Abstract: A method for communicating active messages among nodes of a parallel processing computer system is disclosed. The active messages are defined by .mu.threads, and the method comprises the steps of: (a) generating a .mu.thread comprising an instruction pointer, frame pointer, and Local Parameters pointer from a first node to a second node; and (b) performing a procedure on a data structure in accordance with the .mu.thread. The instruction pointer points to an application specific procedure in system memory, and the frame pointer points to an application specific data structure in system memory. The Local Parameters pointer points to one or more words of additional data or parameters stored in memory mapped device registers or system memory.

Abstract: An improved quadrature phase shift key modulator circuit of the type which includes a non-linear amplifier in the transmitter and includes a frequency select logic circuit for receiving the in phase and quadrature phase digital data to be modulated onto a carrier frequency signal. The output of the frequency select circuit produces select signals that are coupled to the input of a digital carrier frequency generator. The digital carrier frequency generator synthesizes and increases, decreases, or leaves unchanged the carrier frequency as a representation of the data occurring on the in phase and quadrature phase input lines. The output of the digital carrier frequency generator is smoothed and converted to an analog signal which has a constant vector power magnitude during phase change.

Abstract: Microcode is loaded into, for example, a processor or I/O module within a computer system without manually halting and restarting the computer system. In other words, microcode can be loaded into the computer system dynamically while data processing continues from the processor or I/O module states just prior to the microcode load with no major interruption to the user. A microcode image is loaded into a processor which is already executing one or more tasks. A request to load microcode into the processor is received. The processor is signalled to suspend task execution. After the microcode image is transferred into the processor, the processor is signalled to resume task execution.