Abstract: A relocatable segment list builder, a system image dump driver, and a system image dump saver are provided to a dynamically configurable operating system being executed on a computer system. The operating system includes a root executable segment and a number of pageable relocatable segments that are loaded on an as needed basis. The relocatable segment list builder maintains in memory a non-pageable relocatable segment list, which comprises names of the relocatable segments that are loaded in any particular point in time. The system image dump driver dumps an image of the operating system including the non-pageable relocatable segment list to a dump device at the time of a system crash. In addition, a system image saver is provided to the computer system. The system image saver builds a system image dump file, which comprises the relocatable segment list dumped using the operating system image dumped.

Abstract: Device for the testing and checking of the operation of blocks within an integrated circuit, characterized in that it is formed from a set of shift registers and logic circuits associated with each block of the circuit to be tested, the set of registers including at least one test register (35), one status register (36) and one mask register (37), the status register (36) being connected to the outputs (ST0 to ST15) of the block to be tested while the test and mask registers (35,37) and the logic circuits (38,39) are connected to a central processing unit (1) of the integrated circuit of which the blocks form part, the central processing unit (1) being also connected to the said blocks (7,10) by a common interrupt line (.SIGMA.INT).