Computer with capability to automatically initialize in a first operating system of choice and reinitialize in a second operating system without computer shutdown
March 22, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTerminal configuration manager Apparatus and method for a data processing unit sharing a plurality of operating systems Processor having plural initial loading programs for loading different operating systems Method of switching operating systems for a data processing system Dual operating system computer Circuit arrangement capable of improving overhead of a control program on interrupting into a virtual machine Computer device for aiding in the development of software system Method and apparatus for controlling interrupts in a virtual machine system System for directly and indirectly accessing control registers by different operating systems based upon value of operating system indication bit Circuit arrangement capable of quickly processing an interrupt in a virtual machine operated by a plurality of operating systems InventorsApplicationNo. 497373 filed on 03/22/1990US Classes:713/1, DIGITAL DATA PROCESSING SYSTEM INITIALIZATION OR CONFIGURATION (E.G., INITIALIZING, SET UP, CONFIGURATION, OR RESETTING)713/100RECONFIGURATION (E.G., CHANGING SYSTEM SETTING)ExaminersPrimary: Hecker, Stuart N.Assistant: Pappas, George C. Attorney, Agent or FirmInternational ClassesG06F 009/445G06F 009/44 G06F 013/00 AbstractA computer system with read-only memory and permanent read/write memory provides the user with the capability of loading an alternate operating system at the conclusion of a session without turning the computer off and then on. A customization word with a system request (SR) bit is located in read/write memory and is set by routines located in ROM upon user request. A reinitialization is then forced which resets the SR bit and brings up the machine in the alternate operating system located in external memory on a diskette or fixed disk. A flexible initialization system is also disclosed providing customized initialization in a variety of operating systems and applications. The preferred customized initialization is maintained for future system start-ups due to the resetting of the SR bit. | |
