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When the controller and disk drive are assembled as one device, as it is the case with some external floppy disk drives, e.g., Commodore 1540 and USB floppy disk drives, [27] the internal floppy disk drive and its interface are unchanged, while the assembled device presents a different interface such as IEEE-488, parallel port or USB.
Part of a Mk3 (red/black audio cables) The Catweasel is a family of enhanced floppy-disk controllers from German company Individual Computers.These controllers are designed to allow more recent computers, such as PCs, to access a wide variety of older or non-native disk formats using standard floppy drives.
Seagate ST11R, an 8-bit ISA RLL hard disk controller produced in 1990. 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 an interface between the disk drive and the bus connecting it to the rest of the system. [1] [2]
Western Digital datasheet for the FD1771 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 density FM encoding introduced in the IBM 3740.
In 1982, Cromemco introduced a Motorola 68000 CPU card for their systems. It was a dual-processor card (called the DPU) with both a Motorola 68000 processor and a Zilog Z-80 processor (for backward compatibility). [23] Their System One, Two, and Three computers evolved to the 100-series, 200-series, and 300-series respectively.
Alongside the release of the Macintosh SE & Macintosh II, Apple released the Apple PC 5.25" Drive which required a separate custom PC 5.25 Floppy Disk Controller Card, different for each Mac model. It is the only 5 + 1 ⁄ 4 -inch drive manufactured by Apple that can be used by the Macintosh.
3.5-inch and 5.25-inch drives connect to the floppy controller using a 34-conductor flat ribbon cable for signal and control. Most controllers support two floppy drives, although the Shugart standard supports up to four drives attached to a single controller. A cable could have 5.25-inch style connectors, 3.5-inch style connectors, or a ...
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 and other IEEE 696 computers. It also contains an RS-232 serial I/O channel with software-selectable baud rates from 110 to 76,800.
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