JPS6042981B2 - line adapter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a line adapter device used for data transmission between a computer and a terminal device, which automatically notifies the status of the computer.

When transmitting data between a computer and a terminal device, a line adapter device for line control is generally used with a configuration as shown in FIG.

In FIG. 1, 1 is a computer, 2 is a memory, 3 is a line adapter, 4 and 5 are modems, and 6 is a terminal. When the computer 1 transmits data to the terminal device 6, the computer 1 transmits data to the line adapter device 3.
Issue the 510 command. When the line adapter device 3 receives the 510 command, it reads the transmission data from the memory 2 and autonomously sends the read data onto the line. The transmitted data is
It is sent to terminal 6 via modem 4, line and modem 5. Data transmitted from the terminal 6 is sent to the line adapter device 3 via the modem 5, the line, and the modem 4. The line adapter device 3 autonomously stores the received data in a predetermined area of the memory 2. FIG. 2 shows a time sequence when the computer 1 executes processing in response to a request from a terminal and transmits the processing result to the terminal 6.

If you input a command and request processing from computer 1 when terminal 6 is at point 4, the requested processing will end at C.
The processing result is sent to the terminal 6 at the point in time. The terminal 6 cannot know the status of the computer until the processing results are sent to it. On the terminal 6 side, if the processing results for the requested processing are not sent no matter how long it takes, the terminal 6 may become anxious and want to know the progress status of the requested processing. SUMMARY OF THE INVENTION The present invention meets the above requirements and aims to provide a line adapter device that can notify a terminal of the status of a computer without imposing a load on the computer.

Therefore, the line adapter device of the present invention includes an electronic computer, a line adapter device connected to the computer, and a terminal connected to the line adapter device via a line, and the computer A line adapter device in a system configured to execute processing in response to processing requests from the terminal and send processing results to the terminal, the memory access means for accessing the main storage of the computer. and specific signal detection means for detecting whether a signal sent from the terminal is a specific signal, and data transmission means for transmitting data to the terminal, further comprising: When detects that a specific signal has been sent from the terminal, the memory access means reads the management table in the main storage device, and the data transmission means transmits data indicating the contents of the management table to the specific signal. It is characterized by being configured so that it is sent to the terminal that sent it. Hereinafter, the present invention will be explained with reference to the drawings. FIG. 3 is a block diagram of one embodiment of the present invention, in which 7 is a memory access circuit, 8 is a block diagram of an embodiment of the present invention;
is the buffer register, 9 is the address ● register, 10
11 is a transmission register, 12 is a code circuit, 11 is a transmission register, and 12 is a code circuit.
table, 13 is a timer, 14 is a break detection circuit, 1
5 indicates receiving registers, respectively.

Generally, a management table used for managing the system is provided in the memory 2, and the management table contains the status of the job requested from each terminal, that is, the RUN status, the WAIT status, or the swap status. - Information indicating whether the device is in an out state is written, and information indicating whether the device is in a normal state or down is also written. The contents of address register 9 indicate the address of the management table. The read management table information is set in the buffer register 8. The encoding circuit 10 encodes the contents of the buffer ● register 8 while referring to the code ● table 12, and sets this in the transmission register 11. The data in the transmission register 11 is converted into a serial signal and sent to the line. When the timer 13 becomes operational,
A read signal is given to the memory 2 at regular intervals.
The access address information at this time is the address information in the address register. The break detection circuit 14 connects the terminal to the modem 5, the line, the modem 4, and the reception register 1.
When the break signal is detected, the timer 13 is activated. Next, the operation of the apparatus shown in FIG. 3 will be explained.

When the operator of the terminal 6 presses a break key (not shown), a break signal is sent, and this break signal is detected by the break detection circuit 14. When the break detection circuit 14 detects a break signal, the timer 13
operates, and the necessary portion of the management table is read. The contents of the read management table are encoded in the encoding circuit 10.
and sent to terminal 6 via transmission register 11, modem 4, line and modem 5. On the terminal 6 side, the sent management table information is displayed on a display or the like. The operator at the terminal 6 can know the status of the computer 1 by looking at the screen displayed on the display. As is clear from the above explanation,
According to the present invention, the line adapter device autonomously transmits the contents of the management table to the terminal side using a break signal sent from the terminal as a trigger, so that the terminal side can grasp the progress status of the requested job. It becomes possible.

[Brief explanation of drawings]

Figure 1 is a diagram showing the communication method when communicating between a computer and a terminal, and Figure 2 is a diagram in which the computer 1 executes processing in response to a request from the terminal and sends the processing results to the terminal. FIG. 3 is a block diagram of one embodiment of the present invention. 1...Electronic computer, 2...Memory 183...Line adapter device, 4 and 5...Modem, 6...Terminal, 7...
...Memory ●Access circuit, 8...Buffer ●Register, 9...Address register, 10...Coding circuit, 11...Communication register, 12...Code table, 13...Timer , 14...Break detection circuit, 15...Reception register.

Claims (1)

[Claims] 1. Comprising an electronic computer, a line adapter device connected to the computer, and a terminal connected to the line adapter device via a line, and the computer processes in response to a processing request from the terminal. A line adapter device in a system configured to execute a processing result and send the processing result to the terminal, the line adapter device comprising a memory access means for accessing the main memory of the computer, and a memory access means for accessing the main memory of the computer, and a line adapter device configured to transmit the processing result to the terminal. The device includes specific signal detection means for detecting whether a signal is a specific signal, and data transmission means for transmitting data to the terminal, and further, the specific signal detection means detects when the specific signal is sent from the terminal. When it detects that
A line characterized in that the memory access means is configured to read a management table in the main storage device, and the data transmission means is configured to send a specific signal indicating the contents of the management table to a terminal. adapter device.