JPH02280251A - System for loading initial program - Google Patents

Abstract

PURPOSE:To easily find an abnormality cause in a short time by issuing a sense instruction from a data processor to a designated input/output device continuously when a program read instruction to the designated input/output device is abnormally completed. CONSTITUTION:A sense instruction issuing means 4 provided to a data processor 1 issues the sense instruction for obtaining sense information to indicate an abnormal completion cause to designated input/output devices 2a-2n continuously when the program read instruction to the designated input/output device is abnormally completed at the time of loading an initial program from the input/ output devices 2a-2n to the data processor 1. Thus, when the initial program load from the input/output devices 2a-2n to the data processor 1 is abnormally completed, the detailed cause is offered to an operator, and the abnormality cause can be easily found in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an initial program loading method in a computer system.

[Conventional technology]

FIG. 4 is a block diagram showing the main part configuration of a computer system using the conventional initial program loading method. In FIG. 0, 1 is a data processing device that processes data;
2n is an input/output device that inputs and outputs data, and 3a to 3n are channel interfaces that connect the data processing device 1 and the input/output devices 23 to 2n, respectively.

In such a computer system, in order to run a basic program such as an operating system, a process called initial program loading is first required. The initial program load may be started manually, or the computer system may be automatically turned on at a predetermined time by an automatic synchronization device, but in both cases, the initial program load is The procedure is the same.

Next, an example of the procedure of the conventional initial program loading method will be explained with reference to the flowchart shown in FIG.

First, in step Sl, a system reset is performed to reset the data processing device l and input/output devices 2a to 2n.Next, in step S2, a prespecified input/output device (here, 2a) is reset. Issue a read command. At this time, if the input/output device 2a is not powered on or is in a stopped state and cannot perform a reading operation, the startup will be unsuccessful, and the initial program loading will be abnormally terminated in step S3. If the startup is successful, a read operation is performed in the input/output device 2a in step S4, and the data (program) read from the external storage device (not shown) is sent to the data processing device 1 via the channel interface 3a. If an abnormal condition such as a data error occurs during this read operation, the initial program load is abnormally terminated in step S5. When the reading operation is completed normally, in step S6, the program status word included in the read data is set in a predetermined location (not shown here) in the data processing device 1.
Successfully complete the initial program load. The program status word specifies the execution address and execution status of the program, and the data processing device 1 thereafter operates according to this program status word.

Also, if the initial program load terminates abnormally,
In step S7, this information is displayed on a system console or panel (not shown) or stored in the log storage means as log information.

[Problem to be solved by the invention]

By the way, in general, in the operating system of a computer system, when a command to the input/output devices 2a to 2n is abnormally terminated, the input/output devices 2a to 2n are
A sense command is issued to n to obtain sense information indicating the detailed cause of the abnormal termination. In response to this sense command, sense information is output from the input/output devices 23 to 2n and sent to the data processing device 1, and the cause of the abnormal termination is investigated.

However, initial program loading is a process that is performed before the operating system operates, and therefore, in the conventional initial program loading method, commands to the input/output devices 2a to 2n are issued at the time of initial program loading (initial program loading). There is a problem in that the amount of sense information indicating the cause of an abnormal termination is small, and it takes an operator a lot of time to determine the cause.

This invention was made to solve the above-mentioned problems, and when the initial program loading from the input/output device to the data processing device ends abnormally, the detailed cause is provided to the operator, and the cause of the abnormality is detected. The purpose of this invention is to obtain an initial program loading method that can be easily learned in a short time.

[Means to solve the problem]

In the initial program loading method according to the present invention, if the program read command for the specified input/output device terminates abnormally during initial program loading from the input/output devices 2a to 2n to the data processing device l, the data processing device l This is characterized in that the sense command issuing means 4 subsequently issues a sense command to the designated input/output device to obtain sense information indicating the cause of the abnormal termination.

[Effect]

If, for example, a program reading command to the input/output device 2a ends abnormally during initial program loading, the data processing device 1 continues to issue a sense command to the input/output device 2a from the sense command issuing means 4.

[Embodiments of the invention]

FIG. 2 is a block diagram showing the configuration of main parts of a computer system using an initial program loading method according to an embodiment of the present invention, and the same reference numerals are given to components corresponding to those shown in FIG. and the explanation thereof will be omitted. In FIG. 2, the sense command issuing means 4 provided in the data processing device 1 detects that a program read command for the specified input/output device has abnormally terminated during initial program loading from the input/output devices 2a to 2n to the data processing device 1. In this case, a sense command is subsequently issued to the specified input/output device to obtain sense information indicating the cause of the abnormal termination.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG.

In FIG. 1, steps 81 to S6 show the procedure when the initial program loading is normally completed, and are completely the same as the conventional example shown in FIG. If the activation of the reading command ends in failure in step S3, or if the reading operation ends abnormally in step S5, step S8
Then, a sense command is issued to the input/output device 2a. Then, in step S9, the sense information from the input/output device 2a is read by the data processing device 1 via the channel interface 3a. This read sense information is displayed on the system console or panel in step SIO and reported to the operator, or is stored in the log storage means as log information.

〔Effect of the invention〕

As described above, according to the present invention, when a program read command to a designated input/output device terminates abnormally, the data processing device continues to issue a sense command to the designated input/output device, so detailed sense information can be obtained. is obtained, and if the initial program load from the input/output device to the data processing device ends abnormally, the detailed cause can be provided to the operator, and the effect is that the cause of the abnormality can be easily known in a short time. .

[Brief explanation of drawings]

FIG. 1 is a flowchart for explaining the operation of the initial program loading method according to an embodiment of the present invention, and FIG.
The figure is a block diagram showing the main part configuration of the computer system in this embodiment, FIG. 3 is a flowchart for explaining the operation of the conventional initial program loading method, and FIG. 4 is the main part of the computer system in this conventional example. FIG. 2 is a block diagram showing the configuration. DESCRIPTION OF SYMBOLS 1... Data processing device, 2a-2n... Input/output device, 4... Sense command issuing means. Agent Masuo Oiwa (and 2 others) Figure 1 Figure 2 Male Figure 3 Figure 4

Claims (1)

[Claims] If the program read command to the specified input/output device terminates abnormally during initial program loading from the input/output device to the data processing device, the data processing device will continue to inform the specified input/output device of the cause of the abnormal termination using the sense command issuing means. An initial program loading method characterized by issuing a sense command to obtain sense information indicating.