System for controlling storage device for storing data at second

Details System for controlling storage device for storing data at second System for controlling storage device for storing data at second

1995-12-06

1996-11-19

Lee, Thomas C.

Dynamic magnetic information storage or retrieval

Head

Core

395438, 395834, 360902, 3642216, 3642362, 3642548, 364DIG1, G06F 1540

Patent

active

055772340

ABSTRACT:
According to the present invention, a function can be added to a peripheral apparatus by making a change in only a few parts of a data processing system without making changes regarding hardware in, especially, a system unit nor an interface part between the system unit and the peripheral apparatus. A predetermined control signal, said signal being a signal for causing a peripheral apparatus such as a floppy disk drive to perform a first predetermined operation, is provided to said peripheral apparatus in a predetermined condition in order to cause said peripheral apparatus to perform a second predetermined operation which is different from said first predetermined condition.

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