JPH01158527A - Memory management 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 display device that frequently switches and processes display contents,
Regarding a memory management method that saves data being processed at high speed when switching display contents, the purpose of this function is to improve processing efficiency by making it possible to save or restore data with - times of data transfer. In response to multiple programs that separately instruct data processing, a dedicated storage area for processing data is secured in memory, and based on instructions to change the operating mode, the data is stored in the dedicated storage area and the data being processed is stored in the dedicated storage area. When saving data, refer to the map register that specifies the address of the save destination for each dedicated storage area, save the data, and then transfer the data from the save destination to the original dedicated storage area again. In the transfer device, a specific item is set in the map register to specify the save destination address and the address of the dedicated storage area where all data stored in the dedicated storage area is saved at once, and when an operation mode change is instructed. , refers to specific items in the map register, and saves all the data stored in each dedicated storage area to the save destination in one data transfer, and also transfers the saved data from the save destination to each dedicated storage area. The configuration is such that writing is performed by transferring data once.

[Industrial application field]

The present invention relates to a display device that frequently switches and processes display content, and in particular, a memory management method that saves data being processed at high speed when switching display content. Display devices have come to be widely used to perform tasks. Such display devices can display the entire page of one page and modify the layout, or enlarge and display a part of the page to modify the headline or article content. To do this, the displayed data is frequently changed by saving the data being displayed and displaying the saved data again. However, in order to increase processing efficiency, it is necessary to move the data being displayed at high speed. It is necessary to be able to evacuate the area.

[Conventional technology]

FIG. 4 is a block diagram illustrating a conventional technique.

The processor 1 reads an initial setting program stored in the ROM 2 and starts operating, reads the program from the disk 9 via the disk control circuit 8, stores it in the memory 3, reads this program, and executes its instructions. Operate according to the following.

When data is input from the host device via the interface circuit IO, the processor l stores it in the memory 3. Then, according to the operator command input from keyboard 4,
The designated data is sent to the display unit 6 via the display control circuit 5 and displayed.

At this time, when a display mode is specified that instructs the display of a part of the page, for example, the processor 1 selects the map register 7 according to an instruction from the program A that instructs processing to communicate with a host device and receive data. The data is stored in a dedicated storage area 31 on the memory 3.

Also, for example, in response to instructions from program B that instructs processing to edit data input from the keyboard 4, the data is stored in the dedicated storage area 32 on the memory 3 specified by the manprestor database, the editing processing is performed, and the cursor is The program C recognizes the cursor position and determines whether the cursor position is a character or image data such as a photograph or comic and instructs it to be processed. Data is stored in the storage area 33 and processed.

Then, each processed data is transferred to a bitmap memory area of the memory 3, and this bitmap memory area is scanned by raster scanning to display the data on the display section 6.

FIG. 5 is a diagram illustrating the contents of a conventional map register.

Corresponding to program A, a private area address indicating the address of the private storage area 31, a save destination address indicating the address of a save area to save data stored in the private storage area 31, and corresponding to program B, A dedicated area address that indicates the address of the dedicated storage area 32, a save destination address that indicates the address of the save area where data stored in the dedicated storage area 32 is saved, and an address of the dedicated storage area 33 corresponding to program C. The dedicated area address shown in the private storage area 33 and the evacuation destination address indicating the address of the evacuation area where the data stored in the dedicated storage area 33 is to be saved are sequentially stored as a table.

In order to switch the content displayed on the display section 6 from the keyboard 4, when a change in display mode is input, the processor 1
In accordance with instructions from program A, the data in the dedicated storage area 31 is saved to the save area 34 specified by the evacuation address of the map register 7, and in accordance with instructions from program B, the data in the dedicated storage area 32 is saved to the save destination address in the map register 7. The data in the dedicated storage area 33 is saved to the save area 35 specified by the save destination address of the map register 7 according to instructions from the program C.

Then, new data specified by the changed display mode is stored in the dedicated storage areas 31, 32, and 33, respectively, according to instructions from programs A, B, and C, and predetermined processing is performed to store the new data in the memory 3. The data is transferred to the bi-notomasop memory area and displayed on the display section 6 in the same manner as described above.

Here, when a display mode is entered that instructs to display the evacuated data again, the processor 1 saves the data evacuated to the evacuated area 34 to the dedicated storage area 31 at the address specified by the map register. The data saved in the area 35 is transferred to the dedicated storage area 32, and the data saved in the save area 36 is transferred to the dedicated storage area 33.

[Problem that the invention seeks to solve]

As mentioned above, conventionally, the dedicated storage area of the memory 3 is divided and managed for each function, for example, programs A and B.

When C saves the data that C specifies to be processed from the dedicated storage area, each data is transferred independently to the evacuation destination, and when the evacuated data is processed again, it is transferred independently from the evacuation destination to the dedicated storage area. Therefore, the transfer process is repeatedly performed in accordance with the number of dedicated storage areas of the memory 3 that are managed in a divided manner, resulting in a problem that the processing efficiency of the display device decreases.

In view of these problems, the present invention provides a specific item in which a save destination address is set to collectively save data in a dedicated storage area that is divided and managed in the map register, and the processor 1 instructs a change in display mode. The purpose is to improve processing efficiency by making it possible to save or restore data by - times of data transfer by referring to this specific item when the data is transferred.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the present invention.

Similarly to the above, the processor 1 sequentially reads out a plurality of programs stored in the memory 3 that instruct data processing for each function, and stores the data that each program instructs to process in the dedicated storage area of the memory 3. and executes the processing instructed by each program.

When the processor 1 receives an instruction to change the operating mode, that is, the display mode, the processor 1 collectively aggregates the data stored in the dedicated storage area of the map register 11 in order to store the data in the dedicated storage area and save the data being processed. With reference to the specific item 12 specifying the address of the save destination to be saved, all the data stored in each of the dedicated storage areas is saved to the save destination by one data transfer. Also, when a display mode is entered that instructs to display the evacuated data again,
Based on the address of each dedicated storage area recorded in the specific item 12, the processor 1 writes saved data from the save destination to each dedicated storage area by one data transfer.

[Effect]

With the above configuration, the processor 1 transfers data stored in a plurality of dedicated storage areas of the memory 3 to the save destination in a batch at the save destination address specified by the specific item 12 of the map register 11. In addition, since it is possible to write the saved data from the save destination to the original dedicated storage area in one data transfer, the display speed is lower than the conventional case where data is transferred independently for each dedicated storage area. The processing efficiency of the device can be increased.

〔Example〕

FIG. 2 is a block diagram of a circuit showing one embodiment of the present invention.

The same reference numerals as in FIG. 4 indicate the same functions. For example, when a display mode that instructs to display a part of the page is specified, the processor 1 stores data in the dedicated storage area 31 on the memory 3 specified by the map register 11 according to instructions from the program A.

Also, according to instructions from program B, data is stored in the dedicated storage area 32 on the memory 3 specified by the map register 11 for editing processing, and according to instructions from program C, data is stored in the dedicated storage area 32 on the memory 3 specified by the map register 11. Storage area 3
Data is stored in 3 and processed.

Then, each processed data is transferred to the focus map memory area of the memory 3, and this bit map memory area is scanned by a raster scan to display the data on the display section 6.

FIG. 3 is a diagram illustrating the contents of the map register of the present invention.

Similarly to FIG. 5, corresponding to program A, a dedicated area address indicating the address of the dedicated storage area 31, a save destination address indicating the address of the save area to save data stored in the private storage area 31, and the program Corresponding to program C, a dedicated area address indicating the address of the dedicated storage area 32, a save destination address indicating the address of a save area to save data stored in the dedicated storage area 32, and a dedicated area address corresponding to program C. A dedicated area address that indicates the address of the storage area 33 and a save destination address that indicates the address of the save area where data stored in the dedicated storage area 33 is saved are sequentially stored as a table.

Then, in the last column of the map register 11, there is provided a specific item 12 to be referred to when a display mode change to save the data being displayed is instructed. an evacuation destination address for evacuation of the contents of the dedicated storage areas 31 to 33 of the Tsubaki Machine 3;
Addresses of dedicated storage areas 31 to 33 are stored.

In order to switch the content displayed on the display section 6 from the keyboard 4, when a change in display mode is input, the processor 1
refers to the specific item 12 of the map register 11, reads the data in the dedicated storage areas 31, 32, and 33 all at once, and uses the save destination address specified by the specific item 12 to save the data in the memory 3 specified by this save destination address. Write it to the storage area and save it.

Then, new data specified by the changed display mode is stored in the dedicated storage area 3 according to instructions from programs A, B, and C.
1, 32, and 33, perform predetermined processing, transfer to the bitmap memory area of the memory 3, and display on the display unit 6 in the same manner as described above.

Here, when a display mode is input that instructs to display the evacuated data again, the processor l uses the dedicated area address specified by the specific item 12 of the map register 11.
The evacuated data is transferred and written to the dedicated storage areas 31, 32 and 33, respectively.

〔Effect of the invention〕

As explained above, the present invention provides a dedicated storage area for storing data corresponding to a program that instructs processing of data for each function, and provides the dedicated storage area in a display device that frequently switches and processes display contents. Since it is possible to speed up the process of saving data, processing efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of a circuit showing an embodiment of the present invention, Fig. 3 is a diagram explaining the contents of the map register of the present invention, and Fig. 4 is a diagram of the conventional map register. FIG. 5 is a block diagram illustrating the technology and is a diagram illustrating the contents of a conventional map register. In the figure, 1 is a processor and 2 is a ROM. 3 is a memory, 4 is a keyboard, 5 is a display control circuit, 6 is a display section, 7.11 is a map register, 8 is a disk control circuit, 9
is a disk, 10 is an interface circuit,
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Claims (1)

[Claims] Corresponding to a plurality of programs that instruct data processing for each function, a dedicated storage area is secured in the memory (3) for processing the data, and based on an instruction to change the operating mode, , when saving data being stored in the dedicated storage area and being processed, refer to the map register (11) that specifies the save destination address for each dedicated storage area, and save the data. In a device that transfers the data from the backup destination to the original dedicated storage area after the backup, the map register (11) is a backup destination that saves all the data stored in the dedicated storage area at once. Specific item (12) specifying the address and the address of the dedicated storage area
and when instructed to change the operation mode, refer to the specific item (12) of the map register (11) and transfer all the data stored in each dedicated storage area in one data transfer. A memory management method characterized in that the data is saved to a save destination and the saved data is written from the save destination to each of the dedicated storage areas by one data transfer.