JPH05134822A - Electronic disk device - Google Patents

Abstract

PURPOSE:To provide the electronic disk device which can execute a format operation by remote control from a central processing unit(CPU). CONSTITUTION:An electronic disk device 1-1 is composed of a port control part 11, common control part 12, memory part 13, EPROM 14 as an address converting means, address setting part 15 and data buffer 16. The port control part 11 and the common control part 12 are respectively connected through a common bus 111 to the data buffer 16. When a format instruction is generated from the CPU connected with an electronic disk controller 3 through a channel, as address information, a cylinder number and a track number are supplied from the electronic disk controller 3 to the common control part 12 every unit of one track. According to a real address converted by the address converting means 14, the common control part 12 accesses the memory part 13 every unit of one track.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic disk device constituting an electronic disk subsystem, and in particular, a remote control from a central processing unit enables a format of a format defined by a magnetic disk device or the like. The present invention relates to an electronic disk device.

[0002]

2. Description of the Related Art An electronic disk device has a structure of an electronic disk subsystem as shown in FIG. 2 and is incorporated in a computer system.

This electronic disk subsystem is composed of n electronic disk devices 1-1 to 1-n and an electronic disk control device 3. Electronic disk controller 3
Is located between the channel of the central processing unit (CPU) and the electronic disk devices 1-1 to 1-n, and controls the electronic disk devices 1-1 to 1-n based on the instruction of the channel program.

Such a conventional electronic disk device 1-1
˜1 to n are inside thereof, a memory section including an IC memory which is a plurality of volatile storage elements, a DIP switch for setting a device type of the electronic disk devices 1-1 to 1 to n, and a memory section. And a processor unit that controls the writing and reading of data to and from the memory unit and formats the memory unit on a track-by-track basis.

In the electronic disk devices 1-1 to 1-n used in such a form, when the memory section is formatted, the format is activated from the operation panel connected to the processor section and Formatted all memory.

[0006]

Therefore, in the conventional electronic disk device, there is a problem that the format cannot be performed by manual intervention unless the maintenance staff is always resident in the electronic disk device at the time of formatting.

The present invention has been made in view of the above problems, and an object thereof is to provide an electronic disk device capable of performing a format operation by remote control from a central processing unit when performing a format. is there.

[0008]

SUMMARY OF THE INVENTION An electronic disk device according to the present invention includes a memory section composed of a plurality of memory elements, and a common control section for receiving address information of the memory section and controlling access to the memory section. And address conversion means for converting the address information into a real address,
The common control unit inputs the address information for each predetermined unit, and accesses the memory unit for each predetermined unit by the real address.

In such an arrangement, in the electronic disk device of the present invention, for example, a format command is issued from the central processing unit connected to the electronic disk control device via the channel, and the electronic disk control device outputs the predetermined unit for each predetermined unit. Address information is supplied to the common control unit. The common control unit accesses the memory unit for each predetermined unit by the real address converted by the address conversion unit.

As a result, when formatting is performed in a format based on arbitrary address information, the formatting operation can be performed by remote control from the central processing unit.

The electronic disk device according to the present invention is
A memory unit including a plurality of memory elements, a common control unit that receives a cylinder number and a track number as address information of the memory unit and controls access to the memory unit, and converts the address information into a real address. The common control unit inputs the address information for each track and accesses the memory unit for each track by the real address.

According to the electronic disk device of the present invention having such a configuration, for example, a format command is issued from the central processing unit connected to the electronic disk control device through the channel, and the electronic disk control device outputs the track unit by track unit. A cylinder number and a track number are supplied as address information to the common control unit. The common control unit accesses the memory unit on a track-by-track basis using the real address converted by the address conversion means.

Thus, when formatting is performed in the format defined by the magnetic disk device or the like,
Formatting can be performed for each track in sequence, and the format operation can be performed by remote control from the central processing unit.

Further, in the electronic disk device according to the present invention, the address conversion means is constituted by an EPROM (erasable programmable read only memory), the address information is used as an address of the address conversion means, and the address is input. It is preferable to output the corresponding data as the real address.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an electronic disk device according to an embodiment of the present invention. Since the configuration of the entire system is the same as that of FIG. 2, the description will be given in this embodiment as it is. In addition, the electronic disk device 1-
Since 1 to 1-n have the same configuration, the electronic disk device 1-1 will be described below as an example.

The electronic disk device 1-1 includes a port control unit 11, a common control unit 12, a memory unit 13, an EPROM 14 as an address conversion unit, an address setting unit 15,
And a data buffer 16. The port controller 11 and the common controller 12 are connected to the data buffer 16 via the common bus 111, respectively.

The port controller 11 controls the interface between the electronic disk controller 3 and the electronic disk device 1-1 shown in FIG. The common control unit 12 writes / reads data to / from the memory unit 13 according to a command from the electronic disk control device 3. The memory unit 13 is composed of an IC memory composed of a plurality of volatile storage elements.

The EPROM 14 holds address conversion control data, inputs the cylinder number and track number 112 supplied from the common control unit 12 as an address of the EPROM 14, and stores the data corresponding to the address in the memory of the memory unit 13. Address (real address) 113
Is output as. Address setting unit 15
Then, the address generated by the EPROM 14 is set. The data buffer 16 is a buffer for data transferred between the electronic disk control device 3 and the memory unit 13.

Next, the format operation and the memory data read / write operation of this embodiment will be described with reference to FIGS. 1 and 2.

(1) Format operation

When the electronic disk control device 3 receives a format command from the central processing unit via a channel (not shown), it sequentially supplies the cylinder number and the track number of the memory section 13 to the electronic disk device 1-1. That is, assuming that the cylinder number is 00 to xx (xx is the last cylinder number) and the track number is 00 to yy (yy is the last track number), 0000001, ...,
00yy, 0100, 0101, ..., 01yy, ..., x
, xxyy are supplied in order of one track to the common control unit 12 via the port control unit 11 in the order of x00, xx01 ,.

The common control unit 12 supplies the sent cylinder number and track number 112 to the EPROM 14. The address conversion EPROM 14 stores the supplied cylinder number and track number 112 in the EPROM 14
And the data corresponding to the address is output as the memory address 113 of the memory unit 13. When the converted memory address 113 is set in the address setting unit 15 and the corresponding address is accessed, the common control unit 12 causes the control signal 114 to display the contents of the corresponding address in the memory unit 13 in the format shown in FIG. Format.

In FIG. 3, the physical address PA is a physical cylinder number and a physical track number, the home address HA is a physical cylinder number and a physical track number,
Count units R0-C represent the cylinder number, track number, and record number designated by the host device, respectively. In the data part, all bits are 0.

(2) Memory data read and write operations

In the case of data writing, when the electronic disk control unit 3 receives a data write command from the central processing unit via a channel not shown, it outputs the cylinder number, track number and record number of the memory unit 13 designated by the command. Common control unit 12 in the electronic disk device 1-1
Supply to. The common control unit 12 supplies the sent cylinder number and track number 112 to the EPROM 14. The EPROM 14 converts this into the memory address 113 of the memory unit 13. When the memory address 113 is set in the address setting unit 15 and the corresponding address is accessed, the common control unit 12 sets the data buffer 16 to the corresponding address in the memory unit 13 by the control signal 114.
Write the data sent via.

Also in the case of data reading, as in the case of data writing, the address of the memory section 13 is set, and the data of the corresponding address is transferred to the electronic disk control unit 3 via the data buffer 16 and the port control section 11.
Sent to.

[0028]

As described above, according to the electronic disk device of the first aspect, the electronic disk control device supplies the address information to the common control unit for each predetermined unit,
By the real address translated by the address translation means,
Since the memory section is accessed in units of a predetermined unit, when the format is performed based on arbitrary address information, the format operation can be performed by remote control from the central processing unit.

According to the second aspect of the present invention, the central processing unit connected to the electronic disc control unit via the channel issues, for example, a format command, and the electronic disc control unit issues track by track units. The cylinder number and the track number are supplied to the common control unit as address information, and the memory unit is accessed on a track-by-track basis by the real address converted by the address conversion unit. When formatting is performed in the format used, each track can be sequentially formatted. Therefore, the format operation can be performed by remote control from the central processing unit, and it becomes unnecessary for maintenance personnel to be resident in the electronic disk device.

Further, according to the electronic disk device according to the first and second aspects, the processor unit which conventionally controls the reading and writing of the memory unit becomes unnecessary, which leads to a reduction in manufacturing cost and a reduction in system configuration cost. effective.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electronic disk device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an electronic disk subsystem using the electronic disk device of the present invention.

FIG. 3 is a diagram showing an example of a format format defined by a magnetic disk device or the like.

[Explanation of symbols]

1-1 to 1-n electronic disk device 3 electronic disk control device 11 port control unit 12 common control unit 13 memory unit 14 EPROM (address conversion means) 15 address setting unit 16 data buffer 111 common bus 112 cylinder number and track number ( Address information) 113 Memory address (real address)

Claims (3)

[Claims] 1. A memory unit composed of a plurality of memory devices, a common control unit for receiving address information of the memory unit and controlling access to the memory unit, and an address for converting the address information into a real address. An electronic disk device comprising: a conversion unit, wherein the common control unit inputs the address information in units of a predetermined unit and accesses the memory unit in units of a predetermined unit by the real address. .. 2. A memory unit composed of a plurality of memory devices, a common control unit for receiving access to the memory unit by receiving a cylinder number and a track number as address information of the memory unit, and the address information. Address conversion means for converting into a real address, and the common control section inputs the address information for each track,
An electronic disk device characterized in that the memory unit is accessed for each track by the real address. 3. The address conversion means is composed of an EPROM, and the address information is an address of the address conversion means, and data corresponding to the address input is output as the real address.
Alternatively, the electronic disk device described in 2.