JPH10240503A - Data processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bill management device capable of selecting and starting plural operating systems and eliminating the need of labor for maintenance work. SOLUTION: This data processor is provided with an external storage device 10 for storing the operating system, a CPU board 6 provided with a central processing unit 6a and a first storage part 6b for storing a BIOS(basic input/ output system) for executing the boot program of a connected extension board 7 at the time of activation and reading and executing the operating system stored in the external storage device 10 thereafter and the extension board 7 provided with a second storage part 7b for storing a system program for processing data and a third storage part 7a for storing the boot program for making the central processing unit execute the system program. In this case, a changeover switch part 7d interposed between the central processing unit 6a and the third storage part 7a for deciding the propriety of the execution of the boot program is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing apparatus such as a building management apparatus installed in a management room of a building management system for managing lighting, air conditioning, crime prevention and the like in a building and for inputting and outputting information.

[0002]

2. Description of the Related Art A conventional data processing apparatus will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of the data processing device.

Conventionally, in a building management device, which is a type of data processing device, a main control unit may be constructed by incorporating a general-purpose CPU board such as a PC / AT compatible CPU board.

In general, a PC / AT compatible CPU board has a central processing unit (hereinafter referred to as a CPU) and a BIOS (Bas) which is a control program depending on hardware.
ROM (Read Only Memory) storing icInput / Output System),
have. When the PC / AT compatible CPU board is started, the CPU executes a BIOS program to perform a self test for confirming the operation of the PC / AT compatible CPU board. Connected RAM (Random Access)
Memory) and the operation. And
PC / AT compatible CPU board is PC / AT compatible CPU
A BIOS mounted on an expansion board such as a video board connected to the board is executed to check the operation of the expansion board. After the various tests, the PC / AT compatible CPU board reads the operating system stored in the hard disk or the like into the RAM,
Start the operating system.

Next, a building management apparatus using the PC / AT compatible CPU board will be described.

In FIG. 2, a building management device is a PC / A
It has a T-compatible CPU board 1, an expansion board 2, a display unit 3, an input unit 4, and an external storage device 5.

[0007] The PC / AT compatible CPU board 1 is the same as that described above, and includes a CPU 1a and a ROM 1b storing a BIOS.

The extension board 2 is used by being connected to the PC / AT compatible CPU board 1, and stores a ROM 2a for storing a boot program, a system program for a building management system, a character font for display, and the like. And a RAM 2 for storing control settings and the like.
c. The boot program stored in the ROM 2a stores the program counter of the CPU 1a in the ROM
The system is changed to the start address where the system program for the building management system 2b is stored, and the system program for the building management system is executed. Therefore, PC / AT
The BIOS in the ROM 1b of the compatible CPU board 1 is not executed thereafter, and the operating system does not start.

The display unit 3 performs a display for building management, and displays, for example, a lighting state of each room in the building based on a system program for the building management system.

[0010] The input unit 4 instructs control of various control devices connected to the building management apparatus or an instruction of switching display contents of the display unit 3 based on a system program for the building management system. Is what you do.

The external storage device 5 is composed of a floppy disk drive, reads information written on the floppy disk, and
This is written as data such as control settings in M2c.

The building management apparatus configured as described above starts and operates as follows.

First, when the power is turned on, the PC / AT compatible C
The CPU 1a of the PU board 1 reads the BIOS in the ROM 1b, performs a self test, and executes a boot program in the ROM 2a of the extension board 2.

When the CPU 1a executes the boot program of the extension board 2, the CPU 1a stores a program counter in the ROM2.
The address is changed to the start address of the building management system system program b, and the execution of the building management system system program in the ROM 2b is started.

As described above, a system program for a building management system is started without starting a general operating system.

Since the system program for the building management system is stored in the ROM 2b, an external storage device such as a hard disk drive is not required for starting the main program. Therefore, the main program is not started from the hard disk drive, so that there is no start-up failure due to deterioration of the hard disk drive due to long-term use and no start-up failure due to vibration applied to the hard disk drive. Can be started.

It is also conceivable to start up a system program for a building management system from a floppy disk drive, but in the case of a floppy disk drive, the access speed is slow and a long time is required for starting up. On the other hand, if it is started from the ROM 2b, the start can be performed in a short time.

[0018]

However, in the above-described building management apparatus, since the medium storing the system program for the building management system is a ROM, a large capacity such as a hard disk is required. It cannot be stored, and it is difficult to store a plurality of operating systems and system programs in a ROM. Therefore, there is a problem that it is not possible to select and start up from a plurality of operating systems and system programs.

On the other hand, in the maintenance of the building management apparatus, the minimum maintenance program that can be stored in the limited memory capacity is only incorporated in the system program for the building management system. There was a problem that labor was required.

Specifically, kanji input is required to input or change room names such as "first conference room", "laboratory", and "yamashiro no ma" in a building to be managed. However, since the kana-kanji conversion system is not incorporated in the system program for the building management system described above, in order to input or change the kanji, a task of picking up a kanji code from a kanji list and inputting it. Had to do. Therefore, even if it is a kanji input operation that can be easily performed on a general operating system,
Labor is required on the system program for the building management system.

[0021] The present invention has been made to solve the above problems, and it is an object of the present invention that a plurality of operating systems can be selected and started, and that maintenance work requires labor. It is an object of the present invention to provide a building management device without the need.

[0022]

According to the present invention, in order to solve the above-mentioned problems, an external storage device for storing an operating system, a central processing unit, and a connection at the time of startup are provided. BI that executes a boot program of the expansion board that has been set, and then reads and executes an operating system stored in the external storage device.
A CPU board having a first storage unit for storing an OS, a second storage unit for storing a system program for performing data processing, and a third storage unit for storing a boot program for causing the central processing unit to execute the system program A storage unit, and an expansion board having a switch unit, which is interposed between the central processing unit and a third storage unit, and that determines whether to allow or disallow execution of a boot program. It is characterized by having been provided.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the data processing device.

In FIG. 1, the building management apparatus includes a PC / AT compatible CPU board 6 corresponding to a CUP board, an expansion board 7, a display unit 8, an input unit 9, and an external storage device 10. .

The PC / AT compatible CPU board 6 operates in the same manner as that described in the above-mentioned prior art, and includes a CPU 6a corresponding to a central processing unit and a BIOS.
And a ROM 6b corresponding to a first storage unit for storing the information.

That is, the CPU 6a operates the BIO of the ROM 6b.
S program to execute a self-test to confirm the operation of the PC / AT compatible CPU board itself.
RAM (Rand) connected to a T compatible CPU board
The capacity and operation of the expansion board 7 are checked, and if the expansion board 7 is connected, the boot program mounted on the expansion board 7 is executed.

Then, a PC / AT compatible CPU board 6
Reads the operating system stored in the external storage device 10 into the RAM if the extension board 7 is not connected, and starts the operating system.

The extension board 7 is used by being connected to the PC / AT compatible CPU board 7, and has a ROM 7a corresponding to a third storage unit for storing a boot program.
A ROM 7b corresponding to a second storage unit for storing a system program for a building management system corresponding to data processing, a character font for display, and the like; a RAM 7c for storing control settings and the like; Have.
The BIOS stored in the ROM 7a changes the program counter of the CPU 6a to the start address of the ROM 7a where the system program for the building management system is stored, and executes the system program for the building management system. Therefore, the ROM of the PC / AT compatible CPU board 6
The BIOS in 6b is not executed thereafter, and the operating system does not start.

The switch 7d is interposed between the CPU 6a and the ROM 7a to determine whether to execute the boot program stored in the ROM 7a. That is, when the contact of the changeover switch unit 7 is closed, the CPU 6a executes the boot program, and when the contact is opened, the CPU 6a does not execute the boot program. The opening and closing of the switch 7d is performed by a signal generated by operating a button (not shown), for example.

The display unit 8 performs a display for building management, and displays, for example, a lighting state of each room in the building based on a system program for the building management system.

The input unit 9 is for instructing control of various control devices connected to the building management apparatus or for switching the display contents of the display unit 10 based on a system program for the building management system. Is what you do.

The external storage device 10 is constituted by a floppy disk drive, reads information written on the floppy disk, and
This is written into the AM 7c as data such as control settings. Also, by inserting a medium on which the operating system is recorded at the time of startup, the operating system is read and executed by the BIOS.

The building management apparatus configured as described above starts and operates as follows.

First, a description will be given of the start-up in a state where the contact of the changeover switch section 7d is closed. PC / A when power is turned on
The CPU 6a of the T compatible CPU board 6
The IOS is read, a self-test and the like are performed, and then a boot program in the ROM 7a of the expansion board 7 connected via the changeover switch unit 7d is executed.

When the CPU 6a executes the boot program of the expansion board 7, the CPU 6a changes the program counter to the head address of the building management system system program in the ROM 7b according to the boot program program, and changes the program counter in the ROM 7b for the building management system. Start execution of the system program.

As described above, the general external storage device 1
The system program for the building management system is started without starting the operating system from 0.

Next, a description will be given of the start-up in a state where the contact of the changeover switch 7d is open. PC / AT when power is turned on
The CPU 6a of the compatible CPU board 6 is
The OS is read, a self test is performed, and then the changeover switch section 7d is open.
Without executing the boot program in M7a, BI
Execution of the contents of the OS is continued. That is, the CPU 6a
According to the contents of the IOS, the operating system stored in the external storage device 10 is read into the RAM, and the operating system is started.

Accordingly, when the contact of the changeover switch 7 is closed, the system program for the building management system is started. On the other hand, when the contact of the changeover switch 7 is open, the operating system The system starts.

Therefore, if a maintenance program for data of a system program for a building management system or a kana-kanji conversion program is installed in the operating system, maintenance can be easily performed.

In this embodiment, the ROM for storing the system program for the building management system is used.
However, a flash memory which can be rewritten in sector units and retains its contents even when the power is turned off may be used. In this case, it is possible to start up the operating system from the external storage device 10 and replace the system program for the building management system in the flash memory.

[0041]

Since the data processing device of the present invention is constructed as described above, in the invention according to the first aspect, the changeover switch unit is provided between the central processing unit and the third storage unit. To determine whether to allow the execution of the boot program, so when the contact of the changeover switch unit is closed,
A system program for the building management system can be started,
On the other hand, when the contact of the changeover switch unit is open, the operating system can be started from the external storage device,
Therefore, when a maintenance program of a data processing system program or a kana-kanji conversion program is incorporated in the operating system, a data processing device that is easy to maintain can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a data processing device of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional data processing device.

[Explanation of symbols]

 Reference Signs List 6 CPU board 6a Central processing unit 6b First storage unit 7 Expansion board 7a Third storage unit 7b Second storage unit 7d Changeover switch unit 10 External storage device

Claims (1)

[Claims] 1. An external storage device for storing an operating system, a central processing unit, and a BIOS for executing a boot program of an expansion board connected at the time of startup, and thereafter reading and executing the operating system stored in the external storage device A CPU board having a first storage unit for storing data, a second storage unit for storing a system program for performing data processing, and a third storage unit for storing a boot program for causing the central processing unit to execute the system program. An expansion board having a storage unit, wherein a changeover switch unit is provided between the central processing unit and the third storage unit to determine whether to execute the boot program. A data processing device, characterized in that: