JPS5998362A - Discriminating device of memory cassette - Google Patents

Abstract

PURPOSE:To prevent a malfunction by storing a code showing a classification of a data to be stored in a memory cassette, and executing the data processing by its code. CONSTITUTION:For instance, in case when a desired sentence data is read out by a sentence file registered already in a data area 413 of a memory cassette 4, an operator indicates a registered name by a keyboard 9, and also gives a read-out command by operating a control key. As a result, a CPU6 reads out a flag data from a flag area 411 of the memory cassette 4, whether the flag data is, for instance, 10 or not is discriminated, and unless the flag data is 10, processing of a file error is executed. If the flag data is 10, the registered name indicated from an index area 412 is retrieved. In this way, since no unnecessary processing is executed, a malfunction can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a memory cassette identification device, and more particularly, to a memory cassette identification device that is installed in a Japanese text processing device that uses a replaceable memory cassette as an external storage device. The present invention relates to a memory cassette identification device for identifying data stored in a memory.

BACKGROUND OF THE INVENTION Recently, Japanese text processing devices have become popular for streamlining office work. In such Japanese text processing devices, floppy disks and memory cassettes are used as external storage devices to store processed texts and the like.

A memory cassette has a semiconductor random access memory (RAM) backed up by a battery inside it, making it possible to protect its contents for a long time. It is expected that such a memory cassette will be used for various purposes such as text files, external character registration, and optional programs, depending on the intended use of the Japanese text processing device. However, when the number of memory cassettes increases, although the user only has to set the desired memory cassette in the Japanese text processing device, there is a possibility that the user may accidentally set another memory cassette. If you insert the wrong memory cassette,
There is a risk that the device will stop working at all, or that the contents stored in the memory cassette will be erased.

Purpose of the Invention Therefore, the main object of the present invention is to provide a system that, when a memory cassette is set, can identify the contents stored in the memory and process the stored data in accordance with the contents of the stored data. An object of the present invention is to provide a memory cassette identification device.

Summary To summarize the invention, a code representing the type of data is stored in the memory built into the memory cassette, and when the memory cassette is inserted, the code is read and data processing corresponding to the code is performed. It is configured to do the following.

The above objects and other objects and features of the present invention will become more apparent from the detailed description given below with reference to the drawings.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a mounting diagram of a memory cassette to which an embodiment of the present invention is applied. In FIG. 1, for example, an operating section of a Japanese text processing device 1 has an embedded section 2, into which a memory cassette 4 is inserted. Buried part 2
A connector jack 3 is provided on the side surface of the device, and this connector jack 3 is connected to a circuit (not shown) built into the Japanese text processing device. Memory cassette 4
The 0MO8-RA is backed up by a battery.
M (not shown) is built-in. The address line and data line of this RAM are connected to the plug 5.

By attaching this memory cassette 4 to the buried portion 2 and inserting the plug 5 into the connector jack 3, the memory cassette 4 is installed in the Japanese text processing device 1.

FIG. 2 is a schematic block diagram of an embodiment of the present invention.

First, the configuration will be explained with reference to FIG. An address bus AB and a data bus DB are connected to the CPLJ6 as data processing means. This address bus A
8 and the data bus DB are connected to the aforementioned connector jack 3, read-only memory (ROM), random access memory (RAM) 8, keyboard 9, and display section 10. The ROM 7 stores a control program for basic editing control for processing texts. R
AM8 is provided with a text buffer for storing text data or a buffer for various controls. The keyboard 9 is provided with character entry keys and editing control keys necessary for text processing. The display unit 10 displays message information and text data to the operator. When the memory cassette 4 is connected to the connector junk 3, the address bus AB and the data bus DB are connected to the built-in RAM 41.

FIG. 3 is a diagram showing the storage area of the RAM 41 built in the memory cassette 4'' shown in FIG. 2'.

The RAM 41 has a flag area 41 consisting of 1 byte.
1, an index area 412, and an area 413 for storing data or programs. The flag area 411 stores a code representing the type of data stored in the area 413.
When 13 is used as a text file, 1-byte data "10" is stored, and when used as a system file, that is, a program, for example, 1-byte data "20" is stored. When used for purposes other than these, predetermined 1-byte 7-lag data is stored. In the index area 412, the start address is stored as index data of the area 413. In addition, when using area 413 as a text file,
It has been initialized in advance so that it has no memory.

FIG. 4 is a flowchart for explaining the specific operation of one embodiment of the present invention. Next, the specific operation of one embodiment of the present invention will be explained with reference to FIGS. 1 to 4. When characters are input from the keyboard 9, the CPU 6
edits the text based on the input character data, and stores the text data in the text buffer of the RAM 8. Next, when the control keys included in the keyboard 9 are operated to give an instruction to register the created text, that is, to store it in a text file, the operations from step 1 (abbreviated as SP in the figure) are executed. That is, in step 1, the CPU 6 reads flag data from the area 411 of the memory cassette 4 inserted by the operator. In step 2, it is determined whether the flag data is "10". When it is determined that the flag data is "10", that is, when it is determined that a cassette in which some text has already been registered is inserted,
The CPLI 6 stores the registered name (which becomes the keyword when reading) specified by the operator in step 3 and the data area 4.
13 new start addresses and the index area 41
2. Subsequently, in step 4, the start address data stored in the index area 412 of the memory cassette 4 is read. In step 5, the CPLI 6 sequentially specifies the addresses of the data area 413 of the memory cassette using the above read head address data and transfers the text data stored in the text buffer of the RAM 8. When all the data in the text buffer has been transferred to the memory cassette 4, in step 6, address data required for the next storage process in the data area 413 is stored in the index area 412.

In step 2 described above, if the flag data is not "10", the process proceeds to step 7, where the flag data is "0".
0'', that is, whether it is a new text file. If it is determined that the flag data is "00", the 7-lag data "10" is stored in the flag area 411 of the memory cassette 4 in step 8, and the start address data ( In the initial state, it is a fixed address). Then, the operations of steps 3 to 6 described above are executed. If it is determined in step 7 that the flag data in the flag area 411 is not "10" or "00",
It is determined that the memory cassette 1-4 installed in the buried section 2 of FIG. 1 is not the memory cassette to be processed now, and file error processing is performed in step 10. That is, a file error message is displayed on the display unit 10.

Next, a description will be given of the operation when desired text data is read from text files already registered in the data area 413 of the memory cassette 4.

In this operation, the processing from step 11 onwards is performed. That is, the operator specifies the registered name as a keyword using the keyboard 9, and also issues a read command by operating the control keys. Then, the CPU 6 reads flag data from the flag area 411 of the memory cassette 4 in step 11 in the same manner as described above. Then, in step 12, it is determined whether the flag data is "10". If the flag data is not "10", file error processing is performed in step 10. If the flag data is r1-OJ, the index area 412 is searched for the specified registered name.

Then, in step 14, the corresponding data area 4
The first address of 13 is read out, and based on the first address, data is transferred to the text buffer of RAM 8 in step 15.

Then the optional program is memorized! The operation when the memory cassette 4 is inserted and a process other than the basic control program stored in the ROM 7 is requested will be described. When the operator attaches the memory cassette in which the system files are stored and operates the control keys on the keyboard 9 to instruct additional programs, the CPU 6 performs the processing from step 16 onwards. That is, the CPU 6 reads the 7-lag data from the memory cassette in step 16 in the same manner as described above, and determines in step 17 whether the flag data is "20" or not. When the other 7-lag data is read out, file error processing is performed in step 10. If the flag data is "20", the start address of the program area 413 is read out based on the contents of the index area 412 stored in advance in step 18, and
M collection control is performed according to the additional program read in step 19.

In the above description, the memory cassette 4 is used as a data file or a program file, but the present invention is not limited to this, and the memory cassette 4 may be used as a memory for registering external character patterns, for example. At this time, the flag data is roOJ, rloJ,
It is necessary to specify data other than r20J.

Furthermore, in the above explanation, the present invention is applied to a Japanese text processing device, but the present invention is not limited to this, but can be applied to any system that requires an external memory. be able to.

Effects of the Invention As described above, according to the present invention, a code representing the type of data to be stored in the memory cassette is stored, and data processing is performed according to the code. Because I never practice the principle of
Malfunctions can be prevented, and the precautions the user has to take when installing the memory cassette can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an implementation diagram of a memory cassette to which an embodiment of the present invention is applied. FIG. 2 is a schematic block diagram of an embodiment of the present invention. FIG. 3 is a diagram showing data stored in the memory cassette. FIG. 4 is a flowchart for explaining the specific operation of one embodiment of the present invention. In the figure, 2 is a buried part, 3 is a connector jack, 4 is a memory cassette, 41 is a RAM, 411 is a flag area, 412 is an index area, 413 is a data or program area, 6 is a CPU 17, ROM 18 is a RAM
M, 9 indicates a keyboard, and 10 indicates a display section. Man 2 drawings Atsushi 4 drawings

Claims (1)

[Scope of Claims] An identification device for identifying data stored in the memory, including a memory cassette having a built-in memory and configured to be replaceable, wherein the data to be stored in the memory is a code storage area for storing a code representing the type of the memory cassette, a code successive means for reading the code stored in the code storage area of the memory cassette, and a code read by the code reading means. and data processing means for processing data stored in the memory based on a code.