| 摘要 |
<p>1. Method for the exchange of data between processing modules and at least one common memory, in a data-processing system consisting in multiplexing, on a bus connecting the modules and the common memory, at least one assembly of addresses (BA0 to BA31) and at least one assembly of data (BD0 to BD31) corresponding to said addresses, such that the assembly of data is transmitted after the assembly of addresses, in also multiplexing on the one hand of arbitration requests for access requirements to the bus (R0 to R7) provided by arbitration assemblies which respectively correspond to the processing modules and which are connected to the bus, and, on the other hand, of assemblies of addresses (BA0 to BA31) and of data (BD0 to BD31), in transmitting on the bus control signals (~B~R~Z~T, ~B~U~S ~H~A~L~T, ~B~U~S ~A~L~A~R~M~E, ~B~T~S~T) of the system modules, said control signals comprising signals (~B~R~Z~T) indicating restoration of current after interruption of electric supply to the modules, (~B ~H~A~L~T) indicating stopping of one or more modules, (~B ~A~L~A~R~M~E) indicating alarm due to a defect in operation of one or more modules, (~B~T~S~T) of interruption of all modules for tests, the different modules being synchronised by interruption signals transmitted on the bus, the interruption signals comprising a signal (~B ~A~P~P~E~L ~1) of complete interruption of the system, said signal being provided by one module and transmitted to all the others and memorised in a receiver of each of the modules, and a signal (~B ~A~P~P~E~L ~2) of complete interruption and the end of the task effected by the system, said signal being memorised in a transmitter of one module, and the interruption signals additionally comprising a signal (~B~M~A~S~Q) provided by one module to mask the interruption signals provided by the other modules, a signal (~B~R~T~A~S) for restoring to zero the local multivibrators in each module to indicate that the common memory ist not available.</p> |
