µPD765 - Floppy Disc Controller (used in CPC 664, CPC 6128, 6128 Plus and [[DDI-1]] expansion).
Besides the Amstrad CPC, this chip equipped the [[PCW|Amstrad PCW]], the [[ZX Spectrum|ZX Spectrum +3]], the [[SC-3000|Sega SC-3000]], [[NEC PC-98]], and the [[PC|IBM PC]] (including [[Amstrad PC]]).
The recommended ports used by Amstrad and compatible interfaces are:
=== Other Variants ===
NEC has developed various successors to the original uPD765, such as the uPD72065 (used in the [[Sharp X68000]]), uPD72067, and uPD72069.
Intel has also produced successors of the 8272, such as the 82072, 82077 and 82078.
The КР1810ВГ72А is a Soviet clone of the Intel i8272. It is used in the [[Aleste 520EX]] clone of the Amstrad CPC computer.
The [https://map.grauw.nl/resources/disk/toshiba_tc8566af.pdf Toshiba TC8566AF] is also a variant of the FDC765.
=== Competitors ===
* [[Tatung Einstein]] uses the WD1770 FDC chip
Third-party 3inch floppy disk drives (like the Amdek Amdisk ) were also available for many systems: Apple II, Atari 8-bit, Tandy CoCo, BBC Micro, etc..
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* [[Media:UPD765_App_Note_Mar79.pdf| NEC uPD765 Datasheet preliminary (1979)]] [[Media:D765 NEC.pdf]] [[Media:UPD765-NEC.pdf]] [[Media:Z765A datasheet.pdf]] - uPD765 disc controller
* [[Media:Intel 8272A Datasheet preliminary (1982).pdf]] [[Media:Datasheet.hk_d8272a_2873060.pdf|Intel 8272A Datasheet (1986)]] [[Media:Floppy Disk Controller(FDC) UM8272A UM8272A-4.pdf]] - Licensed clone of the uPD765
* [[Media:WD37C65 datasheet.pdf]] - NEC 765 controller clone with onboard data seperator and AT/EISA compatibility
* [[Media:TN6-1 9216 Floppy Disk Data Separator Jun82.pdf]] [[Media:FDC9216 datasheet.PDF]] [[Media:SED9420.pdf]] - Data separators
* [[Media:DDI Schematic.png]] - DDI-1 Schematic (disc interface for CPC464)