JPH01231141A - Relative access memory device - Google Patents

Abstract

PURPOSE:To rearrange data and to hold single data in common without passing through software by reading out a relative access pointer in which an address being its contents is edited arbitrarily, when a relative access exists. CONSTITUTION:When an address conversion mode switching signal is a linear access, an input address 12 is inputted as it is to address decoders 151-15N through an address converting part 13. On the other hand, when a switching signal 11 is a relative access, the input address 12 passes through the converting part 13 without stopping once and inputted to the address concerned of the decoders 151-15N. Subsequently, in relative access pointers 201, 20N, a relative access pointer being in the address corresponding to the input address 12 is read out to the converting part 13, inputted to the decoders 151-15N again, and the data concerned is read out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a memory device, and particularly to a relative access memory device that can easily rearrange data and share single data.

[Conventional technology]

Generally, when looking at memory from a user's perspective, they are more interested in the information stored there than in the memory itself or where the information is stored. Therefore, the main memory device, 2
Next, use storage devices, etc., so that users can use them in the form of virtual memory or files rather than physical entities.
At present, the control is performed using a control program or the like.

In this case, in a virtual memory system, the main memory on which the program is executed should be large, so a large main memory is the primary goal, but in such a case, the system resources are limited. , used only when necessary during program execution.

Therefore, methods such as dynamically using the main memory have been adopted. As described above, various improvements have been made to storage devices in terms of increased capacity, flexibility, high speed, etc., but all of these are implemented using programs. In the past, data movement, rearrangement, and sharing of the same data related to the present invention were performed using programs.

[Problem to be solved by the invention]

As mentioned above, in conventional memory devices, starting with dynamic system usage such as in virtual storage devices, conversion of data from one format to another within the storage device, and transfer of single data onto memory Programs were also used to achieve these goals. However, once a program is used in this way, it takes time to create the program, and there are problems such as a decrease in the overall processing speed.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a relative access memory device that allows data to be rearranged and a single piece of data to be shared without using a program, and that allows data to be automatically accessed at high speed.

[Means to solve the problem]

The relative access memory device of the present invention (1) allows an input address to pass through as it is during linear access, and allows the content of the address at the address corresponding to this input address to be arbitrarily edited during relative access. an address conversion unit that reads and processes a relative access pointer; (ii) an input address outputted as is from this address conversion unit during the linear access; and an input address from the address conversion unit during the relative access; (iii) an address decoder that sends the relative access pointer whose content is arbitrarily edited to the address conversion section, which is located at the address corresponding to the address, and then inputs it again for processing; and a data output unit that reads and outputs data corresponding to an address.

Therefore, when using the relative access memory device according to the present invention, in the case of linear access, data at a linear address is directly accessed, and in the case of relative access, the address located at the address corresponding to this input address and whose contents are By reading the arbitrarily edited relative access pointer, relative data access becomes possible.

〔Example〕

The present invention will be described in detail below with reference to Examples.

FIG. 1 is a block diagram showing a relative access memory device according to the present invention, and FIG. 2 is a diagram illustrating data editing when this relative access memory device is used.

In FIG. 1, when the address conversion mode switching signal 11 for switching the access mode is linear access, the input address 12 is directly passed through the address conversion section 13 to the address decoders 15□ to 15. is input. These address coders 15. ~15, data existing at the corresponding address 16. ~16. Either one of them is outputted as read data 18 through the data reading section 17. These data 16. ~16. I and relative access pointers 201 to 2ON to be described next are obtained by writing write data 22 through the data switching section 19 in accordance with the data switching signal 21.

On the other hand, when the address conversion mode switching signal 11 is a relative access, the input address 12 directly passes through the address conversion section 13 and is output to the address decoder 15. ~
15. will be entered into the corresponding address. And relative access pointers 20, to 20. Among them, the relative access pointer located at the address corresponding to the input address 12 is read out by the address conversion unit 13, and is again read out by the address decoder 15. ~15. is input to the corresponding address coder. Here, data 16. which exists at the address corresponding to this relative access pointer. The corresponding data of ~16N are read out as successive data 18 through the successive output unit 17.

Next, data editing using this relative access memory device will be explained with reference to FIG.

Linear address 31 (31o to 3
1. ) is input. Now, these linear addresses 31 (3
1°~31. ) corresponding to the relative access pointer 22.
The embroidery-collected address patterns 33 (33° to 335) written in ~22S (in this case, five) are arranged as linear addresses 3i (3to to 31.) in the form of 31. as shown in the figure. ．． 31°, 312.31s, 31-
Suppose that it is given in a fixed manner. These relative access pointers 22. ~22s (edit address pattern is 316.3
1o1315.312.315.314) is read out to the address conversion unit 13 in FIG. is input, and starting here, as read data 35 (35, ~35s>) at the time of relative access, edit address patterns 31s, 31°, 31s, 31..31 of the relative access pointer 22.~22s are input.
Data 32s, 32°, 3 corresponding to s, 31=
2s, 322.32s, 324 are data reading section 1
It is output through 7. In this way, the editing results are automatically read out. Therefore, data processing such as rearranging data and sharing single data can be easily performed using hardware by editing relative access pointers.

[Effects of the Invention] ′ As described above, the relative access memory device of the present invention directly accesses data at a linear address during linear access, and accesses data at the address corresponding to this input address during relative access. By reading out a relative access pointer whose content is an address that has been arbitrarily edited, it is possible to access relative data. Therefore, data can be rearranged and single data can be shared without using software, and data can be edited automatically and at high speed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a relative access memory according to the present invention, and FIG. 2 is a diagram illustrating data editing when this embodiment is used. 13...Address converter, 15, ~15,...Address decoder, 17.
...Data reading section, 20, to 20, ...Relative access pointer. Applicant: NEC Corporation Representative

Claims (1)

[Claims] In the case of linear access, the input address is passed through as is, and in the case of relative access, the relative access pointer at the address corresponding to this input address is read out, the content of which has been arbitrarily edited. an address conversion unit to process; an input address outputted as is from this address conversion unit during the linear access; and the contents at an address corresponding to the input address from the address conversion unit during the relative access; an address decoder that once sends a relative access pointer whose address has been arbitrarily edited to the address converter and then inputs it again for processing; and a data readout that reads and outputs data corresponding to the input address from this address decoder. 1. A relative access memory device comprising: