JPH03258139A - Ieee-488 interface network - Google Patents

Abstract

PURPOSE:To attain exchange connection of a processing unit of a specific I/F by allowing an exchange to apply exchange connection using a device represented by data processing transmission information as a listener when a service request interrupt sent from the data processing unit of the specific I/F is received. CONSTITUTION:When a data processing unit 31 outputs an SRQ interrupt, a data exchange 1 receives the interrupt, the exchange 1 uses the unit 31 as a talker, its own equipment 1 is used as a listener, a link is set and a setting signal is sent. The unit 31 detects the signal, then the unit 31 sends talker/listener address information by setting a listener address as an address of a data processing unit 32. When the exchange 1 receives the information, the unit 31 is used as a talker and the unit 32 is used as a listener to set a link and a setting signal is sent. When the unit 31 detects it that its own equipment is designated to be a talker from the signal, the data transmission is started, and when it is detected that the unit 32 designates its own equipment to a listener, the receiver is started to transfer data between the units 31 and 32. When the unit 31 outputs a signal representing the end of data transmission, the exchange 1 detects it to disconnect the connection between the units 31 and 32.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an I/O system comprising a plurality of data processing devices including a personal computer connected to an IEEE-488 interface bus.
Relating to an EEE-488 interface network.

[Conventional technology]

Conventionally, when performing data communication between multiple devices connected via such an IEEE-488 interface bus, one of the data processing devices has an IEEE-488 interface bus.
It was necessary to operate as a controller for the 88 interface, accept requests from other data processing devices, and control connections.

[Problem to be solved by the invention] In the conventional communication method between data processing devices described above, IE
IEEE-48 whenever building a system of data processing devices connected via an EE-488 interface bus.
Although it is necessary to develop a data processing device that controls the 8 interface, it is technically complex to provide this controller function to the data processing device.

The object of the present invention is to provide an IEEE-488 interface controller having a data exchange that includes the functionality of an IEEE-488 interface controller.
88 ink face network.

[Means for Solving the Problems 1] When the IEEE-488 interface network of the present invention detects a service request interrupt sent from a data processing device in the rEEE-488 interface bus, the IEEE-488 interface network of the present invention Set up a link with the processing device as the talker and the own device as the listener,
means for transmitting the link setting signal; and receiving talker/listener address information sent by the data processing device that sent the service request interrupt in response to the link setting signal; A link is set up with a means for analyzing, a data processing device that has transmitted the talker/list address information as a talker, and a data processing device having the address of the listener indicated by the talker/wasner address information as a listener, and a link setting signal is sent. and means for monitoring data transfer on the link established by the talker/listener address information and releasing the link upon completion of the data transfer.

[Effect]

Upon receiving a service request C (hereinafter referred to as SRQ) interrupt sent from a data processing device using the IEEE-488 interface, the data exchange device uses the data processing device as a talker, sets its own data exchange device as a listener, and then responds to the data processing device. By receiving the talker/listener information sent from the IEEE-488 interface controller and making an exchange connection using the data processing device indicated by the listener information as the listener, the IEEE-
488 InkFus data processing equipment can be exchanged and connected.

[Example 1 Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a system configuration diagram of an embodiment of the IEEE-488 interface network of the present invention, FIG. 2 is a sequence chart of signals in the exchange connection between the data processing devices 31.3□ shown in FIG. 1, and FIG. is a configuration diagram of talker/listener address information.

This IEEE-488 interface network includes a data exchange device 1, an IEEE-488 interface bus 2, and an IEEE-488 interface data processing device 31.3□, ~, 3□ connected by the IEEE-488 interface bus 2. Become. Data exchange device 1
has an IEEE-488 control function and can be used with any data processing device 3. ~3. ．． SRQ interrupt 11 sent by
means for setting up a link with the data processing device that sent the SRQ interrupt 11 as a talker and the own data exchange device itself as a listener, and sending out a link setting signal 12; When the talker/listener address information 13 is received from the data processing device that sent out the SRQ interrupt 11 by the setting of means for setting a link in which the data processing device having the listener address indicated by the talker/listener address information 13 is used as a listener and transmitting the nonk setting signal 14; and a means for transmitting the nonk setting signal 14; It has means for releasing the link upon detecting a transfer end signal. Data processing device 30, 3□, ~, 3. ．． respectively, a means for sending an SRQ interrupt when requesting transmission, and a data exchange device l.
means for detecting a link setup signal 12 from a talker/
It has a means for transmitting the listener address information 13 and starting the transmission of the data 15 when detecting a link setting signal from the data exchange device 1 in which the own data processing device is set as the talker and the transfer destination is set as the listener. In the case of
4, and means for activating the receiving device when the signal is detected.

Next, the operation of this embodiment will be explained.

Now, when the data processing device 31 outputs the SRQ interrupt 11, the data exchange device 1 receives it, and the data exchange device 1 sets up a link with the data processing device 3 as the talker and its own data exchange device 1 as the listener. A link setting signal 12 is sent out. When the data processing device 3I detects this link setting signal, it sends talker/resteer address information 13 with the content shown in FIG. 3 and the address of the data processing device 32 as the listener address. When the data exchange device 1 receives the talker/listener address information 13, the data processing device 3. A link is set up with the data processing device 32 having the listener address of the talker/listener address information 13 as the listener, and the link setting signal 14 is sent out. When the data processing device 31 detects from this link setting signal 14 that it has designated itself as a talker, it starts transmitting data 15, and on the other hand, the data processing device 32 detects that it has designated itself as a listener. When detected, the receiving device is activated and data transfer between the data processing devices 3□ and 32 is performed.

Thereafter, when the data communication ends and the data processing device 3 outputs a data transmission end signal, the data exchange device 1 detects this and the data processing device 3. ．． 32 is disconnected.

〔Effect of the invention〕

As explained above, the present invention provides a data exchange system that
It has an IEEE-488 interface control function, receives SRQ interrupts, and exchanges connections between data processing devices using talker/listener address information.
When configuring an IEEE-488 interface network, this general-purpose data exchange can be used without providing a separate data processing device that operates as an IEEE-488 interface controller.
-488 interface data processing equipment can be exchanged, and if a plurality of listener addresses are required, opening communication can be achieved by writing them in the listener addresses of the talker/listener address information.

[Brief explanation of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the IEEE-488 interface network of the present invention, and FIG. 2 is a diagram of the data processing device 3. ．． FIG. 3 is a sequence chart of signals in an exchange connection between 32 and 32, and a configuration diagram of talker/listener address information. 1... Data exchange device, 2... IEEE-488 interface bus, 3, .
32. ~, 3n... data processing device. Figure 1

Claims (1)

[Claims] 1. In an IEEE-488 interface network consisting of a plurality of data processing devices including personal computers connected via an IEEE-488 interface bus, a service request interrupt sent from the data processing device is When detected in the IEEE-488 interface bus, a link is set with the data processing device that sent the service request interrupt as the talker and the own device as the listener,
means for transmitting a setting signal for the link; and means for receiving talker/listener address information sent by the data processing device that sent the service request interrupt in response to the link setting signal, and analyzing the talker/listener address information. means for setting a link in which the data processing device that sent out the talker/listener address information is the talker and the data processing device having the listener address indicated by the talker/listener address information is the listener, and transmits a link setting signal. and means for monitoring data transfer on the link set by the talker/listener address information and releasing the link when the data transfer is completed. 488 interface network.