JPH05204550A - Magnetic disk control circuit - Google Patents

Abstract

PURPOSE:To transfer sectors, which are not continuously arranged in a track and between tracks of a magnetic disk device, with one instruction. CONSTITUTION:Register parts 3 to 5 are provided where plural first track numbers, first sector numbers, and numbers of transfer sectors of data transfer of the magnetic disk device are individually stored, and a read/write control part 2 controls not only the direction of the transfer destination of data temporarily stored in a data buffer part 1 but also read/write of registers. In accordance with this control, a drive interface part 6 takes in data stored in registers and outputs a control signal to the magnetic disk device to detect the objective sectors.

Description

Detailed Description of the Invention

[0001]

The present invention is used for controlling a magnetic disk in information processing. The present invention relates to a magnetic disk control circuit capable of continuously transferring data with one transfer command even if sectors are not arranged continuously in a track and between tracks.

[0002]

2. Description of the Related Art A conventional magnetic disk control circuit stores a track register section for storing a track number of a magnetic disk apparatus, a sector register section for storing a sector number of a magnetic disk apparatus, and a number of sectors for data transfer. When a plurality of sectors of the magnetic disk device are continuously transferred, the count register unit is provided, and when the sectors are not arranged continuously within the track or between the tracks, the head is set for each unit of the continuous sectors. The transfer command for storing the track number, the start sector number, and the transfer sector number was repeatedly sent.

[0003]

In such a conventional magnetic disk control system, when data is continuously transferred by a plurality of sectors of a magnetic disk device, the track number and the sector number need only be incremented by one count. Therefore, if the sectors are not continuously arranged in the track and between the tracks, the data transfer by the sector cannot be continuously performed by one transfer command. Therefore, a transfer instruction is required several times, and an interrupt processing request is generated to the information processing device every time one transfer instruction is completed, which causes a problem that the overall transfer speed becomes slow.

The present invention solves such a problem, and a circuit capable of continuously transferring data by one transfer command even if sectors are not arranged continuously in a track and between tracks. The purpose is to provide.

[0005]

According to the present invention, there is provided a track register section for storing a track number of a magnetic disk device,
The sector register unit that stores the sector number of the magnetic disk device, the count register unit that stores the number of sectors for data transfer, and the data temporarily transferred to and from the magnetic disk device via the external data bus line are temporarily held. A data buffer unit, a read control signal that controls the direction in which the data stored in the data buffer unit is stored according to a read control signal and a write control signal, and a read / write control for the register In a magnetic disk control circuit comprising a write control section and a drive interface section for reading data from the respective registers under the control of the read / write control section and outputting the data to a magnetic disk device via a drive control line, the sector register section Is the sector number of the magnetic disk unit Including means for several stores, said count register includes means for storing a plurality of number of sectors for data transfer, the drive interface unit,
It is characterized in that it comprises means for continuously executing a plurality of numbers and numbers stored in the sector register section and the count register section in response to one transfer instruction.

The track register section includes means for storing a plurality of track numbers of the magnetic disk device, and the drive interface section includes means for continuously executing the plurality of track numbers in response to one transfer command. Is desirable.

[0007]

Operation: Direction control of whether the read / write control unit stores the content of the data temporarily stored in the data buffer unit in the track register unit, the sector register unit, or the count register unit according to the read control signal and the write control signal. And performing read / write control with each of the registers. The drive interface unit that receives this control takes in the corresponding data from the registers and outputs a control signal to the magnetic disk device to detect the target sector.

As a result, when a plurality of sectors of the magnetic disk device are continuously transferred, the data transfer can be performed by one transfer command even if the sectors are not continuously arranged in the track and between the tracks. You can

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration according to the embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of the embodiment of the present invention.

A magnetic disk control circuit 20 according to an embodiment of the present invention.
Is connected to the central processing unit 23 connected to the storage device 21 and the operation display terminal 22 via the external data bus line 7, and further connected to the magnetic disk device 24 via the internal data bus line 10, and the magnetic disk device. Via a track register unit 3 for storing the track numbers of 24, a sector register unit 4 for storing the sector numbers of the magnetic disk device, a count register unit 5 for storing the number of sectors for data transfer, and an external data bus line 7. Data buffer unit 1 for temporarily holding data to be exchanged with the magnetic disk device, a read control line 8 and a write control line 9
Direction control of which of the registers 3, 4, 5 stores the data stored in the data buffer unit 1 in accordance with the control signal from
And a read / write control unit 2 for performing read / write control, and outputs data from the registers 3, 4, and 5 to the magnetic disk device through the read drive control line 12 under the control of the read / write control unit 2. Further, as a feature of the present invention, the sector register unit 4 includes means for storing a plurality of sector numbers of the magnetic disk device, and the count register unit 5 includes the number of sectors for data transfer. And a means for sequentially executing a plurality of numbers and numbers stored in the sector register unit 4 and the count register unit 5 in response to one transfer instruction. The track register unit 3 includes means for continuously executing a plurality of track numbers in response to one transfer command. Comprising means stores a plurality of track numbers of the magnetic disk device.

The data buffer unit 1 includes an external data bus line 7
And the data of the internal data bus line 10 are exchanged, and the read / write control unit 2 controls the direction of the data bus of the data buffer unit 1 by the control signals from the read control line 8 and the write control line 9, and the track register unit 3,
Read / write control of the sector register unit 4 and the count register unit 5 is performed.

Further, the track register section 3 stores a plurality of head track numbers for data transfer of the magnetic disk apparatus, the sector register section 4 stores a plurality of head sector numbers for data transfer of the magnetic disk apparatus, and a count register section. Reference numeral 5 stores a plurality of transfer sector numbers for performing data transfer of the magnetic disk device. The drive interface unit 6 takes in the contents of the track register unit 3, the sector register unit 4, and the count register unit 5 and outputs a control signal to the magnetic disk device to detect the target sector.

The external data bus line 7 transfers data to and from the information processing device, and the read control line 8 reads data from the respective register units to the internal data bus line 10 and external data bus line. 7, and the write control line 9 sends the data from the external data bus line 7 to the track register unit 3, the sector register unit 4, and the count register unit 5.

The internal data bus line 10 includes a data buffer unit 1, a track register unit 3, a sector register unit 4, a count register unit 5, and a drive interface unit 6.
The register control line 11 is connected to the read / write control unit 2
Sends a control signal to be output to the track register unit 3, the sector register unit 4, and the count register unit 5.
The drive control line 12 outputs the control signal from the drive interface unit 6 to the magnetic disk device, and the buffer control line 13 outputs the control signal from the read / write control unit 2 to the data buffer unit 1.

FIG. 3 is a diagram showing a sector arrangement in the embodiment of the present invention. Assuming that the sectors that continuously perform data transfer are sector 1, sector 2, and sector 3 of track 1, sector 5 and sector 6 of track 3, the first track from the external data bus line 7 to the track register unit 3. The numbers 1 and 3 are stored, the sector register unit 4 stores the first sector numbers 1 and 5, and the count register unit 5 stores the transfer sector numbers 3 and 2.

Next, when data transfer is started, the drive interface section 6 stores the first data in the track register section 3 to "1", the sector register section 4 to "1", and the count register section 5 to "3". After the data is read and the sector detection of the magnetic disk device is started, and the sectors 1, 2, and 3 of the track 1 are detected and the data transfer for 3 sectors is completed, the drive interface unit 6 is restarted.
Is the second data from the track register section 3 '3',
Sector register unit 4 to '5', count register unit 5
The respective stored data of "2" are read out, the sectors 5 and 6 of the track 3 are continuously detected, the data transfer for two sectors is completed, and all the data transfers are completed.

[0017]

As described above, according to the present invention, the head track number for data transfer of the magnetic disk device,
By making it possible to store multiple start sector numbers and transfer sector numbers, when consecutively transferring multiple sectors of a magnetic disk device, the sectors are not arranged consecutively within and between tracks. Also, there is an effect that data transfer can be performed with a single transfer instruction.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration according to an embodiment of the present invention.

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

FIG. 3 is a diagram showing a sector arrangement in the embodiment of the present invention.

[Explanation of symbols]

 1 data buffer unit 2 read / write control unit 3 track register unit 4 sector register unit 5 count register unit 6 drive interface unit 7 external data bus line 8 read control line 9 write control line 10 internal data bus line 11 register control line 12 drive control Line 13 Buffer control line 21 Storage device 22 Operation display terminal 23 Central processing unit 24 Magnetic disk device

Claims (2)

[Claims] 1. A track register unit for storing a track number of a magnetic disk device, a sector register unit for storing a sector number of a magnetic disk device, a count register unit for storing the number of sectors for data transfer, and an external data bus. A data buffer unit that temporarily holds data that is transferred to and from the magnetic disk device via a line, and the data stored in the data buffer unit is stored in any of the registers according to a read control signal and a write control signal. And a read / write control unit for controlling reading / writing from / to each register, and reading data from each register according to the control of the read / write control unit to a magnetic disk device via a drive control line. A magnetic device equipped with a drive interface for output. In the disk control circuit, the sector register unit includes a unit for storing a plurality of sector numbers of the magnetic disk device, the count register unit includes a unit for storing a plurality of sector numbers for data transfer, and the drive interface unit is A magnetic disk control circuit comprising means for continuously executing a plurality of numbers and numbers stored in the sector register section and the count register section in response to one transfer instruction. 2. The track register section includes means for storing a plurality of track numbers of a magnetic disk device, and the drive interface section continuously executes the plurality of track numbers in response to one transfer command. The magnetic disk control circuit according to claim 1, further comprising: