Abstract: Apparatus for forming a sequence in a direct memory access controller. The apparatus includes a microprogram-controlled sequencer for selecting microaddresses, a software decoder connected to the sequencer for testing presence of jump conditions and for preparing a corresponding jump address, a map decoder connected to the sequencer for testing map conditions and for providing a map address, a test register connected to the sequencer for providing a test address, and apparatus for generating a continue-address connected to the sequencer. The jump conditions, the jump addresses and the map conditions are contained in microcommands of the microprogram.

Abstract: A device for supplying microcommands for at least two mutually independent functional units in an integrated microprogrammed electronic module. The device includes a respective microcommand address register and a respective microinstruction register for each of the functional units, and a memory arrangement connected to the functional units which includes at least one microcommand memory, wherein the number of the functional units is greater than the number of microcommand memories, and a method of operating the device.

Abstract: A Dynamic Memory Access (DMA) control device for transmitting data between a data transmitter and a data receiver via an external bus formed of a data bus, an address bus and a control bus, and has a multiplicity of data transmitters/receivers and at least one microprocessor connected thereto. The transmission of the data in the external bus depends upon a channel program containing channel transfer commands and channel control commands, and includes a central control unit for addressing, dependent upon a channel command, a microcommand, address and control signals corresponding to the microcommand on an internal address-control bus; an address unit is connected to the internal address/control bus and to an internal data bus wherein addresses of a data transmitter, data receiver and the channel program are stored.

Abstract: An apparatus for testing a highly-integrated microprogram-controlled electronic component in combination with the component, includes a sequencer disposed in the component for forming microprogram sequence links, and a test register disposed in the component having outputs connected to the sequencer for controlling a test, the test register having an input being connectible to a central processing unit and to an external testing device.

Abstract: An integrated microprogrammed device for controlling information processing cycles, includes a device for generating one or more T-states in dependence on preceding T-states and on given parameters and a method for operating the device.