JPH02226335A - Information processor - Google Patents

Abstract

PURPOSE:To perform conversion at a high speed by performing the conversion processing between a numerical character code and binary numerical data by a converter. CONSTITUTION:A register 5 where the numerical character code and binary numerical data are stored, a character binary converter 6 which takes the numerical character code held in the register 5 as the input to output corresponding binary numerical data to a memory bus 4, and a binary character converter 7 which takes binary numerical data held in the register 5 as the input to output corresponding numerical character code to the memory bus 4 are provided. The conversion processing between the numerical character code and binary numerical data is performed by converters 6 and 7. Thus, the conversion processing is performed at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to speeding up mutual conversion processing between numerical character codes and binary-numeric data in an information processing device.

[Conventional technology]

FIG. 2 shows the configuration of a conventional information processing device. In the figure, (1) is an information processing device, (2) is a central information processing device,
(3) is the main memo IJ in which the execution program of the central information processing unit (2) is stored, (4) is the central information processing unit (2)
This is a memory bus that transfers data between the main memory (3) and the main memory (3).

Next, in conventional information processing devices, the character code system is parity-less ASCII (^merican N
5standardCharacteristic
r for Information Interch.
The following describes the conversion processing operation when converting an 8-bit numeric character code based on the 8-bit numeric character code into 4-bit binary numeric data. FIG. 3 shows the correspondence between the numerical character code of the ASCII code and the binary numerical data. When converting these numerical character codes into binary numerical data in the conventional apparatus, an execution program according to the algorithm shown in FIG. 4 is prepared inside the main memory (3). As a numerical character food argument, the central information processing unit (2) executes the execution program and obtains binary numerical data as an output argument. At this time, the central information processing unit (2) sequentially executes the instructions in the execution program using the internal arithmetic unit as a resource. Note that if the character code that is the two input arguments is not a numeric character code, the binary numeric data that is the output argument cannot be obtained, and non-input/output processing is executed as an invalid character code.

Next, a conversion processing operation when converting 4-bit binary numerical data into an 8-bit numerical character code based on an ASCII code without parity in a conventional information processing apparatus will be described. In conventional equipment, 4-bit binary numerical data is converted to AS without parity.
When converting CII code into numerical character code, an execution program according to the algorithm shown in FIG. 5 is prepared inside the main memory (3). The central information processing unit (2) executes the execution program using the binary numerical data to be converted as a number, obtains a numerical character code as an output argument, and the conversion operation is completed.

[Problem to be solved by the invention]

Conventional information processing devices performed the conversion process between numeric character code and binary numeric data as described in ``2'', so the processing speed of the frequently performed conversion process between numeric character code and binary numeric data has been limited. There was an issue with it being slow.

The present invention has been made to solve the problems mentioned in -1- above, and an object of the present invention is to obtain an information processing device that can perform conversion processing between a numerical character code and binary numerical data at high speed.

[Means to solve the problem]

The information processing apparatus according to the present invention includes a converter between a numerical character code and binary numerical data, and a register for supplying data or code input to the converter.

[Effect]

The information processing device according to the present invention performs conversion processing between a numerical character code and binary numerical data using a converter.

〔Example〕

FIG. 1 is a diagram showing an embodiment of an information processing apparatus according to the present invention. In the figure, (1) to (4) are exactly the same as the conventional device, (5) is a register that holds numerical character codes and binary numerical data, and (6) is a register (5).
) is input, and the binary numeric data for that numeric character code is input to the memory bus (4), and the central information processing unit (2) is notified that an invalid character code has been input. The character-to-binary converter (7), which is composed of a logic array that outputs signals for 4) is a binary character converter consisting of a logic array that outputs. In addition, Fig. 6 shows a block diagram of the logic array of the character-to-binary converter (6) when the character code system is a numerical character code based on the ASCII code, and Fig. 7 shows the logic array configuration of the character-to-binary converter (6). A configuration diagram of the logic array in (7) is shown. In the figure, (8) is a NAND array, and (9) is a NOR array. Next, in the information processing apparatus of the present invention, when the character code system is a numerical character code based on the ASCII code without parity.

The conversion operation when converting an 8-bit numerical character code to 4-bit binary numerical data will be described. First, the central information processing unit transfers a numerical character code to the register (5) via the memory bus (4). The transferred numerical character code is sent to the character-to-binary converter (6), and based on the 8-bit input character code, it is converted into NAN by IIAND array (8).
Take the D logic. Furthermore, based on the output of NAND logic, N
The OR array (9) performs NOR logic to generate 4-bit binary numerical data.

At this time, if the input character code is not a numeric character code, the illegal input detection signal becomes significant, and the central information processing unit (2)
is notified, and the central information processing unit executes unauthorized input processing.

When the input character code is a numerical character code, the central information processing unit reads the 4-bit binary numerical data generated by the character-to-binary converter (6) via the memory bus (4), The conversion operation is complete.

Next, in the information processing apparatus of the present invention, when the character code system is a numerical character code according to the ASCI I code without parity, conversion is performed when 4-bit binary numerical data is converted to a numerical character code. Let's talk about the operation.

First, the central information processing unit transfers binary numeric data to the register (5) via the memory bus (4).The transferred binary numeric data is sent to the binary character converter (7), and the 4-bit input Based on the binary data, NAND logic is performed in the NANI array (8).

Roughly based on the output of NAND logic, NOR array (9)
The NOR logic is applied to generate an 8-bit numerical character code. The central information processing unit reads the numeric character code generated by the binary character converter (7) via the memory bus (4) and the conversion operation is completed.

In the above embodiment, the character code system is AS.
I explained the case of CI I code, but EBC
Other character code systems such as the DIC code and the JIS8 code may also be used to achieve the same effects as in the embodiments described in -1- above.

In addition, in the above embodiment, the character/binary converter (
6) and binary character converter (7) to NANl)
-1101? It was constructed with a logic array of type R
It may be configured with OM (Read Only Memory).

〔Effect of the invention〕

As described above, according to the present invention, the mutual conversion process between numerical character food and binary numerical data is processed by the converter, so high-speed conversion is possible.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an information processing device according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of a conventional information processing device, and FIG. 3 is a diagram showing the correspondence between ASCI I numerical character code and binary numerical data. Figure 4 shows an algorithm for converting numeric character code to binary numeric data in a conventional information processing device, and Figure 5 shows an algorithm for converting binary numeric data to numeric character code in a conventional information processing device. FIG. 6 is a diagram showing the configuration of the logic array of the character-to-binary converter of the information processing device according to the embodiment of the present invention, and FIG. 7 is the embodiment of the present invention. In the figure, (1) is a diagram showing the configuration of a binary character converter of a binary character converter of an information processing device.
) is the central information processing bag Ff, (3) is the main memory, (4) is the memory bus, (5) is the register, and (6) is the character
A binary converter, (7) is a binary character converter, (8) is a NAND array, and (9) is a NOR array. In the figures, the same or corresponding parts are given the same reference numerals.

Claims (2)

[Claims] (1) In an information processing device that handles character codes as processing data, a register that stores a numeric character code and the numeric character code stored in the above register are input, and the binary corresponding to the numeric character code is generated. An information processing device comprising a converter that converts a numerical character code that outputs numerical data into binary numerical data. (2) In an information processing device that handles character codes as processing data, a register for storing binary numeric data and the binary numeric data stored in the register are input, and a numeric character code corresponding to the binary numeric data is generated. An information processing device comprising a converter that converts binary numerical data that outputs a numerical character code to a numerical character code.