JPS60122449A - Input and output controller of address variable system - Google Patents

Abstract

PURPOSE:To improve the performance of general-purpose by constituting the titled controller than an input/output controller address is set again optionally from a basic processing unit via an input/output interface to improve the working performance of the controller. CONSTITUTION:An input and output address value transmitted from a channel is transmitted to a comparator circuit 3 via a receiver circuit 1. On the other hand, either a specific address value or an optional address value received by an optional address value storage circuit 7 is selected and stored in an address register 5. Further, the comparator circuit 3 compares the input/output address from the channel with the value of a register 5 and only when they are coincident, a driver circuit 4 is started to respond to the channel. The change in the input/ output controller address by the basic processing unit is changed into an optional address storage circuit 7 via an input/output channel interface, then the circuit 6 is started and the content stored in the circuit 7 is transferred to the register 5.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a variable address input/output control device, and particularly to an input/output control device connected to a basic processing unit via an input/output channel interface. This invention relates to an input/output control device that can arbitrarily set human output address values.

[Prior art]

2. Description of the Related Art Conventional human output control devices include a fixed address type shown in FIG. 1 and an unfixed address type shown in FIG. In the figure, / is a channel (not shown)
The receiver circuit receives the input/output address values sent from the ROM.
or switches, 3 is a receiver circuit/and a unique address value setting means] and is connected to a circuit for comparing both address values, and DA is connected to this comparison circuit 3 and unique address value setting means 2 to respond to the channel. A driver circuit 3 is inserted between the receiver circuit 1 and the driver circuit DA, and is an address register for storing input/output address values received by the receiver circuit 1.

Next, the operation of the fixed address type human output control device shown in FIG. 1 will be explained. The human output address value or address information sent from the channel is sent to the receiver circuit/
Thereafter, in the comparator circuit 3, it is compared with the unique address value set in advance by the unique address value setting means. When both address values match, the comparator circuit 3 activates the driver circuit to output a unique address value, so that the input/output controller responds to the channel.

Next, the operation of the address indefinite type input/output control device shown in FIG. 2 will be explained. The human output address value sent from the channel is sent to the address via the receiver circuit.
It is stored in register 5 and activates driver circuit y to make the I/O controller respond to the channel unconditionally, ie, the I/O controller responds to all human output address values.

Since the conventional input/output control device is configured as described above, changing the input/output address value of the fixed address method requires work such as replacing the ROM or resetting the switch, and also causes the address to be undefined. This method has drawbacks such as the number of input/output control devices that can be connected to a channel is limited to /unit//channel.

[Summary of the Invention] This invention was made in order to eliminate (3) the drawbacks of the conventional devices as described above, and it incorporates the address register function of the address indefinite method into the fixed address method, and allows input from the basic processing unit. It is an object of the present invention to provide a variable address type input/output control device that can arbitrarily reset the human output address value of the input/output control device via an output channel interface.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Third
In the figure, /, 2 are respective receiver circuits and unique address value setting means similar to those in FIG. 6 is a circuit that compares the unique address value or arbitrary address value, the driver circuit for responding to the channel, the left is an address register that stores the unique address value or arbitrary address value, and 6 is this address register S. The logic circuit that controls the resetting operation is a circuit that holds any address value sent from the basic processing bag M (not shown) via the input/output channel interface (not shown) in the program. be.

Next, the operation will be explained. In FIG. 3, the input/output address value sent from the channel is sent to the comparator circuit 3 via the receiver circuit.

On the other hand, the address register SK contains an address value specific to the human output control device set by the specific address value setting means or an arbitrary address value received by the arbitrary address value holding circuit from the basic processing unit via the input/output channel interface. One of the address values is selected by the logic circuit 6 and stored. In comparison circuit 3, the human output address and address register sent from the channel! and only when they match, activates the driver circuitry to respond to the channel. To change the input/output control device address by the basic processing unit, first, the arbitrary address value holding circuit holds the address value to be changed via the input/output channel interface, and then the logic circuit 6 is activated to hold the arbitrary address value. This is made possible by moving the contents held in circuit 7 to address register j.

Note that although the above embodiment describes the case of a human output control device, it can also be applied to a simulator of a human output control device or a channel/output control device.
A tester may also be used, and the effect is similar to or better than that of the above embodiment.

〔Effect of the invention〕

As described above, according to the present invention, the human output control device address can be arbitrarily reset from the basic processing device via the human output channel interface.
This has the effect of improving the workability of the device and increasing its versatility.

[Brief explanation of the drawing]

1 and 2 are block diagrams of a conventional input/output control device, and FIG. 3 is a block diagram showing an embodiment of the present invention. /...Receiver circuit, Co...Unique address value means, 3.
・Comparison circuit, driver circuit,! ...address register, 6..logic circuit, ri..arbitrary address value holding circuit. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] The input/output control device compares a human output address value sent from a channel with a unique address value or an arbitrary address value of the input/output control device stored in an address register, the arbitrary address value 1. A variable address type input/output control device, characterized in that the address can be changed from a basic processing unit via an input/output channel interface.