JPH0420218B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention pertains) The present invention relates to a bus switching device for switching connection systems of buses connecting various devices arranged in each system in a multi-system computer system.

(Prior art and its problems) Figure 1 shows an example of a multi-system computer system.
An example of the configuration of a dual computer system equipped with two computers is shown, where CPU A and CPU B are
Each is a central processing unit (CPU) as a computer that controls the following various devices connected to main buses MB-A and MB-B. main bus
Branch bus BB for MB-A and MB-B
1 to BB6 are provided, and these branch buses BB1 to BB6 are provided.
BB6 is connected via the main bus MB-A or MB-B by bus connections 1A to 6A or 1B to 6B provided in the bus switch BS, respectively.
Connected to CPU A or CPU B.

Various devices installed in such a dual system computer system include, for example, branch buses BB1 to BB.
6 are connected to memory M1, memory M2, input/output device I/01, input/output device I/02, process input/output control device PI/01, and process input/output control device PI/02, respectively, and Processes to be controlled are connected to the input/output control devices PI/01 and PI/02, respectively.

In FIG. 1, a diagonally shaded bus connection section indicates that the bus connection section connects the corresponding main bus and branch bus.

Conventionally, bus switching processing in such a dual-system computer system has been performed using the following device for the bus switching device BS.

FIG. 2 shows an example of the configuration of a conventional operation panel CP through which an operator performs operations on the bus switch BS, where NP-A and NP-B represent the CPUs of CPU A and CPU B, respectively. Name plate, PBL
1A to PBL6A and PBL1B to PBL6B are
These pushbuttons are arranged corresponding to the CPU name plates NP-A and NP-B, respectively, and are associated with the various devices described above, and the bus connection can be switched in response to pressing the pushbuttons. Further, for example, each pushbutton has an indicator light that lights up depending on the connection state of the bus.

Figure 3 shows the flow of switching command signals generated by pressing pushbuttons PBL1A to PBL6A and PBL1B to PBL6B, and connection status signals generated by bus connections 1A to 6A and 1B to 6B in response to bus connections. show. Here, SW1A to SW6
A and L1A to L6A are push buttons, respectively.
Switches that close in response to pressing PBL1A to PBL6A and indicator lights that light up, SW1B to SW
6B and L1B to L6B are switches that are closed and indicator lights that are lit in response to pressing of the push buttons PBL1B to PBL6B, respectively. That is, pushbuttons PBL1A to PBL6A and PB1B
~In response to pressing PBL6B, switching command signal SS1
A to SS6A and SS1B to SS6B are added to the bus connections 1A to 6A and 1B to 6B, respectively, and the main bus and branch bus corresponding to the bus connections are connected. Bus connection part 1A to 6A
and 1B to 6B are connection state signals SC1A to SC6, respectively, depending on the specified connection state.
A and SC1B to SC6B as indicator lights L1A to L6
A and L1B to L6B to light up.

In this way, in the conventional device, the bus switch BS shown in the first figure is arranged for each CPU series as shown in the second figure, and is connected one-to-one with the bus connection parts 1A to 6A and 1B to 6B, respectively. Corresponding pushbutton
PBL1A to PBL6A and PBL1B to PBL6B
Therefore, the operator issues a bus switching command and monitors the bus connection status. However, in such conventional devices, when an operator investigates which CPU is connected to a certain process, or which I/O device or storage device is connected to a certain process, the operator first conducts the investigation. Recognize which CPU series the process, that is, the process input/output control device of that process, belongs to, and then press the name plate of the CPU of that series or the lit pushbutton of the I/O device or storage device. Need to investigate. Furthermore, in conventional equipment, if one of the CPUs fails, the process controlled by that CPU is transferred to another CPU.
Even when backing up with a CPU, although the operator may intuitively desire to switch the process to the CPU, in actual operation, the process is switched to the CPU instead.

In other words, when operating a multi-system computer system, an operator generally recognizes the system mainly in terms of processes, but with conventional bus switching devices, operations are required to be centered on the CPU. The operator was unable to operate the device intuitively, and there was a need to improve the operability of the device.

(Objective of the Invention) The present invention has been made in view of the above conventional problems, and it is possible to easily grasp the connection status of a CPU, storage device, and I/O device to a process, and furthermore, it is possible to easily grasp the connection status of a CPU, a storage device, and an I/O device to a process, and furthermore, to It is an object of the present invention to provide a bus switching device for a multi-system computer system that can easily perform processes.

In order to achieve the purpose of the invention, the present invention is multiple calculators CPUA, CPUB, and multiple bus MB -A, MB -B, and MB -B, MB -B,
..., a plurality of controlled objects P1, P2, ... and a plurality of devices M1, M2, which constitute a computer system,
A plurality of connection means 1A to 6 for selectively connecting I/01, I/02... to the plurality of buses, respectively.
A, 1B to 6B, . A bus switching command means for instructing the connection means, and a display means for displaying connection results based on a display command from the connection means that has received the connection command from the bus switching command means, for each of the plurality of control targets. operation panels arranged respectively, and destinations of commands sent from the bus switching command means corresponding to the plurality of devices to the plurality of connection means, and transmission of display commands sent from the plurality of connection means to the display means. The present invention is characterized by comprising: changing means for changing the destination in conjunction with the state of connection between the controlled object and the plurality of computers.

(Embodiments of the Invention) The present invention will be described in detail below with reference to the drawings.

FIG. 4 shows an example of the configuration of an operation panel CP1 related to a bus connection device in a dual computer system, as an example of a bus switching device for a multiple computer system according to the present invention. Here, NP1 and NP2 are the process name plates of processes P1 and P2, respectively, and in this example, the process name plate
Corresponding to NP1 and NP2, pushbuttons PBL11 to PLB61 and PLB61 each have an indicator light.
PBL12 to PBL62 correspond to each part shown in the first diagram as shown in the fourth diagram. Note that a shaded pushbutton in the figure indicates that the device and the corresponding process are in a connected state, and the indicator light of the pushbutton is lit. That is, in this case, each part is in the same connection state as in FIG.

FIG. 5 shows an example of the circuit configuration of the bus switching control section BC according to the present invention, which is disposed between the bus switching device shown in the first drawing and the operation panel shown in the fourth drawing. Here, inside the operation panel CP1, SW11 to
SW61 and L11 to L61 correspond to the process P1, respectively, and pushbuttons PBL11 to PBL
Switches that close in response to pressing of 61 and indicator lights that light up, SW12 to SW62 and L12
~L62 respectively correspond to process P2,
These are switches that are closed in response to pushbuttons PBL12 to PBL62 being pressed, and indicator lights that are lit.
Inside the bus switching control unit BC, Ry5A,
Ry5B, Ry6A and Ry6B are relays,
The contacts are closed depending on the connection state of the connection parts 5A, 5B, 6A and 6B, respectively.

Of the pushbutton group shown in Figure 4, CPU A and
Pushbuttons PBL11 and PBL2 compatible with CPU B
1. The switching command signals SS11, SS21, SS12 and SS22 generated by pressing PBL12 and PBL22 are guided to the bus connection parts 5A, 5B, 6A and 6B in the bus switch BS, respectively. On the other hand, the connection status signals SC5A, SC5B, SC6A and SC6B generated by the bus connections 5A, 5B, 6A and 6B are transmitted to the relays Ry5A and Ry5, respectively.
B, indicator light L1 via Ry6A and Ry6B
1, L21, L12 and L22.

Storage devices M1 and M2, I/0 device I/01
And among the pushbutton groups corresponding to I/02, pushbuttons PBL31 and PBL related to process P1
Switching command signals SS31, SS41, SS51 and
SS61 is led to bus connections 1A, 2A, 3A and 4A, respectively, via the contacts of relay Ry5A, and to bus connections 1B, 2B, 3B, and 4B, respectively, via the contacts of relay Ry5B.
lead to. On the other hand, the pushbutton associated with process P2
PBL32, PBL42, PBL52 and PBL62
Switching command signal SS32, SS generated by pressing
42, SS52 and SS62 are connected to bus connections 1A, 2A and 2A, respectively, through the contacts of relay Ry6A.
3A and 4A, and via the contacts of relay Ry6B, bus connections 1B, 2B, and
Leads to 3B and 4B.

In addition, bus connection parts 1A and 2 related to CPU A
Connection status signal SC generated by A, 3A and 4A
Relay 1A, SC2A, SC3A and SC4A
Via the contacts of Ry5A, the indicator light L3
1, L41, L51 and L61, and
They are led to indicator lights L32, L42, L52 and L62, respectively, through the contacts of relay Ry6A. Furthermore, the bus connection parts 1B, 2B,
Connection status signals SC1B, 3B and 4B are generated;
Relay Ry5B with SC2B, SC3B and SC4B
indicator lights L31 and L4, respectively, through the contacts of
1, lead to L51 and L61, and also relay Ry
Indicator lights L32 and L4 respectively through contacts 6B.
2, leading to L52 and L62.

According to this configuration, the process P1 or P2
Regardless of which main bus MB-A or MB-B is connected to, the switching command signal and connection state signal are guided to the normal destination. For example, when the connection display is as shown in the fourth diagram under the bus connection state shown in the first diagram, the operator wishes to use the I/0 device I/02 for the process P1 and When the pushbutton PBL61 associated with is pressed, the bus connection section 5A is connected at that time and the relay Ry5A is operating, so the connection switching signal SS61 is guided to the bus connection section 4A.
Then, the connection status signal SC4A is relay Ry
It is led to the indicator light L61 through the 5A contact, and the indicator light L61 lights up.

(Effects of the Invention) As described above, according to the present invention, a bus that changes the destination of the switching command signal and the destination of the connection state according to the connection state signal between the process and the CPU of the multi-system computer system. A switching control unit is provided, and the operation unit is configured to allow the operator to intuitively and accurately perform bus switching operations in accordance with each process, resulting in significantly improved operability compared to conventional equipment. A bus switching device for a multi-system computer system can be realized.

In the above embodiment, the bus switching control section is configured using a relay circuit, but it can also be configured by replacing it with a semiconductor circuit, for example, or by controlling a microprocessor according to a predetermined program. Of course.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a dual-system computer system as an example of a multiple-system computer system.
Fig. 2 is a diagram showing an example of the arrangement on a conventional operation panel for bus switching operations for the dual system computer system shown in Fig. 2 is a diagram illustrating the flow of signals between the operation panel shown in FIG. 4, and FIG.
FIG. 5 is a diagram showing an example of the arrangement of operation panels for bus switching operations for the dual system computer system shown in FIG. 1, and FIG. FIG. 3 is a circuit diagram illustrating a configuration example of a bus switching control section that controls the flow of signals to and from the illustrated operating section. A, B...CPU, M1, M2...Storage device,
I/01, I/02...I/0 equipment, P1, P2
...Process, PI/01, PI/02...Process input/output control device, MB-A, MB-B...Main bus, BB1 to BB6...Branch bus, 1A to 6
A, 1B to 6B...Bus connection section, BS...Bus switch, NP-A, NP-B...CPU name plate, PBL
1A, PBL6A, PBL1B~PBL6B...Push button, SW1A~SW6A, SW1B~SW6B...
...Switch, L1A~L6A, L1B~L6B...
...Indicator light, NP1, NP2...Process name plate,
PBL11~PBL61, PBL12~PBL62...
Push button, CP1...operation unit, BC...bus switching control unit, SW11 to SW61, SW12 to SW62...
...Switch, L11-L61, L12, L62...
...Indicator light, Ry5A, Ry5B, Ry6A, Ry6B
……relay.

Claims (1)

[Claims] 1. A plurality of computers CPUA, CPUB, ... and a plurality of buses MB-A, which are provided separately for the plurality of computers.
MB-B,... and multiple control objects P1, P2,...
and multiple devices M that make up the computer system.
1, M2, I/01, I/02... to the plurality of buses selectively.
A to 6A, 1B to 6B, . A bus switching command means for instructing a plurality of connection means, and a display means for displaying a connection result based on a display command from the connection means that has received a connection command from the bus switching command means, are connected to the plurality of control targets. operation panels arranged respectively for each of the plurality of devices, a destination of a command sent from the bus switching command means corresponding to the plurality of devices to the plurality of connection means, and a display sent from the plurality of connection means to the display means; A bus switching device for a multi-system computer system, comprising: changing means for changing a destination of a command in conjunction with a connection state between the controlled object and the plurality of computers.