US 4,385,349 AGranted

Central processor supervised controller system having a simulation of the controller in the central processor for test purposes

AssigneeInternational Business Machines Corporation

InventorsThomas J. Ashford, Rajan Krishnamurty, John A. Voltin

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Abstract

In a system for controlling a machine tool by a tool controller under the supervision of a central data processor, in which the controller transforms the data provided by the central processor into a format compatible with the machine tool, e.g., clock pulse encoded data format suitable for writing into and reading out of a serial storage magnetic memory device, a test system is provided wherein the central processor includes a simulation of the controller. This simulated controller gives the processor the capability of simulating and applying to the tool controller data in a format equivalent to that normally applied to the tool controller from the tool itself, e.g., a clock encoded data read output. The simulated controller also provides the central processor with the capability of receiving from the tool controller a tool control output in the format compatible with the control tool, e.g., clock encoded data and changing said data into an original format usable in the central processor.

Claims3

Dependent claims

In a system for the recording of data in a serial storage magnetic medium memory device comprising a central processor for controlling the recording of said data in said memory and a serial magnetic memory controller responsive to commands from said central processor for controlling the serial reading of data from and the serial writing of data into said storage device, the improvement wherein the system includes means independent of said serial storage device for testing the responsiveness of the controller in said writing and reading of data comprising

means in said central processor for simulating storage device serial read data including encoded clock data and for applying said data to said controller,
means for applying the outputs of said controller in response to said simulated read data back to said central processor
means in said central processor for applying simulated write commands to said controller
means for applying the serial write output of said controller in response to said write commands back to said central processor,
means in said controller for encoding clock data into said serial write output, and
means in said central processor responsive to said controller outputs applied back to said processor for determining said controller responsiveness.

3 more elements

Dependencies are inferred from the claim text.