摘要:
Control unit (Cm) for a central memory (115) of a computer system capable of generating sequences of commands for the said memory (115), each sequence comprising a plurality of commands separated from each other according to a timing defined by periods of a clock signal, in which the control unit (Cm) includes means (230, 233) for programming the timings of the command sequences in the control unit (Cm) installed in the computer system (100).
摘要:
Method (T1-T13) for reading data in a computer system comprising a plurality of processors and a shared memory, at least one of the processors having a cache memory for storing corresponding data of the shared memory, the method comprising the steps of requesting (T1-T3) the reading of a data element from the shared memory by a requesting processor, reading (T4-T13) the requested data element from the shared memory and, in parallel, checking whether the requested data element is present in modified form in the cache memory of each processor other than the requesting processor, interrupting (T13) the reading of the requested data element from the shared memory if it is not ascertained (T11) that the requested data element is not present in modified form in the cache memory of any processor other than the requesting processor.
摘要:
Interface bridge (13) between a system bus (ASBUS) and at least one local bus (11, 12), the system space directly addressable through said system bus being greater than the system space directly addressable through the local bus, comprising a plurality of programmable decoders (17, 18, 19) each of which defines a distinct range within the range directly addressable through the local bus, and a range attribute as range of local bus addresses to be translated or to be transferred directly to the system bus and also identifies a local bus address as being included or otherwise within the range, so that depending on whether the local bus address belongs to one of the ranges or not and on the range attribute, the local bus address is transferred to the system bus as a direct address or as an address translated by a translation logic (20, 21) and capable of addressing the entire system space.
摘要:
A memory access limiter for random access dynamic memory of data processing systems formed by several modules (MM1, ... MMN) which can be independently activated in partial temporal superimposition, each by a memory start command (START.M), comprising a bidirectional counter (3, 15) which periodically increments at a constant period defined by a clock signal (CLK), by a value representative of the electrical charge delivered by a power supply (1) to an output buffer capacitor (2) and decrements, at each memory start command, by a value representative of the electrical charge drained at each memory operation activated by the memory start command, a predetermined decremented count state of the counter identifying a maximum admissible discharge condition of the buffer capacitor below which it is necessary to inhibit any further activation of the memory until the count state of the counter is no longer below the predetermined count state.
摘要:
A highly efficient releasable mount heat-sink for a very large scale integrated circuit comprises a single piece (1) of a high thermal conductivity material formed of two mutually parallel plates (3,4) interconnected by a plurality of fins (2) lying across said plates to form a plurality of ducts for a refrigerating gas flow, the piece being formed with a plurality of housings (5,6,7,8) for means (16,17,18,19,20,21) of securing the heat-sink on a support (15) of the integrated circuit (14) with one (3) of the plates in contact with the integrated circuit (14).
摘要:
Electronic system architecture for electronic document annotation by hypermedia processable and active annotations, comprising a data processing system, (4,5,6,7,8,9) having at least a user terminal (1,2,3) an operating system (16) for information managing according to a plurality of structural models, navigation means (13,14,15) for navigation from anchors in an information structure, documents in particular, editing means (11,12) activated from terminal for getting access to the documents through the navigation means (13,14,15) and annotation means (17,18,19,20) coupled to the navigation means (13), to the terminal (1,2,3) and to the operating system (16) for creating and processing annotations comprising contents, treated as a linkable node (23) of the information structure and a set of entities-relations, structured in accordance to an entity-relation model, the set being connected to the node, so that each annotation is retrievable through the navigation means (13,14,15) and is further retrievable and processable by the annotation means (17,18,19) according to relational criteria and, based on events, identified as entities of the annotation structured set, automatically starts processes such as note deletion or notification to an addressee.
摘要:
A variable interleaving level memory wherein a plurality of independently addressable storage modules are present in a number between 1 and a maximum, comprising a circuit means (14) which, according to the number of the modules present and their capacity, responds to a first field of least-weight address bits (ALOW) and a second field of greater-weight address bits (AHIGH) input thereto by generating a module selection signal for selecting from the various modules present and a plurality of signals (MBIT) representing module address bits, thereby configuring the memory with the highest levels of interleaving and for maximum storage capacity, as allowed for by the number and capacity of the modules present and properly addressing each time the selected module.