JPS63163583A - Graphic display system - Google Patents

Abstract

PURPOSE:To improve a processing speed by directly referring to graphic data in a main storing means by a graphic display control means through a graphic address converting means. CONSTITUTION:The graphic address converter is interposed between the graphic display control means 12 and the main storing means and a process address means 15 so as to directly refer to the graphic data in the main storing means 16 from the graphic display control means 12. Namely, the graphic address converting means 10 converts the graphic data address at the time of the reference request of the graphic data from the graphic display control means 12 into the physical address of the main storing means 16 and the graphic data in the main storing means 16 can be directly referred from the graphic display control means 12. An address converting method in the graphic address converting means 10 is similar to the address converting method for converting from a process address in a process address converting means 15 to the physical address of the main storing means 16 and the address converting method according to a page frame storing area managing method is used.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a graphic display system used for computer graph inks and the like.

(Summary of the Invention) The present invention provides a graphic display system in which a graphic display control unit converts graphic data created by a central processing unit and stored in a main storage unit via a process address conversion unit into a graphic display system. Accordingly, the graphic address is converted into a physical address of the graphic data contained in the main storage means, and the graphic data is directly referenced and displayed on the graphic display device.

[Conventional technology]

Conventionally, graphic data has been recorded in graphic display systems.
The SJf area is controlled by the graphic display control means 22 as shown in FIG.
It had a data storage section inside and was held within it. The graphic data held in the graphic data storage area 21 in the graphic display control means 22 is created by a process executed on the central processing unit 14. These graphic data are read out by the graphic display control means 22,
It is displayed on the graphic display device ff13.

[Problem that the invention seeks to solve]

However, conventional graphic display systems have the following problems.

il+ The process executed on the central processing unit 14 converts the data that is the source of the graphical image to be displayed,
The data stored in the main storage means 16 and which is the source of this graphic image is referred to via the process address conversion means 15, and the graphic display control means 22 performs a process of converting it into data that can be accepted. The graphic data is held in the graphic data storage tq area 21 included in the graphic display control means 22 via the process address conversion means 15. Thereafter, the graphic display control means 22 refers to the graphic data in the graphic data storage area 21 and displays the graphic on the graphic display device 13. For this reason, the number of times the graphics data is referenced and the distance traveled becomes long, and conversion processing by the central processing unit 14 is required, which reduces the processing speed of the graphics display system.

(2) Graphic data storage area 2 in the graphic control means 22
1 is used only for holding graphic data and cannot be used as a storage area for other purposes. Further, in order to hold the graphic data, a sufficient graphic data storage area 21 is required, resulting in high cost.

(3t niJ) The graphic data storage area 21 in the graphic display control means 22 has a limited storage capacity, and it was impossible to hold graphic data exceeding that capacity.

(4) The storage area of the process executed on the central processing unit 14 is
5, the logical address of the process is converted into a physical address on the main storage means 16, and
6 reserved above. For this reason, the graphic display control means 22
However, even if an attempt was made to directly refer to the data on the process, the physical address on the main storage means 16 was not determined, making reference impossible.

Therefore, in order to solve these conventional problems, the present invention provides a graphic data storage F in the graphic display control means 22.
+Instead of holding graphic data only in JT area 21,
It is an object of the present invention to provide a graphic display system in which graphic data is held in a main memory means 16 and a graphic display control means 22 can directly refer to the main memory means 16.

[Means for solving problems]

In order to solve the above problems, the present invention has been developed on the graphic display side. '
A graphic address conversion device is interposed between the t[1 means 12 and the main memory means 16 and between the process address means 15, so that the graphic data in the main memory means 16 can be directly referred to from the graphic display control means 12. did.

[Effect]

In the graphic display system configured as described above, the graphic address conversion means 10 is connected to the graphic display control means 12.
Converts a graphic data address upon a graphic data reference request from the main storage means 16 into a physical address of the main storage means 16, and enables the graphic display control means 12 to directly refer to the graphic data in the main storage means 16. do.

The graphic address in the graphic address conversion means 1O is converted into the physical address of the main storage means 16. The address conversion method is set by the process address conversion means 15.
By using an address conversion method based on a page frame storage area management method similar to the address conversion method of converting the process address to the physical address of the main storage means I6, the graphic display control means 12 can:
In the same way that the process executed on the central processing unit 14 can refer to the storage area for recording the graphic data, etc., using logically continuous process addresses,
The graphic data can be referenced on logically consecutive graphic addresses without the need to transfer the graphic data stored in the graphic data storage area included in the main storage means to another storage area. .

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

As shown in FIG. 1, one embodiment of the graphical display system according to the present invention includes a central processing unit 14, a process address conversion means 15 connected to this, a main storage means I6 connected to this, and Consisting of a graphic address converting means 10 connected to the process address converting means 15 and the main storage means 16, a graphic display control means 12 connected to this, and a graphic display means 13 connected to this. has been done. In the central processing unit 14, a process is executed, and the logical address space seen from the process is a continuous process address, and the data in the main storage means 16 is stored for graphic data creation processing, etc. refer. The continuous process address is converted by the process address conversion means 15 into a physical address including discontinuity as a data storage area in the main storage means 16 referred to by the process. Further, the process executed on the central processing unit 14 is executed by the process address conversion means 15 and the graphic address conversion means lO.
, the graphic display control means 12 is referred to for indicating the execution 1 of graphic data processing. The graphic display control means 12 stores continuous graphic addresses in the main storage means 16.
The graphic data storage area 11 within is referred to for graphic data display processing and the like. The continuous graphic address is converted by the graphic address conversion means 10 into a physical address of the main storage means 16 including discontinuity.

Further, the graphic display control means 12 displays a graphic on the graphic display device based on the graphic data referenced from the main storage means 16.

Referring to the explanatory diagram of the address conversion method of the process address conversion means shown in FIG. 3, the process address of the process executed on the central processing unit is divided into a process page number and an address within the process page. The process address conversion means holds a process page frame management table. Each row of the process page frame management table holds management data and a physical page number of the main storage means. A method for converting a process address into a physical address in the main storage means is such that the process page number in the process address indicates a stage of the process page frame management table, and the physical page number held by that stage is converted into a physical address in the main storage means. This is the physical page number of the physical address of work 6. The address within the process page of the process address becomes the address within the physical page of the physical address of the main storage means 16 as it is.

Referring to the correspondence diagram of the physical address and storage area of the main storage means in FIG. 4, the physical address of the main storage means 16 is divided into the above-mentioned physical page number and physical page address. The storage area in the main storage means 16 is divided into physical pages, the physical page number of the physical address indicates the physical page of the storage area, and the address within the physical page indicates the relative position within the physical page. point.

Based on the above explanation, referring to the figure data area allocation explanatory diagram of FIG.
exist as consecutive addresses within the process address space. However, in reality, the process address conversion means 15 creates discontinuous storage areas in the main storage means 16, that is, corresponding to discontinuous physical pages.

On the other hand, referring to the explanatory diagram of the address conversion method of the graphic address conversion means in FIG. be divided. The graphic address conversion means 10 holds a graphic page frame management table.

Each row of the graphic page frame management table holds management data and a physical page number of the main storage means 16. In order to convert a graphic address into a physical address in the main storage means 16, the graphic page number in the graphic address specifies a row in the graphic page frame management table, and the physical page number held in that row is converted into a physical address in the main memory 16. Let it be the physical page number of the physical address of means 16. The graphic page address of the graphic address becomes the physical page address of the physical address of the main storage means 16 as it is.

Based on the above explanation and referring to the graphic data area allocation explanatory diagram of FIG. 7, the graphic data area 11 referenced by the graphic display control means 12 exists as continuous addresses in the graphic address space.

However, in reality, the graphic address conversion means 10 creates storage areas in the main storage means 16 that include discontinuities, that is, corresponding to discontinuous physical pages.

Based on the explanation so far, the graphic address conversion means 1
The graphic page frame management table held by 0 is created as follows. First, the graphic data to be displayed in the graphic display bag '8113 is stored in the central processing gF714.
The process executed above creates continuous graphic data in the process address space.

However, this continuous graphic data %I area actually corresponds to a physical page within the ta means 16 that includes discontinuity. Next, before the process executed on the central processing unit 14 instructs the graphic display control means 12 to process graphic data, the process corresponding to the continuous graphic data area of the process address space Let the physical page number held by the row of the page frame management table be the physical page number of the row of the graphic page frame management table corresponding to the continuous graphic data area of the graphic address space. This process is performed for the entire continuous graphic data area. After this process, the graphic display control means 12
, to process the graphic data of the continuous graphic data area, and display the graphic on the graphic display device 13.

By repeating the method described above, and by performing a similar method in a process different from the process described above executed on the central processing unit 14,
The graphical display system of the present invention can be applied even when a plurality of processes are being executed.

Further, in this embodiment, the address conversion method in the process address conversion means 15 and the graphic address conversion means 12 is based on the page frame management table, but other methods such as a segment method using a heath address and segment capacity may also be used. good.

〔Effect of the invention〕

As described above, in the present invention, via the graphic address conversion means 10,
Since the graphic display control means 11 and 12 can directly refer to the graphic data in the main storage means 16, the following effects can be obtained.

The graphic display control means 12 can perform graphic display processing by directly referring to the main storage means 16 that holds the data that is the source of the graphic image to be displayed by the process executed on the central processing unit 14. Therefore, the processing speed of the entire graphic display system is greatly improved.

(2) Graphic data storage area 2 in the graphic display control means 22
1 becomes unnecessary, and an inexpensive graphic display system can be realized.

(3) The storage capacity of graphic data depends only on the capacity of the main storage means 16 and is not affected by the capacity of the graphic display control means 12.

(4) Since the address conversion method in the graphic address conversion means 10 and the address conversion method in the process address conversion means 15 are similar, the process address can be used as it is as the graphic address.

Also, because of this, the graphic data storage area 11 in the main storage means 16 does not necessarily have to be a continuous marking area. When the process address conversion means employs a page frame main memory management method using page frames, the graphic data storage area 11 included in the main memory means 16 can also be distributed in page frame units.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the graphic display system of the present invention, and FIG.
The figure is a block diagram of a conventional graphic display system, and FIG. 3 is an explanatory diagram of the address conversion method of the process address conversion means.
FIG. 4 is a correspondence diagram between physical addresses and storage areas of the main storage means, FIG. 5 is an explanatory diagram of allocation of graphic data areas in the process address space, FIG. FIG. 7 is an explanatory diagram of allocation of graphic data areas in the graphic address space. 10...Graphic address conversion means 11...Graphic data recording tα area 12...Concave display control means 13...Graphic display device 14...Central processing unit 15...Process address conversion means 16.・Seiko Electronics Co., Ltd. Brozes address above the main memory means ・Address # buried in the means of consideration
Figure 4: Explanatory diagram of how to view the address room of the figure address figure address register stage 6
figure

Claims (1)

[Scope of Claims] A central processing unit that executes a process; a process address conversion unit connected to the central processing unit; a main storage unit connected to the process address conversion unit and including a graphic data storage area; A graphic address conversion means connected to the process address means and the main storage means, a graphic display control means connected to the graphic address conversion means, and a graphic display device connected to the graphic display control means. , the graphic control means refers to graphic data created by the process and held in the graphic data storage area via the process address converting means, and converts the obtained graphic data. A graphic display system characterized by displaying on the graphic display device.