JPS62107329A - Document generating device - Google Patents

Abstract

PURPOSE:To prevent a program from running away, and a document in a memory from being cleared, by setting a power source cut-off flag when starting a copy of a floppy disk, and resetting its flag at the time point when the copy has been completed. CONSTITUTION:A CPU 10 checks a status, confirms a fact that a disk has been set, and checks whether a write protection has been set or not. When it is confirmed that the write protection has been set, a power source cut-off flag is set, and a data is read from a source disk, and stored in a RAM 20. Subsequently, the contents of the source disk which has been stored in said RAM 20 are written in a destination disk. In this state, at the time point when a copy operation has been ended, the power source cut-off flag is reset, the RAM is initialized, and a copy routine is ended.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a document creation device having a floppy disk.

[Technical background of the invention and its problems]

2. Description of the Related Art Conventionally, some document creation devices such as Japanese word processors have a Freonbie disk device as an external storage device.

In such an apparatus, when performing a disk copy, for example, the copy is performed by repeatedly reading/writing the RAM area as a work area. If vL# crashes during such a copy operation, the RAM area is in a destroyed state because there has been no timing to restore it. As a result, there were drawbacks such as programs running out of control and unreadable data being displayed.

In order to solve this drawback, it is possible to initialize the RAM area whenever the system is turned on, but in that case, other documents in memory will also be cleared unconditionally. This is inconvenient.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above drawbacks and provide a document creation device that can initialize the RAM area only when it is recognized that the ¥L source has been cut off.

[Summary of the invention]

According to the document creation device of the present invention, a power cutoff flag is set at the start of floppy disk copying (immediately before data is read into the RAFd area), and the flag is turned off when the floppy disk copying is completely completed. Reset. Based on this flag, the RAM area is initialized only when it is recognized that the power has been cut off midway through. This makes it possible to prevent the program from running out of control, and also to prevent documents in the memory from being unconditionally cleared.

[Embodiments of the invention]

FIG. 1 shows a block configuration of a Japanese word processor as an embodiment of the document creation device of the present invention. 10 is a central processing unit (CPU) that controls the entire apparatus. Reference numeral 12 is a ROM and has a GLODRAM area 14 in which programs for controlling the entire device, programs for creating and modifying external characters, etc. are stored. The ROM 72 further includes a character pattern area 16 in which character patterns corresponding to character codes including kanji handled by the device are registered, and various dictionaries for converting readings input in "kana" or "romaji" into kanji. It has a dictionary area No. 8 in which are registered.

It is a 20 dRAM and has a document area for storing character code strings of input documents and a custom character/f-turn area for registering custom character patterns.

31 is a key date interface (KB-IF),
Is 33 the key? - (K B ). 35 is a display controller (display CNT), and 37 is a display device.

The display 37 is, for example, a liquid crystal display having a 32 (vertical) x 240 (horizontal) dot configuration.

41 is a printer interface (PRT-IF);
43 is a printer (PRT) that prints kanji characters, etc. under the control of the CPU JO. 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 45 is a floppy disk drive interface (FDD-IF).

FIG. 2 shows a control routine for disk copying in the floppy disk drive shown in FIG. In step 51, the CPU 10 checks the status and confirms that the disk (in this case, the source disk) has been set. Next, in Stella F55, the disc (
Check whether write protection is set on the source 7'4. If write protection is not set, the Stellar fss displays a message "Please set write protection" on the display 37. In accordance with this display, the operator operates the write maintenance tab provided on the 3.5φ floppy disk. As a result, there is no possibility that data will be written to the source disk by mistake. If write protection is set in step 55, a power cutoff flag is set in step 56. Next, data is read from the source disk and stored in RAM 20 in step 57 .

Next, in step 59, it is confirmed that the destination disk has been lifted. Furthermore, step 6
3, it is checked whether write protection is set on the destination disk. If write protection is set, "in step f61"
Please remove write protection. ' is displayed on the display 37. The destination disk operates the write-protection pawl provided on the destination disk according to this message, resets the write-protection, and
Reset to FDD47. As a result, the destination disc can be engraved. Next, in step 65, the RAM is stored on the destination disk.
Write the contents of the source disk stored in 20. Next, in Stella 2'67, it is determined whether the copying operation has been completed. If the copying operation is not completed, the process returns to Stella f51 and repeats the above-mentioned operation. On the other hand, when the copy operation is completed, the power cutoff flag is reset at Stella 7°68. Then, in step 69, the RAM is initialized, and the copy routine ends.

In the above configuration, if the power is interrupted before the copy operation is completed, ie, at steps 57 to 67 in FIG. 2, the power flag remains unreset.

Therefore, as shown in Fig. 3, it is determined whether the power cutoff flag is set when the system power is turned on.
If it is set, it is determined that the power was cut off midway through, and the RAM is initialized.

〔Effect of the invention〕

As described above, the document creation device of the present invention includes means for setting a power cutoff indication flag before the disk is played during disk copying, and resetting the power cutoff indication flag when the disk copying is completed. and a means for detecting the setting of the power cutoff display flag and initializing the memory when the power to the document creation device is interrupted during the disk copying. A runaway can be avoided, and documents in the memory can be prevented from being unconditionally cleared.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the document creation device of the present invention, FIG. 2 is a flowchart showing a disk copy control routine in the floppy disk drive shown in FIG. 1, and FIG. 7 is a flowchart showing control when powering up the system power supply. 10...CPU, 12...ROM120...RA
M, 37...display unit, 47...floppy disk drive. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 3

Claims (1)

[Claims] In a document creation device having a floppy disk device and a memory for storing data read from the floppy disk device, means for setting a power cutoff indicator flag before reading the disk when copying a disk; means for resetting the power cutoff display flag upon completion of the process; and means for detecting the setting of the power cutoff display flag and initializing the memory when the power to the document creation device is cut off during the disk copying. A document creation device comprising: