JPS5855587B2 - Data transfer method of magnetic bubble storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transfer method between a magnetic bubble unit in a magnetic bubble storage device and a control device that controls it.

In a storage device using magnetic bubbles, a plurality of minor loops that store magnetic bubbles, a major loop that is a common information transmission part for these, and a connecting part between the minor loops and the major loop are provided to prevent the passage of the magnetic bubbles or the major loop. a transfer gate that performs blocking; a reader that reads the presence or absence of a magnetic bubble on the major loop;
It mainly consists of a writer for writing information, a control circuit for controlling these, and a data transfer bus, and the magnetic bubbles on the minor loop and major loop rotate at the same timing.

When writing and reading are controlled, writing and reading are performed by transferring positional information determined by address information previously stored in a magnetic bubble to a predetermined writer and reader position using a rotating magnetic field.

In this case, it is necessary to confirm that the rotating magnetic field is rotating correctly, which requires confirmation of the position of each magnetic bubble before data transfer.

For example, by adding address information at the beginning of data transfer, writing the address information as part of the data, and reading the already written address information when writing or reading data, regular rotation can be performed. There is a method to check whether the information is correct or not.

In this system, the data transfer bus for writing and reading is sometimes used only for address information, which limits the amount of data transferred.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to enable write and read data transfer without being affected by address information transfer.

In order to achieve the above object, the present invention provides a data bus for transferring read and write data and an address bus for transferring address information, and the data bus control and address control are performed independently. It was designed to be controlled.

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

Figure 1 shows a system diagram of a magnetic bubble storage device.
Reference numeral 1 denotes a control device for controlling reading and writing of data from a plurality of magnetic bubble units 2 and for identifying writing and reading positions stored in advance as part of data in the magnetic bubble units 2. Performs address information transfer control, etc.

Reference numeral 3 indicates an address bus for transferring information indicating the magnetic bubble rotation position, which connects the control device 1 and each magnetic bubble unit 2, and 4 indicates read data and write data from the similarly connected magnetic bubble units 2. This is a data bus for data transfer.

As a result, when data is written into or read from the magnetic bubble unit 2, address information for identifying the write position and the read position is first transferred to the control device 1 via the address bus 3.

When the control device 1 determines the position at which writing or reading is to be performed from the address information, reading and writing are performed from the magnetic bubble unit 2 through the data bus 4.

This will be further explained in detail with reference to FIG.

As shown in the figure, the control device 1 includes a data register 11 that temporarily stores data transferred from the magnetic bubble unit 2 through the data bus 4, an address register 12 that temporarily stores similarly transferred address information, and a circuit (not shown). an address information register 15 that stores address information in advance;
The output of address information register 15 and address register 1
2, and depending on the comparison result, data bus 4 is
It consists of a comparator circuit 13 for causing a read or write operation to be performed, and a read enable generation circuit 14 for generating a signal for selecting an address bus based on address information from an address information register 15.

The magnetic bubble unit 2 is connected to the control device 1 by an address bus 3 and a data bus 4, and has a bus driver 16 that operates according to arbitrary address information, and a bus driver 16 that stores data and address information as part of the data. The magnetic bubble chip 18 is composed of a magnetic bubble chip 18 and a read/write device 17 for reading and writing data and address information from the rotating magnetic bubble chip 18.

In FIG. 2, when address information is input to the address information register 15 of the control device 1 by a circuit not shown,
At the same time, the magnetic bubble chip 18 is started to rotate by a circuit (also not shown).

Further, the address information is transferred to the read enable generation circuit 14.

Therefore, the read enable generation circuit 14 generates an on/off control signal for the bus driver 16 based on the address information.

On the other hand, the data (address information) on the magnetic bubble chip 18 is read by the read/write device 17 and inputted to the bus driver 16 as a logic signal.

When the logical signal and the read enable signal are ANDed, the bus driver 16 is activated and data, which is address information, is placed on the address bus 3 through the bus driver 16.

The data is stored in address register 12 via address bus 3.

Then, the comparison circuit 13 identifies whether or not the output of the address register 12 and the output of the address information register 15 match, and when they match, an output 13' is obtained and the data register 11 is activated. , first store the data and put it on the data bus 4, read it and write it to the device 1.
γ is written on the magnetic bubble chip 18.

Also, the data register 11 is activated by the coincidence signal 13', and the data is read from the magnetic bubble chip 18 and written by the writer 1.
7 reads the data and writes it to the data register 11 through the data bus 4.

In this way, the reading of address data and the writing or reading of data from the magnetic bubble unit can be controlled simultaneously and independently based on the specified address information, and the amount of data transferred can be limited by reading the address data. I won't give it.

As is clear from the above-mentioned embodiments, according to the present invention, an address data transfer bus is provided between a control device that performs address data reading control, data writing and reading control, etc. from a magnetic bubble unit, and a magnetic bubble unit. A write and read data transfer bus is provided, and each data is transferred using a dedicated bus.

Therefore, data can be written and read without being affected by address information read control, and the amount of data transferred can be significantly increased compared to the conventional method.

[Brief explanation of the drawing]

The figures are diagrams for explaining the data transfer method of the magnetic bubble storage device according to the present invention, with FIG. 1 being a system diagram thereof, and FIG. 2 being a block diagram for explaining a specific circuit configuration. 1... Control device, 2... Magnetic bubble unit, 3... Address bus, 4...
Data bus, 11...Data register, 12.
... Address register, 13 ... Comparison circuit, 14 ... Read enable generation circuit, 15.
... Address information register, 16 ... Bus driver, 17 ... Write, reader, 18 ...
...Magnetic bubble chip.

Claims (1)

[Claims] 1 Consisting of a plurality of magnetic bubble units and a control device commonly connected to the magnetic bubble units via a data transfer bus, the magnetic bubble rotation position is stored as part of data in the magnetic bubbles in the magnetic bubble units. Address information indicating the magnetic bubble is read by a command signal from the control device, the rotational position of the magnetic bubble is identified, and data is written to or read from the magnetic bubble based on the identification data. In the data transfer method between the control device and the magnetic bubble unit, an address bus for transferring address information indicating a rotational position of the magnetic bubble between the control device and the magnetic bubble unit;
1. A data transfer system for a magnetic bubble storage device, characterized in that a data bus is provided for transferring write and read data, and the address bus control and data bus control can be controlled independently.