard disk drives
disk - 1), because early hard drives didn't come with an embedded disk controller, that would hide the physical layout. A separate generic controller
Cylinder-head-sector
Software-based, block-level cache of drive data stored in the host computer's main memory
memory. Separate disk caching is provided on the hardware side, by dedicated RAM or NVRAM chips located either in the disk controller (in which case the
Page_cache
Process of preparing a data storage device for initial use
low-level format of floppy disks (and early hard disks) is performed by the disk drive's controller. For a standard 1.44 MB floppy disk, low-level formatting
Disk_formatting
Former American computer hardware company
products, especially their hard disk controller ICs. A major customer of Xebec was IBM, who used their disk controllers extensively in the PC XT in 1983
Xebec_Corporation
Microcomputer system
consisted of an 8-bit and a 16-bit microprocessor and a Winchester disk controller. It was intended as a universal programming and development system
P8000
American data storage company
was making hard disk drive controllers, and in 1983, it won the contract to provide IBM with controllers for the PC/AT. That controller, the WD1003, became
Western_Digital
Sector of a disk storage unit which is unreadable
wear or flash controller error may also cause bad sectors. Bad sectors may be detected by the operating system or the disk controller. Most file systems
Bad_sector
Computer hardware device
devices include ESCON and newer FICON. Disk array controller Fibre Channel Host Bus Adapters Host controller interface for USB and FireWire host adapter
Host_adapter
Home video game console
was based on that of Nintendo's arcade game Donkey Kong (1981) and its controller design was reused from Nintendo's portable Game & Watch hardware. For
Nintendo_Entertainment_System
Floppy disk controller
The FD1771, sometimes WD1771, is a floppy disk controller chip, the first in a line of floppy disk controllers produced by Western Digital. It uses single
Western_Digital_FD1771
Line of home computers
redesigned 5-volt disk controller was introduced with its own new Disk BASIC ROM (v1.1). It adds a new command, DOS, to auto-boot software from disk (this requires
TRS-80_Color_Computer
Index of articles associated with the same name
communications controller chip Peripheral DMA controller Disk controller Floppy disk controller Disk array controller, also known as a RAID controller, a type
Controller_(computing)
1982 DEC microcomputer
Corporation produced a Winchester disk controller capable of controlling hard disks compatible with the ST-506 interface. The controller, based on the Western Digital
Rainbow_100
Series of modular microcomputer systems
optional keyboard. The Acorn System 3 added a floppy disk controller card, floppy disk drive, and disk operating system ROM, replacing the cassette interface
Acorn_System
Data security technology
people or processes. Disk encryption uses disk encryption software or hardware to encrypt every bit of data that goes on a disk or disk volume. It is used
Disk_encryption
Floppy disk drive for the Commodore 64
contains a MOS Technology 6502 microprocessor, doubling as a disk controller and on-board disk operating system processor. The number of sectors per track
Commodore_1541
Topics referred to by the same term
(video game), a 1987 Konami arcade game Ajax (floppy disk controller), a floppy disk controller fitted to the Atari STE Ajax (programming), Asynchronous
Ajax
Early portable microcomputer
head damage from rough handling.[citation needed] A single-density disk controller was used to keep costs down. In September 1981, Osborne Computer Company
Osborne_1
British 8-bit microcomputer, 1977 to 1985
single density floppy disk controller card that could interfaced to either internal 5¼-inch or external 8-inch floppy disk drives. Disk capacity was 80 KB
Research_Machines_380Z
Prototype computer
after Bill Gardei) CSG 4151: DMAgic DMA controller (designed by Paul Lassa) F011C: FDC (floppy disk controller, also designed by Bill Gardei) The C65 also
Commodore_65
Operating system focused on disk-based file operations
A disk operating system (DOS) is a computer operating system that requires a hard disk (HDD), floppy disk, solid-state drive (SSD), or other direct-access
Disk_operating_system
Computer bus used for data storage systems
the disk drive and controller; most of the time, however, 15 or 20 megabit ESDI disk drives were not downward compatible (i.e. a 15 or 20 megabit disk drive
Hard_disk_drive_interface
Disk storage system
Components of a disk array include: Disk array controllers Cache in form of both volatile random-access memory and non-volatile flash memory. Disk enclosures
Disk_array
Main printed circuit board used for a computing device
onboard devices. Disk controllers for SATA drives, and historical PATA drives Historical floppy-disk controller Integrated graphics controller supporting 2D
Motherboard
Macintosh format disks. dd (Unix) Disk image Disk storage Don't Copy That Floppy Floppy disk controller Floppy disk format Floppy disk hardware emulator
Floppy_disk_variants
Series of British microcomputers by Acorn
replacement of the Intel 8271 floppy-disk controller with the Western Digital 1770: not only was the new controller mapped to different addresses, it is
BBC_Micro
Family of personal computers sold by Commodore
Turbo, accelerator, RAM expansion, PC emulator A2091 / A590 SCSI hard disk controller + 2 MB RAM expansion A3070 SCSI tape backup unit with a capacity of
Amiga
1977 microcomputer by Tandy Corporation
to a disk machine necessitates installing at least 32 KB of RAM, the disk controller board, and another power supply for the disk drives. Disk upgrades
TRS-80
magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD) and floppy disk drive
History of IBM magnetic disk drives
History_of_IBM_magnetic_disk_drives
Portable computer released in 1983
disk controller socket to the drive connector. This capability is unused by the included single-sided Western Digital FD1793 floppy-disk controller.
Osborne_Executive
Computer storage device from 1982
the inclusion of search logic in the disk controller. In its initial form, the search logic was built into the disk head. A standalone CAFS device was installed
Content Addressable File Store
Content_Addressable_File_Store
Floppy disk controller
The Cromemco 4FDC floppy-disk controller is designed to interface both 5.25- and 8.0-inch floppy disk drives to the S-100 computer bus used in Cromemco
Cromemco_4FDC
Microcomputer released in 1982
to install a disk controller with one or two internal 3.5" disk drives (the base system did not include a floppy disk controller or disk drives). The
Sony_SMC-70
Floppy drive by Apple
7x16, and 4x15. The controller uses similar circuitry to the Disk II controller, but runs at twice the clock rate. The controller uses a dedicated MOS
Apple_FileWare
Accumulation of data corruption on a storage device over time
incidents. Most disk, disk controller and higher-level systems are subject to a slight chance of unrecoverable failure. With ever-growing disk capacities,
Data_degradation
Computer storage device with no moving parts
This interface is managed by the SSD's controller and is often similar to those found in traditional hard disk drives (HDDs). Common interfaces include:
Solid-state_drive
1981 Australian kit computer
the Western Digital WD2793 floppy disk controller chip and had a Z80 DMA controller on board. The most popular disk format was 51⁄4" (133 mm) 80 track
Dick_Smith_Super-80_Computer
Series of computers sold in Japan by NEC
www.mm1.acidcave.net. Retrieved 2025-11-14. NEC μPD72070 - Floppy Disk Controller Specification Version 2.0 (PDF). 2.0 preliminary. NEC Corporation.
PC-8800_series
8-bit microprocessor
Programmable Interrupt Controller. 8257 – DMA Controller 8259 – Programmable Interrupt Controller 8271 – Programmable Floppy Disk Controller 8272 – Single/Double
Intel_8085
Low level firmware interface to the hardware
elementary operations required to complete the task through the particular disk controller hardware that is connected to that drive. The program is freed from
BIOS_interrupt_call
Technical document summarizing components
Front page of a floppy disk controller data sheet (1979)
Datasheet
take advantage of advanced disk I/O features in the system BIOS. It filtered interrupt 13h BIOS calls to the disk controller and directed them in the most
Microsoft_32-bit_disk_access
Signal to a computer processor emitted by hardware or software
the CPU. Such external devices may be part of the computer (e.g., disk controller) or they may be external peripherals. For example, pressing a keyboard
Interrupt
DMA Controller/Central Arbiter, 82308 Micro Channel Bus Controller, 82309 Address Bus Controller, 82706 VGA Graphics Controller, 82077 Floppy Disk Controller
List_of_Intel_chipsets
Storage density for magnetic disks
die ersten 150000 Geräte verkauft haben. […] NEC μPD72070 - Floppy Disk Controller Specification Version 2.0 (PDF). 2.0 preliminary. NEC Corporation.
Disk_density
Personal computer produced by Zenith Data Systems
connected the 10 MB removable cartridge hard disk, manufactured by Bull in Belfort A maximum of two disk controller cards can be installed in a standard system
Zenith_Z-89
Series of networkable home computers
used 5.25" floppy disks. Dynamic RAM disk machines with 64 or 128 KB RAM followed soon after, with a WD2793 Floppy Disk Controller incorporated on the
MicroBee
Intel chipset
chipset but with third party SATA disk controllers, 32-bit Windows XP AHCI drivers may still be supported by the disk controller vendor (non-Intel). A third
Intel_X79
IBM PC compatible home computer system
compatible with those on the TRS-80 Color Computer, an IBM-standard floppy-disk controller supporting two drives, and a parallel printer port, all integrated
Tandy_1000
Soviet DIY home computer
containing a set of ROM chips). In later years a floppy disk controller and an ATA hard disk controller were developed Keyboard: 67 keys. The keyboard matrix
Orion-128
Low-bandwidth computer motherboard bus
keyboard, PS/2 mouse, and floppy disk controller. Most PC motherboards with an LPC bus have either a Platform Controller Hub (PCH) or a southbridge chip
Low_Pin_Count
Personal computer model released in 1983
2x32 KB one A 10 MB hard drive was included on most sub-models, with a disk controller featuring Xebec ICs PC DOS 2.0 was included The 5-pin DIN for the cassette
IBM_Personal_Computer_XT
Method of compromising a host OS though the VM
corruption CVE-2015-3456 VENOM: buffer-overflow in QEMU's virtual floppy disk controller CVE-2015-7504 QEMU-KVM: Heap overflow in pcnet_receive function. CVE-2015-7835
Virtual_machine_escape
floppy drive to the old equipment by interfacing directly to the floppy disk controller, while storing data in another medium such as a USB thumb drive, Secure
Floppy_disk_hardware_emulator
Home computer created by Amstrad
not support standard floppy disk drives through the built-in FDD connector, it uses a compatible floppy disk controller (a Zilog Z765a). Standard drives
Sinclair_PC200
1978 US microcomputer
and Forth development system. Available hardware included a floppy disk controller and a backplane for expansion. Rockwell advertised the $375 AIM-65
AIM-65
American semiconductor company
service (link) [verification needed] "Marvell to Acquire the Hard Disk Drive Controller Business of QLogic". Marvell. 2005-08-29. Archived from the original
Marvell_Technology
Magnetic tape data storage format
Specification for Flexible Disk Controller Based Mini Data Cartridge Tape Drives") defines a method of using the Floppy disk controller in an IBM PC to control
Quarter-inch_cartridge
Component of the Microsoft Windows operating system
system, chipset or have no set category (eg. Intel Management Engine, Disk controller, ACPI events) Video and Audio Capture devices: Devices used to route
Device_Manager
trademark for a hard disk drive, disk controller, and host adapter on an expansion card for a personal computer. Typically a hard disk drive (HDD) installs
Hardcard
Series of microcomputers
two 51⁄4" half-height disks (two floppies or one floppy and one hard disk), and space for standard options (hard disk controller, additional video memory)
APC_series
Second model of Apple's Macintosh computer line
512K was designed with no slots for upgrade boards and had no hard-disk controller, so the few internal upgrades that were available for the 512K, such
Macintosh_512K
Series of pioneering microprocessors from the 1980s
acting as a channel controller for disk drives in the same machine. In a traditional machine, the processing capability of a disk controller, for instance,
Transputer
Desktop computer developed by Xerox
the 820: the 820 mainboard has a floppy disk controller (Western Digital FD1771) but no hard disk controller or any expansion bay capabilities, whereas
Xerox_820
1981 American microcomputer model
25″ floppy disk drives, storing 160 KB per disk side for a total of 320 KB of storage on one disk. The floppy drives require a controller card inserted
IBM_Personal_Computer
differed from a Z-2 by having one or two Wangco 5¼" disk drives, a disk power supply and a 4FDC disk controller in a Z-2 chassis. The Z-2D was available in assembled
Cromemco_Z-2
Computing term that indicates storage failure
to move as expected, or upon moving cannot track the disk surface correctly, the disk controller may attempt to recover from the error by returning the
Click_of_death
Early Z80-based microcomputer
unusual in that it used dual Z80 CPUs, the second being used as a disk controller. In 1981, it sold with 64K of RAM for $2649 ($9368 in 2025 USD) and
Intertec_Superbrain
Open-source x86 virtualization application
either as virtual hard disks. VirtualBox emulates IDE (PIIX4 and ICH6 controllers), SCSI, SATA (ICH8M controller), and SAS controllers, to which hard drives
VirtualBox
Encoding methods for representing data on magnetic media
marketed double-density 5¼-inch disk drives (like the single-sided B51 and double-sided B52 drives) and a controller solution implementing GCR since early
Group_coded_recording
memory History of hard disk drives List of defunct hard disk manufacturers List of solid-state drive manufacturers "Fusion-io Controller Products". Archived
List of flash memory controller manufacturers
List_of_flash_memory_controller_manufacturers
BIOS interrupt call for disk access
IBM PC used a 16-bit Intel 8237 DMA controller, the DMA transfers used for transferring data to and from the disk system cannot cross a physical 64K address
INT_13H
Computer
65, 130, and 380 MB SMD disks were connected to a Xylogics 450 SMD Controller. The SMD controller could support four disks even though Sun only supported
Sun-2
for their systems. Later board-level products included CPU, RAM, and disk controller cards. With the release of their CPU card, PolyMorphic began selling
PolyMorphic_Systems
sectors that crop up after manufacturing. Many disk/controller subsystems reserve storage to remap defective disk sectors. The drive automatically creates its
Internal hard drive defect management
Internal_hard_drive_defect_management
Former American computer hardware company
December 1999. Floppy controller speeds access with cache Caching Disk Controller Relieves System Bottlenecks Disk Controller Unburdens Real Time Applications
Distributed Processing Technology
Distributed_Processing_Technology
Any of a set of standard configurations of Redundant Arrays of Independent Disks
which disk failed, for only one redundant parity disk is needed to detect an error. These extra disks are truly "redundant" since most disk controllers can
Standard_RAID_levels
East German manufacturer of computers and consumer electronics
CPU modules, RAM modules, graphics cards, magnetic tape controllers and floppy disk controllers. It was originally intended to be used to connect boards
VEB_Robotron
DISK CONTROLLER
DISK CONTROLLER
Male
English
 Short form of English Richard, DICK means "powerful ruler." Compare with another form of Dick.
Boy/Male
American, Australian, British, Chinese, Christian, Danish, Dutch, English, French, German, Swedish, Teutonic
Rich and Powerful Ruler; Powerful; Rich Ruler; Dominant Ruler; Peaceful Ruler; Strong Power; Hardy Power; Powerful Ruler; Brave; First of the People
Boy/Male
Christian & English(British/American/Australian)
Ruler of People
Girl/Female
British, English
Direction
Boy/Male
Australian, Egyptian
Sun Disk
Boy/Male
German Teutonic American Dutch English
Dagger.
Male
Dutch
, people's ruler.
Surname or Lastname
English
English : habitational name from Diss in Suffolk, which gets its name from a Norman pronunciation of Middle English diche, Old English dīc ‘ditch’, ‘dike’ (see Dyke).German : habitational name from Dissen near the Teutoburg forest.
Girl/Female
Norse
Spirited.
Surname or Lastname
English and Scottish
English and Scottish : unexplained. The name has been recorded in Glastonbury, Somerset, since 1705.Perhaps a variant of Czech LiÅ¡ka, (see Liska), Slovak LÃÅ¡ka, or German Liske.
Surname or Lastname
English (East Anglia)
English (East Anglia) : metonymic occupational name for a fisherman or fish seller, or a nickname for someone supposedly resembling a fish in some way, from Old Norse fiskr ‘fish’ (cognate with Old English fisc).
Male
Egyptian
, the most lovely Disk.
Boy/Male
Teutonic American English German Shakespearean
Rules the people.
Male
Egyptian
, disk.
Boy/Male
American, Australian, British, Chinese, Christian, Danish, Dutch, English, French, German, Indian, Netherlands, Scandinavian, Swedish, Swiss, Teutonic
Ruler of the People; Form of Derek; First of the People; King of Nations
Boy/Male
Australian, British, English, Scandinavian
Fisherman; Fish
Boy/Male
Swedish English
Fisherman.
Girl/Female
Australian, Danish, Greek, Norse, Scandinavian, Swedish
Active Spirit; Goddess; Double
Girl/Female
Norse Greek
Spirited.
Male
German
 Short form of German Diederick, DIRK means "first of the people; king of nations."
DISK CONTROLLER
DISK CONTROLLER
Girl/Female
Tamil
Pratika | பà¯à®°à®¤à®¿à®•à®¾
Image, Beautiful, Symbol, Symbolic
Boy/Male
Teutonic
warrior.
Boy/Male
Irish Teutonic
Robin.
Boy/Male
English
Shepherd.
Surname or Lastname
English
English : from the female personal name Emm; this was the English form of Emma, which was a popular Norman name of Germanic origin, originally a short form of compound names formed with erm(en), irm(en) ‘entire’.
Girl/Female
Indian, Sikh
Angel
Girl/Female
Indian
Beautiful, Friendly
Boy/Male
American, Arabic, Christian, Danish, Gaelic, Gujarati, Hindu, Indian, Muslim, Parsi, Persian, Punjabi, Telugu
Kings; Royal; Ancient; Distant; Lord Krishna
Girl/Female
Indian, Kannada, Marathi
The Son of Arjun in Mahabharat
Female
English
English variant spelling of Native American Dakota Winona, WENONA means "firstborn daughter."
DISK CONTROLLER
DISK CONTROLLER
DISK CONTROLLER
DISK CONTROLLER
DISK CONTROLLER
v. t.
To shut up, as in a desk; to treasure.
n.
A disk. See Disk.
n.
To incur the risk or danger of; as, to risk a battle.
v. t.
To make dusk.
v. i.
To grow dusk.
v. t.
To make concave, or depress in the middle, like a dish; as, to dish a wheel by inclining the spokes.
n.
The state of being concave, or like a dish, or the degree of such concavity; as, the dish of a wheel.
n.
Imperfect obscurity; a middle degree between light and darkness; twilight; as, the dusk of the evening.
n.
In owls, the space around the eyes.
n.
A flat, circular plate; as, a disk of metal or paper.
n.
To expose to risk, hazard, or peril; to venture; as, to risk goods on board of a ship; to risk one's person in battle; to risk one's fame by a publication.
v. t.
To stab with a dirk.
n.
A circular structure either in plants or animals; as, a blood disc, a germinal disc, etc. Same as Disk.
n.
The food served in a dish; hence, any particular kind of food; as, a cold dish; a warm dish; a delicious dish. "A dish fit for the gods."
v. t.
To put in a dish, ready for the table.
n.
A circular structure either in plants or animals; as, a blood disk; germinal disk, etc.
a.
Disk-shaped; discoid.
n.
The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk.