Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Floppy-disk controller

+ Save concept

A floppy-disk controller (FDC) is a special-purpose chip and associated disk controller circuitry that directs and controls reading from and writing to a computer's floppy disk drive (FDD). [1]

37 relations: Amiga, BIOS, Central processing unit, Checksum, Commodore 1541, Commodore 1581, Cyclic redundancy check, Direct memory access, Disk controller, Disk density, Double-sided disk, Floppy disk, Frequency modulation, Group coded recording, Industry Standard Architecture, Input/output, Integrated circuit, Integrated Woz Machine, Intel, Interrupt, Interrupt request (PC architecture), Line level, List of floppy disk formats, Low Pin Count, Macintosh, Magnetic storage, Modified Frequency Modulation, NEC, Original Chip Set, Personal computer, Phase-locked loop, Revolutions per minute, Super I/O, System bus, Western Digital FD1771, Write precompensation, X86.


The Amiga is a family of personal computers introduced by Commodore in 1985.

New!!: Floppy-disk controller and Amiga · See more »


BIOS (an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is non-volatile firmware used to perform hardware initialization during the booting process (power-on startup), and to provide runtime services for operating systems and programs.

New!!: Floppy-disk controller and BIOS · See more »

Central processing unit

A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.

New!!: Floppy-disk controller and Central processing unit · See more »


A checksum is a small-sized datum derived from a block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage.

New!!: Floppy-disk controller and Checksum · See more »


Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

New!!: Floppy-disk controller and Christmas · See more »

Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

New!!: Floppy-disk controller and Christmas and holiday season · See more »

Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

New!!: Floppy-disk controller and Christmas Eve · See more »

Christmas traditions

Christmas traditions vary from country to country.

New!!: Floppy-disk controller and Christmas traditions · See more »

Commodore 1541

The Commodore 1541 (also known as the CBM 1541 and VIC-1541) is a floppy disk drive which was made by Commodore International for the Commodore 64 (C64), Commodore's most popular home computer.

New!!: Floppy-disk controller and Commodore 1541 · See more »

Commodore 1581

The Commodore 1581 is a 3½-inch double-sided double-density floppy disk drive that was released by Commodore Business Machines (CBM) in 1987, primarily for its C64 and C128 home/personal computers.

New!!: Floppy-disk controller and Commodore 1581 · See more »

Cyclic redundancy check

A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.

New!!: Floppy-disk controller and Cyclic redundancy check · See more »

Direct memory access

Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory (Random-access memory), independent of the central processing unit (CPU).

New!!: Floppy-disk controller and Direct memory access · See more »

Disk controller

The disk controller is the controller circuit which enables the CPU to communicate with a hard disk, floppy disk or other kind of disk drive.

New!!: Floppy-disk controller and Disk controller · See more »

Disk density

Disk density is a capacity designation on magnetic storage, usually floppy disks.

New!!: Floppy-disk controller and Disk density · See more »

Double-sided disk

In computer science, a double-sided disk is a disk of which both sides are used to store data.

New!!: Floppy-disk controller and Double-sided disk · See more »

Floppy disk

A floppy disk, also called a floppy, diskette, or just disk, is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles.

New!!: Floppy-disk controller and Floppy disk · See more »

Frequency modulation

In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.

New!!: Floppy-disk controller and Frequency modulation · See more »

Group coded recording

In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for magnetic media.

New!!: Floppy-disk controller and Group coded recording · See more »

Industry Standard Architecture

Industry Standard Architecture (ISA) is a retronym term for the 16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s.

New!!: Floppy-disk controller and Industry Standard Architecture · See more »


In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.

New!!: Floppy-disk controller and Input/output · See more »

Integrated circuit

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.

New!!: Floppy-disk controller and Integrated circuit · See more »

Integrated Woz Machine

The Integrated Woz Machine (or IWM for short) is a single-chip version of the floppy disk controller for the Apple II.

New!!: Floppy-disk controller and Integrated Woz Machine · See more »


Intel Corporation (stylized as intel) is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.

New!!: Floppy-disk controller and Intel · See more »


In system programming, an interrupt is a signal to the processor emitted by hardware or software indicating an event that needs immediate attention.

New!!: Floppy-disk controller and Interrupt · See more »

Interrupt request (PC architecture)

In a computer, an interrupt request (or IRQ) is a hardware signal sent to the processor that temporarily stops a running program and allows a special program, an interrupt handler, to run instead.

New!!: Floppy-disk controller and Interrupt request (PC architecture) · See more »

Line level

Line level is the specified strength of an audio signal used to transmit analog sound between audio components such as CD and DVD players, television sets, audio amplifiers, and mixing consoles.

New!!: Floppy-disk controller and Line level · See more »

List of floppy disk formats

This is a list of different floppy disk formats.

New!!: Floppy-disk controller and List of floppy disk formats · See more »

Low Pin Count

The Low Pin Count bus, or LPC bus, is a computer bus used on IBM-compatible personal computers to connect low-bandwidth devices to the CPU, such as the boot ROM, "legacy" I/O devices (integrated into a super I/O chip), and Trusted Platform Module (TPM).

New!!: Floppy-disk controller and Low Pin Count · See more »


The Macintosh (pronounced as; branded as Mac since 1998) is a family of personal computers designed, manufactured, and sold by Apple Inc. since January 1984.

New!!: Floppy-disk controller and Macintosh · See more »

Magnetic storage

Magnetic storage or magnetic recording is the storage of data on a magnetized medium.

New!!: Floppy-disk controller and Magnetic storage · See more »

Modified Frequency Modulation

Modified Frequency Modulation, commonly MFM, is a run-length limited (RLL) coding scheme used to encode the actual data-bits on most floppy disks.

New!!: Floppy-disk controller and Modified Frequency Modulation · See more »


is a Japanese multinational provider of information technology (IT) services and products, headquartered in Minato, Tokyo, Japan.

New!!: Floppy-disk controller and NEC · See more »

New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

New!!: Floppy-disk controller and New Year · See more »

New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

New!!: Floppy-disk controller and New Year's Day · See more »

New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

New!!: Floppy-disk controller and New Year's Eve · See more »

Original Chip Set

The Original Chip Set (OCS) is a chipset used in the earliest Commodore Amiga computers and defined the Amiga's graphics and sound capabilities.

New!!: Floppy-disk controller and Original Chip Set · See more »

Personal computer

A personal computer (PC) is a multi-purpose computer whose size, capabilities, and price make it feasible for individual use.

New!!: Floppy-disk controller and Personal computer · See more »

Phase-locked loop

A phase-locked loop or phase lock loop abbreviated as PLL is a control system that generates an output signal whose phase is related to the phase of an input signal.

New!!: Floppy-disk controller and Phase-locked loop · See more »

Revolutions per minute

Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min) is the number of turns in one minute.

New!!: Floppy-disk controller and Revolutions per minute · See more »

Super I/O

Super I/O is a class of I/O controller integrated circuits that began to be used on personal computer motherboards in the late 1980s, originally as add-in cards, later embedded on the motherboards.

New!!: Floppy-disk controller and Super I/O · See more »

System bus

A system bus is a single computer bus that connects the major components of a computer system, combining the functions of a data bus to carry information, an address bus to determine where it should be sent, and a control bus to determine its operation.

New!!: Floppy-disk controller and System bus · See more »

Western Digital FD1771

The FD1771 is the first in a line of floppy disk controllers produced by Western Digital.

New!!: Floppy-disk controller and Western Digital FD1771 · See more »

Write precompensation

Write precompensation (abbreviated WPcom in the literature) is a technical aspect of the design of hard disks, floppy disks and other digital magnetic recording devices.

New!!: Floppy-disk controller and Write precompensation · See more »


x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

New!!: Floppy-disk controller and X86 · See more »


2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

New!!: Floppy-disk controller and 2018 · See more »


2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

New!!: Floppy-disk controller and 2019 · See more »

Redirects here:

3 mode, 3-mode, 3mode, D765A, FDC controller, Floppy Disk Controller, Floppy controller, Floppy controllers, Floppy disk controller, Intel 8072A, Intel 82072, Intel 82072A, NEC 765, NEC 765A, NEC D765, NEC D765A, NEC uPD765, NEC uPD765A, NEC µPD765, NEC µPD765A, NEC μPD765, NEC μPD765A, UPD765, UPD765A, ΜPD765, ΜPD765A.


[1] https://en.wikipedia.org/wiki/Floppy-disk_controller

Hey! We are on Facebook now! »