Method and apparatus for controlling software configurations in

Details Method and apparatus for controlling software configurations in Method and apparatus for controlling software configurations in

1983-09-12

1986-05-20

Thomas, James D.

Boots, shoes, and leggings

G06F 906, G06F 1214

Patent

active

045905576

ABSTRACT:
A data processing system including a method and apparatus for controlling software configurations. A plurality of software programs and routines are stored in a mass storage device. Which software accessed by the system is controlled by non-volatile information stored in the system. The system also includes a portable media storage device, such as a floppy disk drive, and fixed information which loads a preselected portion of the portable media into the system. Two portable media are also provided. The preselected portion of the first portable media contains a bootstrap program which loads an operating system into the system. The preselected portion of the second portable media contains a program for altering the non-volatile information stored in the system so as to change the software configuration which may be accessed by the system. The program then erases the preselected portion of the second portable media after execution. In a preferred embodiment, the program also includes a counter containing a preselected number which is decremented after each time the program is executed and the program does not erase the preselected region until the counter reaches zero.

REFERENCES:
patent: 4014005 (1977-03-01), Fox et al.
patent: 4446519 (1984-05-01), Thomas
patent: 4481578 (1984-11-01), Hughes et al.
patent: 4497021 (1985-01-01), Fukuda et al.
patent: 4497040 (1985-01-01), Gomes et al.

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