JPS63132362A - Command operation control system - Google Patents

Abstract

PURPOSE:To execute a maintenance control operation without applying an influence to a chain operation by executing the command of a maintenance control system in the idle time of the chain operation. CONSTITUTION:A sequencer 4 permits an interruption by the maintenance control system command through an interruption factor register 3c when for instance, an event queuing such as a data receiving queuing from a line side is generated and another command can be received during the execution of one write/read command. Accordingly, at that time, the maintenance control system command is inputted to a command register 1 and the decoded result thereof is stored in the interruption factor register 3c, and then, the interruption through said maintenance control system command is received in the idle time of said even queuing, a namely, the chain operation and after the maintenance control system command execution is completed according to the interruption processing, the interruption of the maintenance control system command is not permitted to be returned.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a command operation control method for a control device that performs a specified command operation under a central processing unit [Prior Art] Common line signaling device in a telephone exchange system A control device such as the above usually has an ink face with the central processing unit and a function to access the main memory in direct access mode after starting a command from the central processing unit, and is specified by a chain instruction from the central processing unit. Configured to execute commands sequentially. However, conventional devices have not had a function of processing commands different from the commands to be chained independently of the chain operation while the specific commands sent from the central processing unit are being continuously operated in response to a chain instruction.

[Problem that the invention seeks to solve]

In this way, in the past, it was not possible to perform other command operations while the command chain was operating.
For example, if you want to check the operating status of a write/read command using another maintenance control system command while a write command or read command is in operation, first cut off the chain instruction and then process the normal end via central processing. After checking on the device side, it was necessary to send maintenance control system commands to the control device to confirm normal completion, and then start the chain of write/read commands again.

However, since the reason for performing the chain operation is to execute a plurality of commands in succession, breaking the chain during the chain operation may interfere with the original processing of the control device. In particular, in devices such as common line signaling devices that must constantly receive data on the line side, breaking the chain during a read command chain operation will directly lead to link breakage. For these reasons, conventional systems have had the disadvantage that it is difficult to regularly collect maintenance status information.

The present invention has been made in view of these circumstances,
The purpose is to enable maintenance control system commands to be executed during continuous operation using chain instructions without affecting chain operation, and to enable periodic collection of maintenance status information. be.

[Means for Solving the Problems] In order to achieve the above object, the present invention stores maintenance control system commands in a control device that continuously executes specific commands based on chain instructions from a central processing unit. An interrupt cause register is provided, and if a maintenance control command is stored in the interrupt cause register during an idle time during chain operation of the specific command, the maintenance control command is used in the idle time. I'm trying to get it to run.

[Effect]

Breaking the chain by unconditionally intervening another command between a command and the command chained to it during a chain operation will inhibit the original chain operation, but If a certain command has free time such as waiting for an event, even if a maintenance control command is executed during that free time, if the execution time of this command falls within the free time above, the chain operation will be hindered. By employing the above configuration, maintenance control operations can be performed without reducing the processing capacity of the control device.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram of a common line signal device to which an embodiment of the present invention is applied, in which 1 is a command register that temporarily stores commands from a central processing unit (not shown), and 2 is a decoder that decodes commands in command register I. Then, the result of decoding the write command is stored in the interrupt factor register 3a,
The decoding result of the read command is stored in the interrupt cause register 3b, and the decoding result of the maintenance control system command is stored in the interrupt cause register 3c. Each interrupt factor register 3a to 3c
The contents of are added to the sequencer 4 via the gate circuit 5. The sequencer 4 includes a test circuit 6 that determines firmware jump conditions, and a control memory 7 that stores firmware necessary for read-related processing and write-related processing by write commands, read commands, etc., and firmware necessary for maintenance control system processing. are connected, and the output of the control memory 7 is connected to an arithmetic unit (ALU) 8. Line control circuit (L-
CTL) 12 and an ink face 13 to a central processing unit (not shown). The arithmetic circuit 8 and the buffer memory 9 are operated by an operant node 10. A line control circuit 12 is connected to the arithmetic result output bus 11 and performs processing on the line side (not shown). Further, although not shown in FIG. 2, the main storage device is provided with a function of accessing the main storage device in a direct access mode after a command is activated from the central processing unit.

In FIG. 2, when a read command is added to command register 1 by a chain instruction from a central processing unit (not shown), its contents are decoded by decoder 2 and set in interrupt factor register 3b, and sequencer 4 Sequence processing that matches the content is started, and read-related processing is performed.

When the execution of one read command is completed, a completion report is sent from the control memory 7 to the central processing unit via the ink face 13, and when the next read command to be chained is input to the command register 1, the above Similar operations are performed continuously. A chain operation by a write command is performed in the same manner.

Now, when the sequencer 4 waits for an event such as waiting for data reception from the line side while executing one write/read command and becomes ready to accept another command, as shown in FIG. Interrupts caused by maintenance control commands are enabled using the interrupt factor register 3C. Therefore, at this time, assuming that a maintenance control command is input to the command register 1 and its decoding result is stored in the interrupt cause register 3C, an interrupt caused by the maintenance control command is generated while waiting for the above event, that is, during the idle time of the chain operation. The maintenance control system command is accepted and executed by interrupt processing as shown in FIG. After the execution of the maintenance control command is completed, interrupts of the maintenance control command are not permitted and the process returns. Note that maintenance control commands include collecting information on each part of the device to check the operating status of write/read commands, etc., and sending it to the central processing unit via the interface 13 or saving it to the internal memory of the device. Commands such as are used.

〔Effect of the invention〕

As explained above, the present invention allows maintenance control system commands to be executed during idle time during chain operation, without affecting the chain operation, that is, without reducing the processing capacity of the control device. This makes it possible to perform maintenance control operations.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the operation of the present invention, and FIG. 2 is a block diagram of a common line signaling device to which an embodiment of the present invention is applied. In the figure, 1... Command register, 2... Decoder, 3a to 3C... Interrupt factor register, 4... Sequencer, 5... Gate circuit, 6... Test circuit,
7... Control memory, 8... Arithmetic circuit, 9... Puffer memory, 10... Operand bus, 11... Arithmetic result output bus, 12... Line control circuit, 13...
ink face.

Claims (1)

[Scope of Claims] In a control device that successively executes specific commands in response to chain instructions from a central processing unit, an interrupt cause register is provided for storing maintenance control system commands, and during the chain operation of the specific commands, Command operation control characterized in that, if a maintenance control command is stored in the interrupt factor register during a free time, the maintenance control command is executed using the free time. method.