Abstract: A method of operating a computer system in an operating system test mode. The computer system comprises a processor system, a physical memory system, and a secondary storage memory system. In response to a request to access a memory address, it is determined if the memory page associated with the memory address is available in the physical memory system, and if the memory page associated with the memory address is not pinned in the virtual memory area. In response to the memory page being available in the physical memory system but not pinned in the virtual memory area, an interrupt is generated.

Abstract: A method of operating a computer system in an operating system test mode. The computer system comprises a processor system, a physical memory system, and a secondary storage memory system. In response to a request to access a memory address, it is determined if the memory page associated with the memory address is available in the physical memory system, and if the memory page associated with the memory address is not pinned in the virtual memory area. In response to the memory page being available in the physical memory system but not pinned in the virtual memory area, an interrupt is generated.

Abstract: The invention relates to a method for the production of a pigment masterbatch by extrusion, wherein a) a thermoplastic polymer in granular or powder form is metered continuously into a twin-screw extruder; b) the polymer metered in is melted in the extruder; c) a pumpable pigment press cake containing pigment, water and/or organic solvent is metered continuously into the molten polymer through an inlet port of the extruder under elevated pressure, the pressure being sufficiently high that the boiling point of the water and/or organic solvent is higher than the internal temperature of the extruder in the region of this inlet port; d) optionally a flow improver is added; e) the pigment is dispersed into the molten polymer from the press cake by the action of shear forces; f) the water and/or organic solvent are removed through at least one outlet port of the extruder, under elevated pressure, the pressure being sufficiently high that the boiling point of the water and/or organic solvent is higher than the inter