Abstract: A computer-based software task management system includes an index register configured to store a data register pointer for pointing to a data register. A Task ID register is coupled to the index register and configured to store a Task ID keyed to the index register. A Task ID memory is coupled to the Task ID register and configured to store a flag indicating whether the Task ID is available. A state machine is coupled to the Task ID memory and configured to allocate Task IDs on an available basis using a task ID memory.

Abstract: A computer-based software task management system (100) includes an index register (130) configured to store a data register pointer for pointing to a data register (150). A Task ID register (110) is coupled to the index register and configured to store a Task ID keyed to the index register. A Task ID memory (120) is coupled to the Task ID register and configured to store a flag indicating whether the Task ID is available. A state machine (105) is coupled to the Task ID memory and configured to allocate Task IDs on an available basis using a Task ID memory. Advantages of the invention include the ability to efficiently manage a multithreaded operating system with virtually no additional software overhead.

Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Abstract: A process for removing a chlorinated methane impurity from a stream comprising a halogenated compound other than the chlorinated methane impurity, the process comprising contacting the stream with a polymer adsorbent to produce a purified product stream, the polymer adsorbent having a pore size distribution characterized by a higher cumulative porosity as a function of the log of pore diameter than that of activated carbon.

Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Abstract: Various enhancements may be made to a DMA controller to optimize the DMA controller for use in non-uniform DMA applications such as Universal Serial Bus (USB) applications. First, a DMA count register that is used to store a count value that controls the length of a data transfer over a DMA channel may be capable of being selectively disabled, such that when the DMA count register is disabled, a DMA control circuit may perform a data transfer independent of the DMA count register. An endpoint watchdog timer may also be coupled to a DMA control circuit and configured to generate an interrupt if no data is received by the DMA channel within a predetermined period of time. In addition, a DMA control circuit may incorporate partial word hold off functionality to delay transmission of a final word of data from a data packet if the final word is a partial word.

Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Abstract: The invention relates to integral skin foams and in particular to integral skin foams that are prepared using 1,1,1,3,3-pentafluoropropane (HFA-245fa) alone or in combination with water as the blowing agent. The foams exhibit physical characteristics such as resistance to abrasion and cracking on flex comparable to conventional chlorinated fluorocarbon blown foams. The foams of the present invention are suitable for use in many applications including, for example, shoe soles.

Abstract: A process for removing a chlorinated methane impurity from a stream comprising a halogenated compound other than the chlorinated methane impurity, the process comprising contacting the stream with a polymer adsorbent to produce a purified product stream, the polymer adsorbent having a pore size distribution characterized by a higher cumulative porosity as a function of the log of pore diameter than that of activated carbon.

Abstract: The present invention relates to novel compositions of drying agents of superabsorbent polymers, molecular sieves and mixtures thereof and binders of polyurethane foam, polyisocyanurate foam and supports comprising cellulose and a method for separating, drying and/or filtering chemical mixtures. The composition and method of the invention have broad applicability. They may be used for example to remove water from chemical mixtures like refrigerants (e.g., in vehicular refrigeration systems), air (e.g., in vehicular braking systems), natural gas and cleaning solvents (e.g., used in semiconductor manufacture and pipeline cleaning).

Abstract: A system for preventing bus contention in a multifunction integrated circuit under testing. The system is implemented in an integrated circuit adapted to accept a series of test inputs operable for testing the functionality of the integrated circuit. The integrated circuit includes at least one bus for communicatively coupling the multiple functional blocks. At least a first functional block and a second functional block included in the integrated circuit, the first functional block and the second functional block both coupled to the bus and coupled to accept the test inputs. An output enable controller is also included in the integrated circuit. The output enable controller is coupled to the second functional block and is operable to disable at least one output of the second functional block if a corresponding output of the first functional block is activated.

Abstract: A system for preventing bus contention in a multifunction integrated circuit during testing. The system is implemented in an integrated circuit adapted to accept a series of test inputs operable for testing the functionality of the integrated circuit. The integrated circuit includes at least one bus for communicatively coupling the multiple functional blocks. At least a first functional block and a second functional block included in the integrated circuit, the first functional block and the second functional block both coupled to the bus and coupled to accept the test inputs. A bus arbiter is also included in the integrated circuit for granting ownership of the bus. The bus arbiter is operable to disable at least one output of the second functional block if a corresponding output of the first functional block is activated by using a bus grant signal generated for the first functional block.

Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Abstract: This invention provides compositions of 1,1,1,3,3-pentafluoropropane, water and at least one hydrocarbon selected from the group consisting of n-pentane, isopentane, cyclopentane and hexane that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Abstract: The invention relates to integral skin foams and in particular to integral skin foams that are prepared using 1,1,1,3,3-pentafluoropropane (HFA-245fa) alone or in combination with water as the blowing agent. The foams exhibit physical characteristics such as resistance to abrasion and cracking on flex comparable to conventional chlorinated fluorocarbon blown foams. The foams of the present invention are suitable for use in many applications including, for example, shoe soles.

Abstract: The invention relates to polyurethane and polyisocyanurate closed-cell foams. More particularly, the invention relates to polyurethane and polyisocyanurate closed-cell foams prepared with a blowing agent comprising 1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124) and 1,1-dichloro-1-fluoroethane (HCFC-141b). Foams prepared with the blowing agent of the invention possess improved thermal performance.

Abstract: The invention relates to polyurethane and polyisocyanurate closed-cell foams. More particularly, the invention relates to polyurethane and polyisocyanurate closed-cell foams prepared with a blowing agent comprising 1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124) and 1,1-dichloro-1-fluoroethane (HCFC-141b). Foams prepared with the blowing agent of the invention possess improved thermal performance.

Abstract: A non-aqueous cleaning process uses an organic solvent for removing soil or surface contamination from contaminated articles such as printed circuit boards which are cleaned by immersion into a sump compartment of a cleaning tank containing the organic cleaning solvent. The organic solvent is preferably a hydrocarbon solvent. The cleaned articles, now coated with the organic cleaning solvent, are then disposed in a rinsing sump containing a fluorocarbon based rinsing solvent having an affinity for the organic cleaning solvent. The organic solvent is thus removed from the articles which are then dried without waste water as in a conventional solvent vapor degreasing solvent process.

Abstract: This invention provides compositions of 1,1,1,3,3-pentafluoropropane, water and at least one hydrocarbon selected from the group consisting of n-pentane, isopentane, cyclopentane and hexane that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.