JPH0426503B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In a communication control processing device that includes at least a processor, a main memory, an external storage device (FPD), and a communication control channel, , a procedure correspondence table that stores the number of procedure control tasks necessary for the transmission control procedure of each line, a command reception APL task,
A procedure switching task and a loading task are provided, and when there is an instruction directly from the operator or through the workstation, the number of the program (procedure control task) necessary for the instructed line control is changed to correspond to the above procedure. Select from the table and load it from the external storage device (FPD) onto the main storage device,
The loaded program is made executable and the operator is notified.

[Industrial application field]

The present invention automatically executes a program group required for each line control procedure to be executed, that is, a procedure control task (specifically, the program number of each procedure control task) during system operation in a communication control processing device. This invention relates to an automatic switching method for line control procedures that are selected and loaded onto a main memory.

With the recent opening of communication lines, the number of communication services using telephone lines, such as communication between terminals and host computers, communication between personal computers, etc., is increasing. Generally, the line control procedure differs depending on the type of host computer/terminal of the communication partner.

On the other hand, as the above-mentioned communication services become more diversified, the destination terminal may be changed dynamically during the operation of the communication system, and it is difficult to effectively switch line control procedures in accordance with changes in the terminal, etc. There is a growing demand for a switching method that allows for

[Conventional technology]

FIG. 2 is a diagram showing a conventional switching method for line control procedures.

Generally, the processor of the communication control processing device can perform specific line control through the communication control channel by executing a specific program group (procedure control task group), but in this specification, For convenience of explanation, the processor and communication control channel are omitted.

First, the designer of the communication control processing system identifies the programs (procedure control tasks) required for each line control procedure a, b, and c from line control procedure correspondence table 1, and links the programs (extracts and connects them). ) 2 to create an executable target program.

Based on the created target program, system editing 3 is performed for each line control procedure, and the respective line control procedure systems a, b, and c are stored in a file memory {for example, a floppy disk (FPD)}.
Store in 4.

When performing a certain communication process, the line control procedure system necessary for the communication process is selected from the file memory (FPD) 4, initial program loading (IPL) 5 is performed, and the above-mentioned process is performed according to the loaded procedure. Operate communication processing.

[Problems to be Solved by the Invention] Therefore, in the conventional system, (1) it was necessary to perform system editing 3 for each line control procedure a, b, and c.

(2) As a result of the above editing process, line control procedures a, b,
It was necessary to prepare a separate file memory (floppy disk (FPD)) for each C.

(3) In order to switch the line control procedure, initial program loading (IDL) 5 must be loaded from each floppy disk (FPD) 4 each time the operation is performed.
must be carried out, and during operation of the system,
If it was necessary to switch line control procedures, it was necessary to interrupt system operation.

In view of the above-mentioned conventional drawbacks, the present invention aims to provide a method that can dynamically switch line control procedures during system operation without performing initial program loading (IPL). .

[Means for solving problems]

FIG. 1 is a diagram schematically showing an embodiment of the present invention. Also in this figure, the processor and communication control channel are omitted.

In the present invention, a procedure correspondence table 61 that stores the numbers of procedure control tasks necessary for the transmission control procedure of each line and a command reception application (hereinafter referred to as APL) are stored on the main memory 6. A task 62, a procedure switching task 63, and a loading task 64 are provided, and the command reception APL task 62 switches procedures based on instructions directly from the operator or through a workstation (not shown). The task 63 is started, and the procedure switching task 63 is
With reference to the procedure correspondence table 61, a loading request for a program (procedure control task) 65 necessary for line control is sent to the loading task 64.
When the loading task 64 completes loading of the program (procedure control task) 65, the procedure switching task 63 requests the command reception APL task 62 to run the program (procedure control task) 65. Configure it to notify you when it becomes available.

[Effect]

That is, according to the present invention, in a communication control processing device including at least a processor, a main memory, an external storage (FPD), and a communication control channel, on the main memory, A procedure correspondence table that stores the number of procedure control tasks necessary for the transmission control procedure of each line, a command reception APL task, a procedure switching task, and a loading task are provided. When an instruction is given through the station, the program number (procedure control task number) required for the specified line control is selected from the procedure correspondence table and loaded from the external storage device (FPD) onto the main storage device. , the loaded program (procedure control task) is put into an executable state and the operator is notified, so the system can be loaded without performing initial program loading (IPL) for each line control procedure. During operation, line control procedures can be dynamically switched and executed, and changes in the procedures can be handled simply by changing the procedure correspondence table on the main storage device.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.
The above-mentioned FIG. 1 is a diagram schematically showing an embodiment of the present invention, and includes a procedure correspondence table 61 that stores the number of procedure control tasks necessary for the transmission control procedure of each line, and a command reception table. APL task 62, procedure switching task 63, loading task 64
are the means necessary to carry out the present invention. still,
The same reference numerals indicate the same objects throughout the figures.

In Figure 1, a floppy disc (FPD)
4 stores all program groups (procedure control task group) necessary for line control procedures executed by the communication control processing system by the system designer.

First, an overview of each of the above-mentioned means necessary to carry out the present invention will be explained.

Procedure correspondence table 61: The program number (procedure control task number) required for each line control procedure is defined for each line control procedure. ) 4 to a main memory device (hereinafter referred to as main memory) 6.

The line control procedure is characterized in that it can be changed to any control procedure simply by modifying this procedure correspondence table.

Command reception APL task 62: For example, in response to a console instruction from an operator, a specific line control procedure (for example, procedure a) is sent to a procedure switching task 63, which will be described later.
It has a function to request execution.

Procedure switching task 63: Upon requesting execution of the line control procedure, the procedure correspondence table 61 in the system parameter definition table on the main memory 6 is referred to, and the necessary program (procedure control task) is transferred to the main memory 6.
Loading task 6 described below
4, and when the loading is completed, the initial parameters (operating conditions:
It has a function to pass the time monitoring timer value, terminal address, etc.) and start the procedure control task 65.

Loading task 64: Equipped with a function to load a program that is not on the main memory 6 from the external storage device (FPD) 4 to the main memory 6 in response to a loading request for a program (procedure control task) from the procedure switching task 63 mentioned above. ing.

The line control procedure automatic switching method executed using the various means described above will be described below.

During operation of the communication control processing system, an operator inputs an instruction to execute line control procedure b from the console (DISP/KB) 7, for example.

Command reception that received the above execution request instruction
The APL task 62 executes the console (DISP/
After analyzing the command input from KB) 7, it requests the next procedure switching task 63 to execute line control procedure b.

Upon receiving the execution request for the line control procedure b, the procedure switching task 63 switches the main memory 6
Referring to the procedure correspondence table 61 in the system parameter definition table above, send a request to load all programs (procedure control tasks) A, C, and F necessary to execute the line control procedure b to the next load. The data is sent to the debugging task 64.

The loading task 64 loads a requested program (procedure control task) that is not on the main memory 6 into a specific area of the main memory 6 from the library of the external file (FPD) 4. . (Indicated by a dotted line frame) When the procedure switching task 63 receives the notification of completion of loading from the loading task 64, it passes the above-mentioned initial parameters etc. to the task and starts the procedure control task 65 for the line.

When all the procedure control tasks 65 necessary for line control procedure b operate, the procedure switching task 63
notifies the command reception APL task 62 of completion of preparation for execution of the line control procedure.

The command reception APL task 62 displays the completion of execution of the input command on the console (DISP/KB) 7 and notifies the operator.

When the operator recognizes the completion of execution of the command and inputs an execution command, the line control according to the above line control procedure b is executed.

The above embodiment is an automatic switching operation of the line control procedure based on instructions from the operator.
At initial program loading (IPL) when the communication control processing system is powered on, a default defined line control procedure can be activated.

In addition, instructions to execute the line procedure from the above operator are sent to the console (DISP/KB) 7 as in this example.
It is clear that the gist of the present invention is not impeded by direct instructions from, for example, via a conventional workstation.

As described above, in the present invention, during initial program loading (IPL), execution procedures of programs (procedure control tasks) corresponding to various line control procedures are stored in the main memory as a procedure correspondence table in the form of program numbers. After that, during system operation, depending on the line control procedure instructed by the operator, refer to the procedure correspondence table above and save the program group (procedure control task group) necessary for the line control to an external file ( The feature is that it is dynamically loaded from FPD to main memory and the line control procedure is automatically switched.

〔Effect of the invention〕

As described above in detail, the line control procedure automatic switching method of the present invention is effective for at least a processor, a main memory, and an external storage device (FPD).
and a communication control channel, the main memory stores a procedure correspondence table that stores the numbers of procedure control tasks necessary for the transmission control procedure of each line, and a command reception
An APL task, a procedure switching task, and a loading task are provided, and when there is an instruction directly from the operator or through the workstation, the program number (procedure control task number) required for the instructed line control is ) is selected from the above procedure correspondence table and loaded onto the main memory from the external storage device (FPD), the loaded program (procedure control task) is made executable, and the operator is notified. During system operation, there is no need to perform initial program loading (IPL) for each line control procedure.
The line control procedure can be dynamically switched and executed, and the procedure can be changed simply by changing the procedure correspondence table in the main memory.

[Brief explanation of drawings]

FIG. 1 is a diagram schematically showing an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional switching method for line control procedures. In the drawing, 1 is a line control procedure correspondence table, 2 is a program link, 3 is a system edit, 4 is an external storage device (FPD), 5 is an initial program loading (IPL), and 6 is a main memory (main memory). , 61 is a procedure correspondence table, 62 is a command reception APL task, 63 is a procedure switching task,
64 is a loading task, 65 is a procedure control task, 7 is a console (DISP/KB), ~ is each step of line control procedure switching, and A to F are each program necessary for the line control procedure.

Claims (1)

[Claims] 1. At least a processor, a main memory 6, an external storage device (FPD) 4,
In the communication control processing device equipped with a communication control channel, the main memory 6 includes a procedure correspondence table 61 storing the numbers of procedure control tasks 65 necessary for transmission control procedures of each line. , Command reception application (APL) task 6
2, a procedure switching task 63, and a loading task 64, and the command reception application (APL) task 62 executes the procedure switching task 63 based on instructions directly from the operator or through the workstation. Activated, the procedure switching task 63 refers to the procedure correspondence table 61 and requests the loading task 64 to load a program (procedure control task) 65 necessary for line control; 64 is the main memory (main memory) from the external storage device (FPD) 4
6, when the loading of the program (procedure control task) 65 is completed and the procedure switching task 63 is notified, the procedure switching task 63 puts the program (procedure control task) 65 into an operable state and executes the procedure switching task 63. The relevant program (procedure control task) 6 is sent to the command receiving application (APL) task 62.
5. An automatic line control procedure switching system characterized in that a notification is given when the line control procedure has become operational.