JPS6330954A - Simultaneous multi-address communication system - Google Patents

Abstract

PURPOSE:To improve reliability for the reception of a message in data transfer, by performing the ECC check of a reception message after receiving the message outputted from another processor onto a common bus, and receiving the reception message, and the result of the ECC check by a processor. CONSTITUTION:An ECC check part 5 checks the validity of the reception message inputted previously, and transfers it to the processor 6 through an output signal line 51, and also, outputs a correction code to a signal line 52 if an error is correctable, and informs it to the processor 6. When recognizing that the correctable error exists in the reception message by a recognition signal on the signal line 51, the processor 6 inputs the message form a reception message storage part 4 through a signal line 41, and after that, it receives the message from another processor by using the correction signal sent from the ECC check part 5 through the signal line 52, and correcting the message inputted to the processor 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to communication between FF processors in a multiprocessor system, and particularly to broadcast communication in such a communication system.

(Prior Art) Multi-broadcast communication has conventionally been widely employed in multiprocessor systems to simultaneously transmit the same processor communication information from a processor to a plurality of other processors.

Conventionally, in message communication, which is one-to-one processor communication, the sending processor checks whether the receiving processor is ready or not and then transfers the data. In broadcast communication, is the receiving processor in bad condition? Is data sent from the sender side processor without checking? Transferring.

(Problem A to be Solved by the Invention) As mentioned above, message data received by simultaneous broadcast communication is transferred under the control of the transmitting processor, so it is not received by message communication and becomes reminder message data. The drawback is that it is relatively unreliable.

Is the purpose of the invention to send messages? It stores the ECC of the stored transmitted message, selects the transmitted message and ECC one by one and outputs it to the common bus, and also transmits the message data output from other processors to the common bus to prevent injury. A simultaneous broadcast communication system that eliminates the above drawbacks by performing an ECC check on messages and configuring the processor to receive the results of the received message and EOO check, thereby making it possible to obtain highly reliable message data. It is about providing.

(Means for Solving Problems) The simultaneous broadcast communication system according to the present invention includes a transmitted message storage section, an EOC generation section, a selection section, a received message storage section, a Waa check section, and a processor. This is just a reminder.

The sent message storage section is for storing sent messages.

The EOO generation section is for generating ECC of a transmitted message.

The selection unit sends the transmission message from the transmission message storage unit onto the common bus, and then sends the transmission message from the EOO generation unit to the EOO-
This is for sending out on the i common bus.

The injury message storage section is for storing message data sent from other processors on the common bus.

The EOO check unit inputs the received message and the EOOy attached to the received message, and checks the EOO of the received message.
This is for performing an OO check and outputting a correction code.

The processor sends the transmitted message to the transmitted message storage section, and also receives all the received messages and the results of the EOO check.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the simultaneous broadcast communication system according to the present invention. In Figure 1, 10
0 is a data transmission section, 200 is a data reception section, 1 is a transmission message storage section, 2 is an IIEOO generation section, 3 is a selection section,
4 is a received message storage section, 5 is an EOO check section, 6
is a processor, and 7 is a common bus.

The data transmitting section 100 has a transmitting message storage section 1 and a BO
It is composed of an O generation section 2 and a selection section 3.

The data receiving section 200 has a received message storage section 4 and an EC.
C check section 5.

Now, we will perform simultaneous broadcast communication from the processor 6 to the other processors connected to the common bus 7. From the processor 6 through the signal line 61, the transmitted message storage section 1
Send message data to. The transmitted message inputted to the transmitted message storage section 1 is inputted to the selection section 3 via the output signal line 11, and outputted to the common bus 7 through the entire output signal line 31.

On the other hand, the output signal line 11 of the transmitted message storage section 1 is simultaneously input to the ECC generation section 2. When the transmitted messages are outputted one after another onto the common bus 7 and the transmitted message storage section 1 becomes full, the output of the selection section 3 is sent to the output signal line 21.
The friend signal is input to the EOO generator 2 via the common bus 7.
is output above.

As a result, the data is output on the common bus 7 according to the format shown in FIG.

Next, it is assumed that a simultaneous broadcast communication is performed from another processor to the processor 6. The data output onto the common bus 7 is stored in the received message storage section 4 through the signal line 71, and is also input into the EOO check section 5 at the same time. After the final data is input, EOO check section 5
In addition, EOO is input. EOO check section 5
is the validity fEOC of the previously entered received message
Vc is checked and transmitted to the processor 6 through the entire output signal line 51, and in the case of a correctable error, a correction code is outputted to the signal line 52 and transmitted to the processor 6.

When the processor 6 recognizes that the injury message has been correctly received by the recognition signal on the signal line 51, the processor 6 reads the message from the received message storage section 4 via the output signal line 41, and reads out the message from the other processors. Receive.

Signals that a received message has a correctable error @
When recognized by the recognition signal on 51, the processor 6 transmits the signal from the received message storage section 4 to the signal line 41? After inputting the message, the signal line 52'' is connected from the EOO check section 5.
Messages from other processors are received by correcting the message inputted to the processor 6 using the correction code sent through the processor.

(Effects of the Invention) As explained above, the present invention stores transmission messages, generates EOO=2 of the stored sent messages, sequentially selects the transmission messages and EC0i, and outputs them to the common bus. The state of the receiving processor is not considered by receiving the message output from the processor on the common bus, performing an EOO check on the received message, and configuring the processor to receive the received message and the result of the PJCC check. This has the effect that even when data is transferred from the transmitting processor, the reliability of the data transfer message reception can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the simultaneous broadcast communication system according to the present invention. FIG. 2 is an explanatory diagram showing the format of data broadcasted on the common bus of FIG. 1. 1.4...Message storage section 2...ECO generation section 3...Selection section 5...E
OO check section 6...Processor 7...Common bus 11.21, 31, 41, 51, 52, 61゜71...
・Signal line patent applicant NEC Co., Ltd. agent Patent attorney Inoro Jusai 1 Figure χ 2rXJ

Claims (1)

[Claims] a transmission message storage unit for storing a transmission message; and an EC for generating an ECC of the transmission message.
a selection unit for sending the ECC from the ECC generation unit onto the common bus after sending the transmission message from the transmission message storage unit onto the common bus; a received message storage section for receiving and storing a message sent from the processor of the processor;
an ECC check unit for performing a C check and outputting a correction code; and a processor for transmitting the transmission message to the transmission message storage unit and receiving the reception message and the result of the ECC check. A simultaneous broadcast communication system characterized by the following: