Bull Hn Information Systems, Inc.

Bull Hn Information Systems Italia S.p.a.

Lucio Savogin

Roberto Boioli

Francesco Rendina

Carlo Munero

Interface adapter VME bus--MULTIBUS II (PSB bus) consisting of a printed circuit board comprising logic circuits for converting VME interface signals to PSB interface signals and vice versa, provided with connectors for connection to a standard VME board on one edge and to a PSB bus on the opposite edge and having a size such that when coupled to a VME standard board the size of the two coupled boards is equal to the size of a standard PSB board and can be inserted in a housing sized for a standard PSB.

VME-MULTIBUS II interface adapter for protocol conversion and for

Bus driving and decoding circuit for validating the decoding of signals put on the bus by said drivers, comprising a plurality of driver elements and a decoder connected to the bus, the drivers being grouped in at least two sets, each implemented in one integrated component having a control input for enabling the opening of the related driver set, the control input receiving an enabling signal which is further input to one driver in each integrated component, so as to obtain at the output of the one driver a validation signal (V1, V2) for the decoder, each validation signal having an intrinsic delay equal to the propagation delay of the related integrated component, the circuit comprising further a delay element, located upstream or downstream of driver elements which generate the validation signals, to provide each of the validation signals with an incremental delay sufficing to cover the propagation delay spread specific to the related integrated component, the decoder being enabled by the joint assertion of the validation signals.

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Como, Italy

Lucio Savogin