KR920009779B1 - Floppy disk operating device and operating method - Google Patents

Abstract

The apparatus for preventing access erros performs access or repeated access of floppy disk inserted to a personal computer according to time data memorized in memory means. The apparatus comprises froppy disk operating means (1) for rotating the disk and performing access to data memorized in the disk; control means (2) for controlling the floppy disk operation and receiving signals from the means (1); main control means (4) for reading data in memory means (6), and for supplying disk operating signal from interrupt means (8) via interrupt control means (7) to the control means (2); timer means (3) for supplying pulse signal to the means (4); time-data generating means for memorizing the data in the memory means (6).

Description

Floppy Disk Drive and Driving Method

1 is a block diagram of a floppy disk drive device according to the present invention.

2 is a flow chart for explaining the operation of FIG.

* Explanation of symbols for the main parts of the drawings

1: floppy disk operation means 2: floppy disk operation control means

3: timer means 4: main control means

5: time data storage means 6: memory means

7: interrupt control means 8: interrupt means

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floppy disk drive of a personal computer and a driving method thereof, and more particularly to a floppy disk drive for accessing a floppy disk inserted into a personal computer or accessing a floppy disk according to time data stored in a memory means. And a driving method thereof.

Typically, a personal computer consists of two floppy disk drives, 5.25 inch and 3.5 inch drives. If you access the 3.5-inch floppy disk after inserting the floppy disk into the first 5.25-inch driver and then accessing the 3.5-inch floppy disk, the driver must access the 3.5-inch floppy disk, but the driver frequently accesses the first inserted 5.25-inch floppy disk. In addition, the same access error occurred when changing from a 3.5-inch floppy disk to a 5.25-inch floppy disk.

Accordingly, an object of the present invention is to provide a floppy disk drive device and a method for driving the same, which can solve the above-mentioned disadvantages by allowing the re-access of the floppy disk to be accessed according to time data stored in the memory means.

The floppy disk drive device of the present invention rotates the floppy disk and transmits a signal from the floppy disk operating means (1) for accessing the stored data in the floppy disk via the floppy disk operating control means (2) for controlling the operation of the floppy disk. And the command data in the interrupt address of the interrupt means 8 according to the signal from the floppy disk actuating means 1 are supplied via the interrupt control means 7 to decrypt the command data to operate the floppy disk. Is supplied to the floppy disk operation control means (2), the main control means (4) configured to receive data stored in the memory means (6) and to read the data value; A timer means (3) configured to supply a pulse signal and to store constant time data in the memory means (6). Is characterized by consisting of a time data generating means (5).

The floppy disk driving method of the present invention comprises the steps of: storing time data stored in advance by the start signal from the memory signal; decreasing the data stored in the memory means by 1 according to the pulse signal output of the timer means and operating the floppy disk. And accessing the floppy disk after accessing the floppy disk from the step, reading the data stored in the memory means when accessing the floppy disk or accessing the original floppy disk again, and the data value to be read in the step “0”. Re-access the floppy disk by reading whether the data is read and storing the pre-determined time data in the memory means, storing the access and processing the accessed data, and determining whether the read data value is "0". According to the first time the floppy disk is accessed and processed data And returning to the step of storing the image.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a block diagram of a floppy disk drive apparatus according to the present invention, wherein the floppy operating means 1 for rotating the floppy disk and accessing stored data in the floppy disk is a floppy disk for controlling the operation of the floppy disk. The main control means 4 requests an interrupt signal for operating the floppy disk via the operation control means 2, and data corresponding to, for example, two seconds from the time data generating means 5 is stored in the memory means 6; The main control means 4 is connected to an interrupt address, for example interrupt 13h, which stores command data for driving the floppy disk of the interrupt means 8 through an interrupt control means 7. The command signal of this interrupt address is decoded.

The command signal decoded by the main control means 4 is supplied to the floppy disk operation control means 2, and the floppy disk operation means 1 operates by the floppy disk operation control means 2 to operate the floppy disk. In this case, the timer means (3) is supplied to the main control means (4), for example, in which a pulse signal whose cycle is changed 18.2 times per second is generated.

The main control means 4 decrements the time data stored in the memory means 6 by one each time a pulse signal of one cycle is supplied from the timer means 3. That is, the main control means (4) reads the time data of the memory means (6) upon request of an interrupt signal for operating the floppy disk from the floppy disk operation means (1) via the floppy disk operation control means (2). If the value is "0", the floppy disk is operated by the interrupt means 8 to access the data. Otherwise, the data previously accessed (if not "0") is retained.

FIG. 2 is a flowchart for explaining the operation of FIG. 1, in which the time data from the time data generating means 5 is stored in the memory means 6 from the start signal, for example, 36.4 corresponding to 2 seconds. Proceed to 102.

In step 102, the time data stored in the memory means 6, for example, 36.4 is reduced by one according to the pulse signal output from the timer means 3, and the procedure proceeds to step 103. The floppy disk is operated on and the process proceeds to step 104 to access the working disk.

If the floppy disk is exchanged or the access request is requested again while processing the data accessed in step 104, the process proceeds to step 105, in which the time data stored in the means 6 of the memory is read and then step 106 Proceeds to).

In step 106, if the value read in step 105 is "0" or not, the process proceeds to step 107, in which the floppy disk is operated again and accessed in this step 107. Proceed to step 109.

If the judgment of step 106 is YES, the process proceeds to step 108 where the data retained in step 104 is maintained while being processed and the step 101 is returned.

In step 109 the time data is again stored in the memory means 6 and the flow proceeds to step 108.

That is, even when the floppy disk is exchanged for access after the first floppy disk is accessed, the data in the current floppy disk can be accurately accessed according to the data value of a predetermined time.

As described above, according to the present invention, there is an excellent effect of preventing an access error that occurs when the first floppy disk is changed to access or when the floppy disk is being accessed again.

Claims (2)

In the floppy disk drive apparatus, a signal from the floppy operating means (1) for rotating the floppy disk and accessing stored data in the floppy disk is passed through the floppy disk operating control means (2) for controlling the operation of the floppy disk. Received, decoded via the interrupt control means 7 the command data in the interrupt address of the interrupt means 8 according to the signal from the fraud floppy disk actuating means 1, and decodes the signal for operating the floppy disk. A main control means 4 which is supplied to the floppy disk operation control means 2 and configured to receive data stored in the memory means 6 and read the data, and a pulse signal of a predetermined period to the main control means 4; A timer means (3), configured to supply a; and to store constant time data in the memory means (6). A floppy disk drive device, characterized in that consisting of a time data generating means (5). A method of driving a floppy disk, the method comprising: storing time data stored in advance from a start signal to a memory means, decreasing data stored in the memory means by one according to a pulse signal output of a timer means, and operating a floppy disk; After accessing the floppy disk from the step, accessing the floppy disk by accessing it or re-accessing the first disk, reading the data stored in the memory means, and whether the data value read in the step is "0". Re-access the floppy disk in accordance with the determination, and store the pre-determined time data in the memory means, process the accessed data, and access the floppy disk according to the determination of whether the read data value is "0". Processing the data and storing the predetermined time data. Floppy disk driving method comprising the step of returning.