Store group bus allocation system

Claim 1

A store group resource allocation arrangement distributed among a plurality of devices for systematically controlling access of the devices to a common resource, the arrangement including means (101a), included in each of said devices, for generating a request signal (REQA), store group circuit means (102), associated with each of said devices, responsive to the request signal for storing the request signal and for generating an arbitration enabling signal (ENABLA), and an arbiter (103) responsive to the arbitration enabling signal for generating a corresponding access grant signal (GRANTA) according to a prescribed criterion, the arrangement characterized by, a source of a clock signal having first and second states, the store group circuit means being responsive also to the clock signal for generating the arbitration enabling signal at a particular time instant corresponding to the coincidence of the presence of the request signal and the clock signal changing from the first state to the second state, means (110), associated with each of said devices, responsive to the arbitration enabling signal from the store group circuit means associated with each device of the plurality of said devices for temporarily inhibiting storage of a later generated request signal by each store group circuit means, and the store group circuit means being responsive to the access grant signal for disabling generation of the corresponding arbitration enabling signal.