JPH0216647A - Information processor - Google Patents

Abstract

PURPOSE:To perform dump sampling from a memory, etc., when a program is abnormal by reading a request flag indicating a reset or dump request provided on an operation panel side by means of a CPU at the time of a reset request and executing a dump program without resetting the memory at the time of turning on. CONSTITUTION:Monitoring interruption of a CPU 2 is performed on the side of the operation panel 4 of an information processor and whether or not CPU monitoring is made is checked on the CPU 2 side. When a monitoring interrup tion is made, the CPU outputs a monitoring answer and whether or not the monitoring answer of the CPU 2 is outputted is checked on the panel 4 side. When the answer is not outputted, whether or not a time-out occurs in the time monitoring is checked on the panel 4 side. When a time-out occurs, a reset/dump flag is turned on and whether the reset is automatic reset or manual reset by an operator is checked. When the reset is manually made by an opera tor, the CPU 2 side checks the turning on of the reset/dump flag automatically or in accordance with the instruction of the operator.

Description

[Detailed Description of the Invention] [Summary] This invention relates to an information processing device that uses a microprogram control method, with the aim of making it possible to collect a dump of main memory, etc. even in the event of a microprogram error. In an information processing device equipped with an operation panel that issues a reset instruction and a dump collection instruction to a CPU, a reset/dump request flag for storing a reset instruction and a dump collection instruction is provided in the operation panel, and these instructions are issued. In this case, the system is reset, the ROM reset process is started, and the reset/dump request flag is checked during the reset process, and if these instructions are given, the reset process is started. By avoiding normal processing such as memory initialization, loading a dump program stored in an external storage device, and allowing the dump program to dump system information to the dump storage area of the external storage device. , configure to ensure dump collection of memory contents, etc.

[Industrial Field of Application] The present invention relates to an information processing device using a microprogram control method.

[Prior Art] FIG. 4 is a diagram showing the system configuration and data flow of a conventional information processing device, and FIG. 5 is a flowchart showing the process flow from system startup to dance recording.

First, the system configuration shown in FIG. 4 will be explained. The system storage (88) 1 is the main memory of the system, and is the memory in which O8 or application programs are normally loaded and operated. The CPU 2 is located at the center of the system and controls the entire system, including the flow of data and processing within the system. The CPU 2 includes local memories such as a ROM 2a and a control storage (O8) 2b in addition to the SS1. The ROM 2a is the first part to operate when the system is started up, and normally performs initial diagnosis of the CPLI 2 main unit, initial settings of the main memory (88) 1, and loads the loader 3a for loading microprograms from the external storage device 3, and performs control. Processing such as passing is performed. As the external storage device 3, for example, a DASD is used.

The control storage 2b is a local memory into which the microprogram 3b is loaded from the external storage device 3 by the loader 3a, and thereafter the microprogram 3b operates on the cs2b to control the CPtJ2. The operation panel 4 is used by an operator to request certain processing from the system, and has functions such as a dump request or a system reset request.

Further, a RAM (not shown) is built inside, and is used for an interface with the CPU 2.

The external storage device 3 stores programs such as a loader 3a, microprogram 3b, and O8 (operating system > 3c) as an external storage device for the system, and is used as a dump output medium. The floppy disk 5 is used as a temporary external storage device.

In these systems, 1. The steps from system startup to dump collection will be explained using FIG.

First, the system enters a reset state immediately after the system is powered on or by a reset instruction from the operation panel 4. Next, control is transferred to ROM2a, and initial diagnosis of CPU2 and SSL initialization are performed (step 1).
, R, the microprogram 3b is loaded from the external storage device 3 into the loader 3aeSS1 (
In step 2° process (■), control is transferred to the loader 3a. The loader 3a loads the microprogram 3b from the external storage device 3 into the C82b (step 3° process 2), and transfers control to the microprogram 3b. Thereafter, the microprogram 3b reads 083c from the external storage device 3 in S81 (step 4° process ■), and enters normal operation (step 5).

In this state, if a dump request occurs due to some reason (program, hardware error, request from the operation panel 4, etc.) (step 6), the contents of SS1 and C82b are transferred to the external storage device 3 under the control of the microprogram 3b. Dump collection is completed by outputting the dump to storage [3d (Step 7゜Process ■).

[Problems to be Solved by the Invention] However, in order to enable the dump control as described above, it is a prerequisite that the microprogram 3b in the C82b is operating normally. If there is a microprogram abnormality (for example, microloop or microstop), there is a problem that a dump cannot be collected. In addition, in order to avoid the system from microprogram abnormalities, it is possible to input a reset instruction from the operation panel 4, but when reset, control is transferred to the ROM 2a again and the memory etc. are initialized, so information cannot be lost. A problem arises in that it cannot be collected.

The present invention has been made in view of these problems, and an object of the present invention is to provide an information processing device that can collect a dump even if an abnormality occurs in a microprogram.

[Means for Solving the Problems] FIG. 1 is a diagram showing the principle configuration of the present invention. Components that are the same as those in FIG. 4 are designated by the same reference numerals. In the figure, 4a is a reset/dump request flag that stores the fact that a reset and dump request has been made, and 3e is a dump program that performs dance processing of the memory etc. in place of the microprogram 3b. The reset 1 to dump request flags 4a are provided in the operation panel 4, and the dump program 3e is provided in the external storage device 3. The reset dump request flag 4a can be read by the ROM 2a. The dump program 3e is then read into the system storage 1.

[Operation] When a dump request or a reset request is issued from the operation panel 4, the reset/dump request flag 4a is turned on. Then, send the same request as a normal reset to the CP
Submit on tJ2. This puts the CPU 2 into a reset state, but in controlling the ROM 2a, before performing memory initialization, the dump request flag in the operation panel 4 is checked, so that if the flag is on, memory initialization is not performed, and The loader in the external storage device 3 is not loaded, but is read into the dump program 3eeSS1. This dump program 3e allows SS1 and 082b to be stored in the dump storage area 3d in the external storage device 3.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a flowchart showing the operation of the present invention. First, the system enters a reset state immediately after the system is powered on or by a reset instruction from the operation panel 4. Next, check if there is a dump request (
Step 1). Reset/reset whether there is a dump request.
Determine whether the dump request flag is on. If the reset/dump request flag is off, processing similar to the flow shown in FIG. 5 is performed. That is, then R.O.
Control is transferred to M2a, initializing the CPU 2 and SS1 (step 2), and loading the loader 3a for loading the microprogram 3b from the external storage device 3 into SS1 (step 3゜processing). , transfers control to the loader 3a.

The loader 3a loads the microprogram 3b from the external storage device 3 into the microprogram 082b (step 4° process 2), and transfers control to the microprogram 3b.

Thereafter, the microprogram 3b reads 0830 from the external storage device 3 in S81 (step 5° process ■), and enters normal operation (step 6). If an abnormality occurs in the microprogram 3b during normal operation, the process returns to the reset state in step 7).

If the dump request flag is on in step 1, the CPU 2 reads the dump program 3e into the SS1 without resetting each memory (step 8゜processing).
), the contents of C82b, and the contents of S81 are stored in the external storage device 3 or floppy disk 5. In this way, dump collection can be performed even when the microprogram is abnormal.

Figure 3 is a flowchart showing the operation of the entire system.
It shows the operations on the CPU side and the operation panel (monitoring device) side. First, on the operation panel side, c
A monitoring interrupt is made to pu (step 1). On the other hand, cp
The u side checks whether there is CPtJ monitoring (step 11), and if there is a CPLJ monitoring interrupt, outputs a CPLI monitoring response (step 12).
. The operation panel side checks whether there is a CPU monitoring response (step 2), and if there is no response, checks whether a time monitoring timeout has occurred (step 3).

If a timeout occurs, the reset dump flag is turned on (step 4). After that, check whether it is an automatic reset or a reset by an operator (Step 5), and if it is a reset by an operator, check whether there is an instruction from the operator (Step 6).
. When there is a CPU reset instruction automatically or by an operator's instruction (step 7), the CPtJ side checks whether the reset/dump flag is on (step 21), and if it is on, performs the dump processing as described above (step 21). Step 22), otherwise normal reset processing is performed (Step 23).

[Effects of the Invention] As described in detail above, according to the present invention, a reset/dump request flag is provided on the operation panel side to indicate that a reset or dump request has been made, and when a reset request is made, the CPU: An information processing device that first reads this flag and executes a dump program without resetting the memory if it is on, thereby making it possible to collect a dump of the main memory, etc. even in the event of a microprogram error. can be provided.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle configuration of the present invention, Fig. 2 is a flowchart showing the operation of the present invention, Fig. 3 is a flowchart showing the operation of the entire system, and Fig. 4 shows the system configuration and data flow of the conventional device. Figure 5 is a flowchart showing the flow of processing from system startup to dump collection. In FIG. 1 is system storage, 2 is CPU. 2a is ROM. 2b is C81, 3 is external storage device, 3a is loader, 3b is microprogram, 3C is O8, 3d is dump area, 3e is dump program, 4 is operation panel, 4a is reset/dump request flag, 5 is floppy disk. be.

Claims (1)

[Scope of Claims] An information processing device that uses a microprogram control method and includes an operation panel (4) that issues a reset instruction and a dump collection instruction to a CPU (2), comprising: a reset function in the operation panel (4); A reset/dump request flag (4a) is provided to store instructions and dump collection instructions, and when these instructions are given, the system is put into a reset state, and reset processing by the ROM (2a) is started, and the reset processing is performed. , the reset/dump request flag (4a) is checked, and if these instructions have been given, normal processing such as memory initialization is avoided during the reset processing, and the data is stored in the external storage device (3). By loading the stored dump program (3e) and allowing the dump program (3e) to dump system information to the dump storage area (3d) of the external storage device (3), memory contents, etc. An information processing device configured to reliably collect dumps of data.