JPS6142042A - Monitor device - Google Patents

Abstract

PURPOSE:To reduce the general-parpose property of a monitor device and the burden of software by converting an interface to a standard interface of the inside of the monitor device, and controlling a data transfer by information given onto a memory. CONSTITUTION:The contents of the first area 11 are stored in the first register 25, and also the direction of a data transfer is discriminated by a decoder 28. In case when data is outputted, the contents of the second area 12 are stored as an output data in the second register 26, and thereafter, a controlling circuit 20 requests to receive the data, to devices 2-4 designated by a device address which has been set to the first register 25 through an interface converting part 31. In case when data is inputted, an output of the data is requested to the device designated by the device address which has been set to the first register 25. Subsequently, the controlling circuit 20 stores the data from the designated device, in the second register 26, and thereafter, writes its data in the second area 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a monitoring device used in an information processing device, and particularly to an input/output control circuit thereof.

(Prior Art) A monitoring device has various functions, but in order to realize these functions, it is usually assembled using a group of instructions or a group of microinstructions to control the monitoring device, like other logical devices. The most common method is to use a program that has been created.

Conventionally, with this type of monitoring equipment, after the configuration of the system to be monitored is determined, the specifications are determined in conjunction with the system operation method, resulting in a product-specific design and the need to develop each system individually. It required many parts and required a large amount of development man-hours. Furthermore, in today's systems made up of a wide variety of devices, interfaces with monitoring devices have also become diverse.

(Problem to be solved by the invention) Directly importing all of the above interfaces and controlling each interface one by one increases the amount of hardware and the burden on software, which is a practical disadvantage. Ta. Furthermore, when a configuration change such as an addition to the system occurs, there is a drawback in that the monitoring device must be changed by large-scale remodeling. In addition, if the various interfaces mentioned above are converted into one standard interface by some means, a program will be required to switch between data input and output, and if data input and output are frequently switched, software will be required. The disadvantage was that it increased the burden on people.

An object of the present invention is to select an arbitrary device from a plurality of devices connected to a monitoring device based on a value stored in advance in memory, simultaneously determine the data transfer direction, and transfer input/output data. The method is to first connect the individual devices through a standard interface, and to accommodate the differences between each interface individually with an interface converter, which eliminates the above drawbacks, standardizes the monitoring device, and improves the system. To provide a monitoring device configured to reduce the number of deceptive parts as much as possible, reduce development man-hours, flexibly respond to changes in system configuration, and reduce the burden on software when transferring input/output data. be.

(Means for Solving the Problems) A monitoring device according to the present invention includes first and second areas, selection means, control means, and interface conversion means.

The first and second areas are formed on memory.

The selection means 45 is for selecting a unique device from among the plurality of input/output devices in accordance with the values sequentially outputted from the first area.

The control means is for determining and controlling the input and output directions of data transferred between the second area on the memory and the selected device.

The interface conversion means is for converting all different interfaces of a plurality of input/output devices into a common interface.

(Example) Next, an example of the present invention will be described in detail with reference to the drawings.

The monitoring device according to the present invention is controlled by a microprogram stored in memory and software from a host device.

Figure tlc1 is a block diagram showing an embodiment of a monitoring device according to the present invention. In FIG. 1, 1 is a monitoring device, 2 to
4 are individual devices to be monitored, IO is a memory for storing a control program for the monitoring device 10, 11
combines a device address as information for identifying the device to be monitored, an address as information for handling multiple data with one device, and control information such as the direction of data to be transferred. the first to store
Area 12 is used as a pair with the control information in the first area 11, and is a second area for storing input/output data with the monitored device. 21 and 22 are address pointers indicating internal addresses of the eleventh and second areas 11 and 12, respectively. 24 is a selector for selecting which value of the first and second address pointers 21 and 22 is to be used during memory access; 20 is a control circuit for controlling the selector 24; On the other hand, 28 is a decoding circuit for decoding control information from the first area 11, 23 is a first/last type flip-flop for indicating the memory access sequence, and 27 is a decoding circuit for decoding the control information from the first area 11. This is a length counter that indicates a number. The control circuit 20 is the decoding circuit 2
8, first/last type flip 70 knob 23,
This includes a length counter 27. Reference numeral 31 denotes an interface converter, and control signals necessary for memory access and interface control signals such as data input/output direction are input from the control circuit 20 to the interface converter 31. 25 is the first address pointer 21
26 is a register for temporarily storing the contents of the memory 10 indicated by . 26 is a register for temporarily storing all input/output data to the memory address indicated by the second address pointer 22 .

The interface conversion unit 31 interfaces the internal standard interface of the monitoring device with each individual device, and absorbs differences in the number 1, polarity 1, and timing.

The above is an explanatory diagram of the hardware configuration in one embodiment of the monitoring device according to the present invention.

Next, the operation of the input/output control circuit of the above monitoring device will be explained in detail. The control information such as the address set stored in the first area 11 and the data stored in the second area 12 are in a one-to-one correspondence starting from the first address of each area. The n-th data of the second area 12 is input/output to the n-th control information of the area 11.

First, when data is output to a device to be monitored, a device address of the device, a combination of addresses, and a bit indicating data output are stored in one address of the first area 11. Data to be output is written in the second area 12. When data is input from a device to be monitored, the first area 11 contains the device address of the device and the address combination;
A bit indicating data input is stored, and the corresponding second area 12 is left empty. First and second area 11
．． Writing of data to 12 can be executed freely using microprograms and software, and input/output data can be transferred by starting - times without setting the data output and input channels separately. be. Therefore, by changing the contents of the first area 11, it is possible to flexibly respond to changes in the configuration of devices in the system.

The first and second address pointers 21 and 22 include
At startup, the starting addresses of the first and second areas 11 and 12 are set respectively, and the contents of the memo 1JIQ indicated by the address pointer 21 of the IEl are first
It is temporarily stored in the register 25 of. at the same time,
The decoding circuit 28 determines the direction of data transfer. When data is to be output, after storing the contents of the memory 10 indicated by the second address pointer 22 in the second register 26 as output data, the control circuit 20 transmits the entire interface converter 31 to the first register 25
requests the device specified by the device address set in to receive data. If the data is successfully received, the first and second address pointers 21 .
After the value of 22 is updated, the contents of the next first area 11 are read out.

When data is input, after decoding the control information from the first area 11, the interface conversion unit 3
Throughout the entire process, data output is requested to the device specified by the device address set in the first register 26.

After temporarily storing data from the designated device in the second register 26, the control circuit 20 writes the data to the address in the second area 12 indicated by the second address pointer 22. In this way, length counter 2
Data transfer between the memory 10 and the monitored device is repeated until the value of 7 becomes +11011.

As explained above, the input/output control circuit does not directly input various interfaces with devices that are read directly by the monitoring device.
The entire interface conversion unit 31 is converted to the internal standard interface of the btsutan monitoring device, and data transfer between the memo IJIQ and the memo IJIQ is automatically performed using control information prepared in advance without the need for a program intermediary. By implementing this method, it is possible to increase the versatility of the monitoring device, reduce the amount of hardware, and reduce the burden on software.

Although the present invention has been described in detail above, it is not limited to this embodiment and can be expanded as follows. That is, the control information given to the decoder 28 is expanded so that not only data from the first area 11 but also information from individual devices is generally given through the entire interface conversion section 31.

(Effects of the Invention) As explained above, the present invention converts the interface with the device connected to the monitoring device into a standard interface inside the monitoring device, and transfers data between the memory and the device in advance. By configuring the monitoring device to be controlled based on information provided on the memory, there are advantages in that the monitoring device can be made more versatile, the amount of hardware can be reduced, and the burden on software can be reduced.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing one embodiment of a monitoring device according to the present invention.

1...Monitoring device 2-4...Target device 10...
Memory 11, 12... Area 20... Control circuit 21, 22... Address pointer 23...
・First/last type flip-flop 24...Selector 25.26...Register 27...Length counter 28...Decode circuit 31...Interface converter 21 diagram

Claims (1)

[Claims] first and second areas formed on a memory; and selection means for selecting a unique device from a plurality of input/output devices in accordance with values sequentially output from the first area; control means for determining and controlling the direction of input and output of data transferred between a second area on the memory and the selected device, and each of the plurality of input/output devices. A monitoring device comprising: interface conversion means for converting different interfaces into one common interface.