Remote simulation by remote control from a computer desk
First Claim
1. A data processing system (DPU) having a plurality of distributed data processing units interconnected to a remote central test and monitor station, said central test and monitor station having sending means for successively sending a first series of specific commands to a distributed data processing unit, each distributed data processing unit having(a) a control panel,(b) processing means for processing instructions of a standard instruction set,(c) a simulation unit having(c1) storage means for receiving and storing said first series of specific commands emanated from said central test and monitor station as diagnostic commands, including such diagnostic commands for the diagnostics of the control panel, to be processed in said processing means in lieu of instructions from said standard instruction set,(c2) a microprogrammed logic unit interconnecting said storage means and said processing means for decoding each diagnostic command, as a sequence of at least one microinstruction to be stepwise processed in said processing means (CDCS),(c3) modifying means connected to said storage means and said microprogrammed logic unit under control of an external signal for modifying the storage content of said storage means and/or a decoding function in said microprogrammed logic unit to effect storing and execution of a second series of specific commands as diagnostic commands, which second series is different from said first series of specific commands,(c4) transmitting means for transmitting a processing result of processing a specific command of either said first or said second series to said central test and monitor station,and wherein said central test and monitor station has furthermore testing and monitoring means for testing and monitoring a processing result received from a distributed data processing unit.
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Abstract
A data processing system, comprising several distributed processing units which are connected to a remote central monitor and test station in which the state of each distributed processing unit is monitored by the transmission of test and diagnostic signals. Each processing unit comprises a simulation unit which comprises a microprocessor and test sequences for decoding and simulating these commands and, after their execution by the central unit of the processing unit, for transmitting the results to the central station for analysis. Moreover, the simulation unit is capable of detecting errors in the simulation and the execution of the commands and of supplying the central station with a warning.
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Citations
17 Claims
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1. A data processing system (DPU) having a plurality of distributed data processing units interconnected to a remote central test and monitor station, said central test and monitor station having sending means for successively sending a first series of specific commands to a distributed data processing unit, each distributed data processing unit having
(a) a control panel, (b) processing means for processing instructions of a standard instruction set, (c) a simulation unit having (c1) storage means for receiving and storing said first series of specific commands emanated from said central test and monitor station as diagnostic commands, including such diagnostic commands for the diagnostics of the control panel, to be processed in said processing means in lieu of instructions from said standard instruction set, (c2) a microprogrammed logic unit interconnecting said storage means and said processing means for decoding each diagnostic command, as a sequence of at least one microinstruction to be stepwise processed in said processing means (CDCS), (c3) modifying means connected to said storage means and said microprogrammed logic unit under control of an external signal for modifying the storage content of said storage means and/or a decoding function in said microprogrammed logic unit to effect storing and execution of a second series of specific commands as diagnostic commands, which second series is different from said first series of specific commands, (c4) transmitting means for transmitting a processing result of processing a specific command of either said first or said second series to said central test and monitor station, and wherein said central test and monitor station has furthermore testing and monitoring means for testing and monitoring a processing result received from a distributed data processing unit.
Specification