JPH04120646A - Initializing system - Google Patents

Abstract

PURPOSE:To simultaneously initialize all processors to reduce the initializing time by providing identification numbers which become valid to all processors connected to a data bus for diagnosis. CONSTITUTION:Processor identification numbers are respectively given to processors 11 and 12-1n and the processor ID check circuit 1 of each processor 11 and 12-1n is set so that the circuit 1 can detect the processor identification number and a common identification number given to its own processor. When a diagnostic processor 10 sends one processor identification number, the circuit 1 of the processor 11 detects the number and gives enable signals to a driver circuit 3 and answer output circuit 2 and the circuit 2 sends an answer to the processor 10 through an identification number circuit. The processor 10 recognizes that the processor 10 has received the answer from the processor 11 and starts communication with the processor 11. Then data including commands are received by all processors and the processors are respectively initialized.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an initial value setting method, particularly an initial value setting method for setting initial values from a diagnostic processor to each processor of an information processing device having a multiprocessor configuration via a diagnostic hash. Regarding the setting method.

[Conventional technology]

Conventionally, in this type of initial value setting method, each processor has a unique processor identification number, and a diagnostic processor sends out the processor identification number to identify a specific processor.
A processor 1 sends an initial value take after entering a communication letter for a peer, sends a processor identification number to the next processor after completing the initial value setting of that processor, and performs the above operations. Initial values are set for each machine.

[Problem to be solved by the invention]

The above-mentioned conventional initial value setting method sets an initial value for one processor, so it has the disadvantage that it takes a lot of time to set the initial value when the number of processors increases.

[Means to solve the problem]

The initial value setting method of the present invention is an initial value setting method in which an initial value is set from a diagnostic processor to each processor in a multiprocessor configuration via a diagnostic bus. an identification number checking means provided in each processor for detecting a common identification number given to the processor and the common identification number sent from the diagnostic processor via the diagnostic lotus;
response output means for sending the unique processor number to the diagnostic processor when the identification number checking means detects the common identification number; and an initial value sending means for sending an initial setting value to the diagnostic bus when receiving a processor number of a certain processor.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. The embodiment of FIG. 1 includes a diagnostic processor 10 and zero processors 1.
1.12 to 1n are a data bus 20 for sending data from the diagnostic processor 10 to each processor, and each processor...
A data bus 30 for sending data to the diagnostic processor 10 connects the diagnostic processor 10 to the diagnostic processor 10. Each processor receives a processor ID check circuit 1 connected to a data bus 20 and checks a processor identification number, and an enable signal output when the processor ID check circuit 1 detects a designated processor identification number. It has a response output circuit 2 that sends its own processor identification number to the data bus 30.

In the above configuration, each of the processors 11.12 to 1n has a processor identification number, for example, number 11, number 12 to
The processor ID check circuit 1 of each of the processors 11.12 to 1n is set to detect an identification number common to the processor identification number given to its own processor, for example, number 20.

Here, when the diagnostic processor 10 sends the processor identification number 11 via the data bus 20, for example, the processor ID check circuit 1 of the processor 1
No. 1 is detected and an enable signal is given to the driver circuit 3 and response output circuit 2. Therefore, the response output circuit 2 sends the processor identification number 11 to the diagnostic processor 10 via the driver circuit 3 and the data bus 30. 11
The diagnostic processor 10 that received the number starts communication with the processor 11, assuming that it has received a response from the processor 11.

On the other hand, the diagnostic processor 10 via the data bus 20
When the identification number 20 is sent, all processors 11
,12. ~1n processor ID check circuit 1 or this number 20 is detected and an enable signal is given to the driver circuit 3 and response output circuit 2, respectively. Therefore, the response output circuit 2 sends out the identification number of its own processor via the driver circuit 3 and the data bus 30, respectively. At this time, the contention on the data bus 30 is similar to normal contention, and is carried out by a predetermined means, such that after one processor finishes sending data, the next processor starts sending data. When the diagnostic processor 10 has finished receiving all the processor identification numbers from the data bus 30, it assumes that all processors are ready and sends a command assistance indicating initial value setting following a communication start command via the data bus 20. Information and further initial value data are sent. The data following these commands is received by all processors and performs initial value setting within each processor.

〔Effect of the invention〕

As explained above, by providing an identification number that is valid for all processors connected to a diagnostic data bus, the present invention allows initial values to be set for all processors at the same time. This has the effect of reducing the time required.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Processor ID check circuit, 2... Response output circuit, 3... Driver circuit, 10... Diagnostic processor, 11, 12-In-processor, 20.3
0...Data bus.

Claims (1)

[Claims] In an initial value setting method in which initial values are set from a diagnostic processor to each processor in a multiprocessor configuration via a diagnostic bus, a processor identification number uniquely given to each processor, a common identification number given to each processor, identification number checking means provided in each processor for detecting the common identification number sent from the diagnostic processor via the diagnostic bus; and when the identification number checking means detects the common identification number, the unique response output means for sending the processor number of the processor to the diagnostic processor;
and initial value sending means for sending the initial setting value to the diagnostic bus when unique processor numbers are received from all the processors after outputting the common identification number to the diagnostic bus. .