JPS62107353A - Write protecting system for floppy disk - Google Patents

Abstract

PURPOSE:To prevent a data from being written erroneously, by displaying a message of 'write protection set', and 'write protection release', when setting alternately a source disk (SD), and a destination disk (DD) by using a single disk drive. CONSTITUTION:In a document generating device having an FD having a mechanism which can set a write protection, a floppy disk drive (FDD) 47 for driving the FD, 37 for displaying a data, and a RAM 20, it is detected that an SD is set to the FDD, whether the write protection is set or not is decided, and in case the protection is not set yet, a message of 'protection set' is displayed. Only in case the protection set is detected, the data is stored in the RAM 20 from the SD. When a DD is set to the FDD, in case the protection set exists, 'protection release' is displayed,and the data is written.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a write protection system for floppy disks.

[Technical background of the invention and its problems]

Some conventional document creation devices such as Japanese word processors have a single floppy disk device as an external storage device.

In such a device, when copying from a source disk to a destination disk, the source disk must be write-protected. However, conventionally,
The problem is that it doesn't check whether the source disk is write-protected or not, so it destroys the contents written on the disk.

[Purpose of the invention]

This invention eliminates the above-mentioned drawbacks and provides a floppy disk write protection method that can always provide optimal write protection even when a source disk and a destination disk are set alternately using a single disk drive. The purpose is to provide.

[Summary of the invention]

According to the floppy disk write protection method of the present invention, when a source disk is set in a floppy disk drive, if write protection is not enabled, a message "Please set write protection." 6. When a destination link disk with write protection set is inserted into the floppy disk drive, remove the write protection.

By displaying the message ', it is possible to avoid mistakes such as writing data to the source disk or reading data from the destination disk.

[Embodiments of the invention]

FIG. 1 shows a block configuration of a document creation device, such as a Japanese word processor, according to an embodiment of the present invention. 1
0 is a central processing unit (CPU) that controls the entire device. Reference numeral 12 is a ROM, and has a program area 14 in which programs for controlling the entire device, programs for creating and modifying external characters, etc. are stored. The ROM 12 further includes a character/gutern area 16 in which character patterns corresponding to character codes including kanji handled by the device are registered, and "
It has a dictionary area 18 in which a dictionary of names for converting the reading input in kana # or "Romaji" into kanji is registered.

Reference numeral 20 denotes a RAM, which has a document area for storing character code strings of input documents and a non-standard character pattern area for registering non-standard characters.

31 is a key date interface (KB-IF), 33
Fi key date (KB). 35 is a display controller (display CNT), and 37 is a display device. Display 37
is, for example, a liquid crystal display with a 32 (vertical) x 240 (horizontal) dot configuration.

41 is a printer interface (PRT-IF), 43
is a printer (PRT) that prints characters such as Chinese characters under the control of the CPU 10. The printer 43 is, for example, a thermal transfer printer having a 24-dot print head. 47 is, for example, a 3.5φ floppy disk drive, and 4
5 is the floppy disk drive interface (FD)
D-IP) Deruru.

FIG. 2 shows a control routine for disk copying in the floppy disk drive shown in FIG. In step 51, the CPU lO checks the status and confirms that the disk (in this case the source disk) has been set. Next, in step 55, it is checked whether the disk (source disk) is write protected. If write protection has not been set, in step 53, the message ``Please set write protection.'' is displayed on the display.
Display on 7. The oilator is 3.5φ according to this indication.
70 - Operate the write retention tab provided on the disk. As a result, there is no risk of data being written to the source disk by mistake. If write protection is set in step 55, data is read from the source disk and stored in RAM 20 in step 57. Next, in step 59, Mi recognizes that the destination disc has been set. In disgust,
In step 63, it is checked whether write protection is set on the destination disk.

If write protection is set, Stella f61
At this point, the message ``Remove the Nfi and go to factory.'' is displayed on the display 37.The operator operates the write-protection pawl provided on the destination disk in accordance with this message, and removes the write-protection. is reset to the FDD 47. As a result, the destination disk becomes writable.Next, the Stella f65 stores the contents of the source disk stored in the RAM 20 on the destination disk.

Next, in Stella 7667, it is determined whether the copy operation is completed. If the copy operation has not been completed, the process returns to step 51 and the above-described operation is repeated. On the other hand, when the copy operation is completed, the RAM is initialized in Stella f69, and the execution of the copy routine is completed.

〔Effect of the invention〕

As described above, according to the present invention, a floppy disk having a mechanism for setting write protection, a floppy disk drive for driving the floppy disk, a display device for displaying data, and a memory for storing data are provided. a document creation device having a first determination means for detecting that the source disk is set in the floppy disk drive and determining whether write protection is set; means for displaying a message to the effect that write protection is to be set on the display device if it is determined that write protection is not set; and only when the determination means detects that write protection is set; means for reading data from the source disk and storing it in the memory; means for displaying a message on the display device indicating that the destination disk is set in the floppy disk drive; and the destination disk is in the floppy disk drive. Set to detect vomiting,
a second determining means for determining whether write protection is set; and when the second determining means determines that write protection is set, a message for canceling the write protection setting is sent to the user. means for displaying on a display device; and means for writing the data stored in the memory onto the destination disk only when the second determining means detects that the write protection setting has been changed. With this configuration, it is possible to avoid errors such as writing data to the source disk and reading data from the destination disk.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a flowchart showing a control routine for disk copying in the floppy disk drive shown in FIG. 10...CPU, J,? ...ROM, 20...R
AM, 37... Display unit, 47... Floppy disk drive.

Claims (1)

[Claims] A floppy disk as a source disk or a destination disk having a mechanism for setting write protection, a floppy disk drive for driving the floppy disk, a display device for displaying data, and a display device for storing data. a document creation device having a memory, a first determining means for detecting that the source disk is set in the floppy disk drive and determining whether write protection is set; , means for displaying a message to the effect that write protection is to be set on the display device when it is determined that write protection is not set; and when the first determination means detects that write protection is set; only,
means for reading data from the source disk and storing it in the memory; means for displaying a message on the display device indicating that the destination disk is to be set in the floppy disk drive; and when the destination disk is the floppy disk drive. a second determining means for detecting that write protection is set and determining whether write protection is set; and a second determining means for determining whether write protection is set by the second determining means; means for displaying a cancellation message on the display device; and writing the data stored in the memory to the destination disk only when the second determination means detects that the write protection setting has been canceled. A write protection method for a floppy disk, characterized in that it is provided with a means for writing data into a floppy disk. 2. The floppy disk write protection system according to claim 1, wherein copying from the source floppy disk to the destination floppy disk is performed using one floppy disk drive.