JPS6280741A - History data display control method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] ``In a system equipped with a history memory that stores the state of latches in a data processing device in chronological order, when displaying the contents of this history memory.

By providing a means for providing a find function based on the time series pattern of a specified signal and a means for providing a function for arbitrarily specifying the order of the signals to be displayed, it is possible to quickly display changing portions of a desired signal in an easy-to-read form. I have to.

[Industrial application field]

The present invention relates to a history data display control method, particularly.

Contents of various latches stored in history memory.

The present invention relates to a history data display control method for editing and displaying in an easy-to-read format on a display of a console processor or the like.

[Conventional technology]

FIG. 4 is a diagram for explaining the prior art, FIG. 5 shows an example of data stored in the history memory, and FIG. 6 shows an example of a conventional display mode.

When a failure occurs in data processing equipment and you want to investigate the cause of the failure, or when conducting tests to check for design errors, etc., it is important to examine how signals flow through the data processing equipment. Become. For this reason, data processing devices are often equipped with a history memory that stores the states of latches forming one circuit as a time series. The memory contents stored in the history memory are the so-called Sv
Edited and displayed on the display screen of a console processor such as P.

In the history memory, for example, as shown in FIG. 4, history data indicating past states from the 0th cycle to the 255th cycle is stored for each latch corresponding to each signal. Some large history memories store - for example, 1024 cycles of data.

By the way, the amount of data that can be displayed at one time on the display of the console processor is limited, so when displaying history data, only a portion of the data can be displayed.For example, as shown in Figure 4, When following the time series of a certain signal, nine screens Gl, G2. G3
It was necessary to display the screen G4 at the desired position by sequentially displaying the following information, or by specifying the cycle number X and the signal bit number y using the display (D) command.

The contents of the history memory to be displayed.

For example, suppose that it is as shown in FIG. In this case, according to the conventional display method, data up to the 15th cycle is first displayed on the display screen as shown in FIG. 6(a), and the function (PFI) key instructing forward display is When pressed, data from the 9th 16th cycle is displayed as shown in FIG. 6(b).

[Problem that the invention seeks to solve]

When investigating the cause of a failure using historical data, it is often effective to find a change point in a signal and see how the change in that signal affects other signals. but.

According to the above-mentioned conventional method, when searching for a change point in a signal, the operator needs to sequentially switch the display while visually checking the above-mentioned forward instruction, etc.
There is a problem in that a desired display screen cannot be quickly obtained.

Also, the display order of the signals is fixed.

When looking at the relationship between a certain signal and another signal, if the signals are displayed far apart, there is a problem in that it is difficult to understand the mutual relationship.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a history data display control system that quickly detects a desired change point in a signal and displays it in an easy-to-read manner in relation to other signals.

[Means for solving problems]

FIG. 1 shows a basic configuration diagram of the present invention.

In FIG. 1, IO is a console processor 1 having a console control function for a host data processing device.
1 is a command processing unit that processes commands related to console control, and 12 is a find (FI) that instructs to search for a specified time series pattern for a specified signal.
ND) A find command reception unit that accepts commands, 13 a change command reception unit that accepts a CHANGE command that instructs to change the order of signals to be displayed on the display, and 14 a data editing unit that edits history data to be displayed.

15 is when the find command is entered.

A time-series pattern search unit searches for a time-series pattern of a specified signal; 16 is a display signal selection unit that selects signals to be displayed in a predetermined order or an order specified by a change command; 17 is a display signal selection unit that controls display on the display; Display control section to perform.

Reference numeral 18 denotes an error log data collection unit which is activated by a freeze signal to freeze the contents of the history memory and saves the contents of the history memory to an external storage device.

19 is a log data storage unit which is an external storage device in which the contents of the history memory are saved; 20 is a keyboard for console control; 21 is a display; 22 is a data processing device; an error detection unit that outputs a freeze signal to freeze the contents;
24 is an address counter, 2J is a latch that holds main signals in the data processing device 22, and 26 is a latch 25.
represents a history memory that stores the contents of each cycle.

When the data processing device 22 is operating, the address counter 24 is incremented every clock.

The contents of the latch 25 are sequentially stored at the address of the history memory 26 indicated by the address counter 24.The history memory 26 is 0, for example, 256 cycles to 102 cycles.
The contents of the latch 25 for four cycles can be stored.

When a hardware failure occurs in the data processing device 22 due to a machine check or the like, the error detection unit 23 detects it and outputs a so-called freeze signal. This freeze signal prohibits writing to the history memory 26 and freezes the contents of the history memory 26. The error log data collection unit 18 of the console processor 10
The log data storage unit 1 stores the contents of the frozen history memory 26 activated by an interrupt based on the freeze signal.
Store in 9.

The data editing section 14 reads and edits the data stored in the log data storage section 19 in response to instructions from the keyboard 20, and displays the data on the display 21 via the display control section 17.
displayed on the screen.

In the case of the present invention, find commands and change commands particularly related to editing of 9 display data are provided. When a find command is input from the keyboard 20, the find command reception unit 12 receives it and notifies the time series pattern search unit 15.0The time series pattern search unit 15 receives the command specified by the parameters of the find command. The specified time-series pattern is sequentially searched for the signal from the oldest cycle to the newest cycle, and the internal pointer is moved to the beginning of the cycle where the pattern matches.

4 When a change command is input from the keyboard 20, the change command reception unit 13 accepts it and notifies the 2 display signal selection unit 16. The 0 display signal selection unit 16 selects the order information of the signals to be displayed on the display 21. , and selects the signal to be updated according to the change command parameters and displayed according to the order information.

[Effect]

By inputting a find command, the time series pattern search unit 15 automatically finds a specific pattern of the specified signal and starts displaying it from that cycle, and by a change command, the order of the signals to be displayed can be changed. Since they can be exchanged, desired history data can be quickly displayed in an easy-to-read format. That is, the find command facilitates display selection in the one-time axis direction, and the change command enables display selection in the vertical axis direction corresponding to the signal type.

〔Example〕

FIGS. 2 and 3 are diagrams for explaining the display mode of history data according to an embodiment of the present invention.

For example, suppose that the contents of the history memory 26 are frozen as shown in FIG. 5 due to the occurrence of a hardware failure. 2, for example, 1 depending on the capacity of the history memory 26.
The states of various signals held in the latch 25 up to the 024th cycle are saved as history data.

When the console processor 10 is instructed to display history data, the signals held in the latches from the 0th cycle to the 15th cycle are first displayed, for example, as shown in FIG. 2(a). For example, when trying to investigate the states of various signals at the rise of the 5TART signal in order to find the cause of the failure, rF 5TAR
Input the find command "T, 01". here.

F is a command name, the first parameter 5TART is a signal name, and the second parameter "01" is a time series pattern.

When this find command is input, the time series pattern search section 15 stores the designated time series pattern. and 2 for example FORWARD
), the 5TART signal sequentially changes from "0'" to "1" from the current display top position, and the 2 display pointer is moved to the start of that pattern. Match. That is.

In this example, it will be tuned to the fourth cycle. Data editing is performed from the position of this display pointer, and the history data is displayed as shown in FIG. 2(b).

In the display state shown in FIG. 2(b), further rPFI
When the J key is input, the previously memorized 5TART
By the time series pattern of the signal.

The search continues and the first display screen is switched as shown in FIG. 3(a).

Here, let us assume that we want to investigate the relationship between, for example, the 5TART signal and the T7 signal. In the display as shown in FIG. 3(a), these signals are displayed separately, making it difficult to immediately grasp their timing relationships. In such a case, a change command such as 1, for example "C1,8" is input. C is the command name of the change command.

rl, 8J are bit numbers (or row numbers) of signals whose display positions are exchanged.

The display signal selection unit 16 stores in advance the correspondence between the rows of the screen on the display 21 and the bit numbers, and updates this correspondence information with the change command.
Instructs to re-edit display data. As a result, Figure 3 (
b) As shown.

The display positions of the TO signal with bit number 1 and the T7 signal with bit number 8 are exchanged, making it easier to see the relationship between the 5TART signal and the T7 signal.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to automatically find and display a desired signal change point in history data.

Also, by changing the order of the signals to be displayed.

Since it becomes possible to easily see the relationship between signals, diagnosis and debugging become easier.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of the present invention, FIGS. 2 and 3 are diagrams for explaining the display mode of history data according to an embodiment of the present invention, and FIG. 4 is a diagram for explaining the prior art. ,
Figure 5 is an example of data stored in the history memory, Figure 6 is an example of data stored in the history memory.
The figure shows an example of a conventional display mode. In the figure, 10 is a console processor, 11 is a command processing section, and 12 is a fineco cloak reception section. 13 is a change command reception section, 14 is a data editing section,
15 is a time series pattern search section, 16 is a display signal selection section, 17 is a display control section, 20 is a keyboard, 21 is a display, 22 is a data processing device, 25 is a latch, 26
represents history memory. Patent Applicant: Fujitsu Ltd. Representative Patent Attorney Mori 1) Hiroshi (1 other person)

Claims (1)

[Claims] In a history data display control method for displaying the contents of a history memory (26) that stores the state of a latch (25) in a data processing device (22) as a time series, the time series pattern of the signal to be displayed is means (12) for receiving commands for instructing; means (13) for receiving commands for instructing to change the display order of signals to be displayed; and means (13) for receiving commands for instructing to change the display order of signals to be displayed; , means (15) for searching time-series data regarding the signal in the contents of the history memory (26) in an instructed time-series pattern; and means (16) for selecting the signals to be displayed according to the display order.
and means for displaying the edited display content based on the search means (15) and the selection means (16).
17, 21).