JPH08335200A - Input / output control device and computer system device - Google Patents

Abstract

PURPOSE: To provide an input/output controller and a computer system device by means of which the function and state of input/output control can be easily and flexibly changed. CONSTITUTION: This input/output controller is provided with a ROM 13 storing the microprogram of a microprocessor 10, input/output control circuit 1 for connecting input/output devices 17 and 18 under the control of the microprocessor 10, dip switch 15 for setting an operation change mode concerning input/output control, flash EEPROM 12 having a program setting table 12a and a hardware setting table 12b, and monitor control part 14 for controlling the data reloading of respective tables due to a monitoring device 16 in the operation change mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input / output control device and a computer system device which have improved flexibility and operability in setting an input / output control operation.

[0002]

2. Description of the Related Art With the progress of microelectronics in recent years, various computer systems are widely used for plant control and office use. In this computer system, the system is constructed by a computer and its peripheral devices designed to support each field. Therefore, various input / output control devices for connecting the peripheral devices are connected to the system bus in the computer in a free combination, and the operation functions of these input / output control devices are fixed in advance. It is incorporated in the computer system.

In such a conventional computer system, a system test is performed after the system is constructed. In this case, the operation settings of the various input / output control devices are often changed for tuning. In that case, the ROM in which the setting contents are rewritten after the system is turned off and the ROM on the input / output control device are changed. It corresponds by exchanging and.

FIG. 8 is a block diagram showing a configuration of a conventional input / output control device 100. In the figure, 101 is a microprocessor, 102 is a ROM, and 103 is a monitor device 1.
A monitor control unit for connecting 13 and 104 and 105 are input / output control circuits. Input / output devices 111 and 112, which are peripheral devices such as disks and printers, can be connected to the input / output control circuits 104 and 105, respectively. Also, 121
Is a microprogram for the microprocessor 101 stored in the ROM 102, and the program setting table 1 is included in the microprogram 121.
21a and various tables such as the hardware setting table 121b are incorporated.

Next, the operation will be described with reference to FIG. First, the microprocessor 10 on the input / output control device 100
1 operates according to the microprogram 121 in the ROM 102. In particular, when the power is turned on, the setting values by the program setting table 121a and the hardware setting table 121b which are written in the ROM 102 in advance as one of the micro programs 121 are read. The microprocessor 101 recognizes the type of function to be operated and the operation method based on the read setting value, and the input / output control device 1
00 starts the operation. Further, when a failure or malfunction occurs, the state changes according to the contents previously written in the program setting table 121a. In this state, the operator tries to detect a failure location while looking at the monitor device 113 controlled by the monitor control unit 103.
Then, after identifying the faulty part or the defective part, if the setting change is necessary, the contents of the program setting table 121a or the hardware setting table 121b of the ROM 102 are rewritten, and the ROM of the rewritten contents is replaced. By doing so, it becomes possible to operate again.

As described above, when the setting of the input / output control device having the function corresponding to the required computer system is changed, the ROM whose contents are rewritten is replaced every time the setting is changed.

The change of the function and the state in the conventional input / output control device is performed by the ROM on each input / output control device as described above.
It is possible by rewriting and re-implementing.

[0008]

Since the conventional input / output control device is constructed as described above, it is necessary to adjust the hardware settings during the test under development or to connect the input / output control to the computer system. Even if the devices are the same, if it is necessary to change the setting value of the program on the input / output control device or the setting value of each hardware according to the system, RO
It is necessary to rewrite the contents of M each time, which requires labor and time, which causes a problem of lowering work efficiency.

Further, when changing the setting of the input / output control device according to each system, it is necessary to prepare in advance ROMs in which the contents corresponding to each system are written, which is economically advantageous. There was also the problem of being disadvantageous.

The present invention has been made to solve the above problems, and an input / output control device capable of easily and flexibly changing the function and state of input / output control without rewriting the contents of ROM. An object is to obtain a computer system device using the device.

[0011]

An input / output control device according to a first aspect of the present invention is a program setting table for determining an operation instruction for a micro program stored in a flash EEPROM according to an operation changing mode set by a DIP switch. Also, the hardware setting table for determining the operation / state of the input / output control circuit is rewritten from the monitor device connected to the monitor control unit.

An input / output control device according to a second aspect of the invention is
ROM storing a basic program for controlling the basic part of the microprocessor, a program setting table storing specific information for determining a program for input / output control, and a hardware setting table for determining the operation / state of the input / output control circuit And a flash EEPROM in which a program for each input / output device corresponding to the input / output device connected to the input / output control circuit is stored,
The configuration is such that the data stored in the flash EEPROM is rewritten from the monitor device connected to the monitor control unit by setting with the DIP switch.

The input / output control device according to the invention of claim 3 is
ROM storing a basic program for controlling the basic part of the microprocessor, a program setting table storing specific information for determining a program for input / output control, and a hardware setting table for determining the operation / state of the input / output control circuit And a flash EE in which a function-specific program for each interface function corresponding to the input / output device connected to the input / output control circuit is stored.
It has a PROM and is configured to rewrite the data stored in the flash EEPROM from a monitor device connected to the monitor control unit by setting with a DIP switch.

According to a fourth aspect of the present invention, there is provided a computer system device comprising a flash EEPROM storing a program setting table, a hardware setting table, and a program for each input / output device, and an input / output control device having a system bus control circuit. A system service processor, which monitors and controls the bus and rewrites data in the flash EEPROM, is connected via the system bus by the system bus control circuit,
From the system service processor to the flash E
It has a configuration for rewriting data in the EPROM.

According to a fifth aspect of the present invention, there is provided a computer system device comprising a flash EEPROM storing a program setting table, a hardware setting table, and a program for each input / output device, and an input / output control device including a system bus control circuit. The system bus control circuit is connected via the system bus to a system service processor that monitors and controls the bus and rewrites the program setting table or the hardware setting table or the input / output device-specific program in the flash EEPROM. , The system service processor to the flash EEP
The program setting table in the ROM, the hardware setting table, and the program for each input / output device are rewritten.

According to a sixth aspect of the present invention, there is provided a computer system device in which a flash E storing a program setting table, a hardware setting table, and a function-specific program is stored.
An input / output control device having an EPROM and a system bus control circuit is connected via the system bus control circuit to a system service processor that monitors and controls the system bus and rewrites data in the flash EEPROM. The service processor has a configuration for rewriting data in the flash EEPROM.

According to a seventh aspect of the present invention, there is provided a computer system device in which a flash E storing a program setting table, a hardware setting table, and a function-specific program is stored.
An input / output control device having an EPROM and a system bus control circuit is used to monitor and control the system bus and to store information stored in the program setting table or the hardware setting table in the flash EEPROM or by the function. Information about the program setting table and the hardware setting table in the flash EEPROM is connected from the system service processor to the system service processor that rewrites program data via the system bus control circuit.
The configuration is such that the program for each function is rewritten.

A computer system apparatus according to an eighth aspect of the present invention monitors the completion of the content change of the program setting table and the hardware setting table by the system service processor by the basic program stored in the ROM, and after the content change is completed. The configuration is such that the contents of the hardware setting table are set in the input / output control circuit, and the program for each input / output device according to the contents of the program setting table is executed.

A computer system apparatus according to a ninth aspect of the present invention monitors the completion of the content change of the program setting table and the hardware setting table by the system service processor by the basic program stored in the ROM, and after the content change is completed. A configuration is provided in which the contents of the hardware setting table are set in the input / output control circuit, and the function-based program according to the contents of the program setting table is executed.

[0020]

According to the first aspect of the invention, the input / output control device is R
The OM is equipped with a microprocessor microprogram, and various tables such as a program setting table for determining an operation instruction for input / output control for the microprogram and a hardware setting table for determining the operation / state of the input / output control circuit Is mounted on a flash EEPROM, and the micro program is changed by rewriting the program setting table and the hardware setting table from a monitor device connected to a monitor control unit in an operation changing mode set by a DIP switch. Without I / O control operation or I / O control circuit operation
Change the state freely.

An input / output control device according to a second aspect of the present invention is a program in which a basic program corresponding to a microprocessor is installed in a ROM, and specific information for specifying a program for each input / output device for input / output control is stored. Various tables such as a setting table and a hardware setting table that determines the operation / state of the input / output control circuit, and a program for each input / output device corresponding to the input / output device connected to the input / output control circuit are flashed.
Based on the operation change mode set in the PROM and set by the DIP switch, the information of the program setting table and the hardware setting table and the program for each input / output device are rewritten from the monitor device connected to the monitor control unit, and the basic I / O control programs and their contents and I / O control circuit operation / state can be freely changed for each I / O device without changing the program.

In the input / output control device according to the third aspect of the present invention, the basic program corresponding to the microprocessor is installed in the ROM, and the program setting table for storing the specific information for specifying the program for each function and the input / output control circuit. Various tables such as a hardware setting table that determines the operation / state, and a function-specific program for each interface function corresponding to the input / output device connected to the input / output control circuit are mounted on the flash EEPROM and set by the DIP switch. According to the operation change mode, the monitor device connected to the monitor control unit rewrites the information of the program setting table and the hardware setting table and the program for each function, and controls the input / output without changing the basic program. Program and its To freely change the operation and status of the contents and the input-output control circuit for each interface function.

According to a fourth aspect of the present invention, there is provided a computer system device in a flash EEPROM which stores a program setting table, a hardware setting table, and a program for each input / output device corresponding to an input / output device connected to the input / output control circuit. By the system bus control circuit that enables rewriting of data, the data in the flash EEPROM is rewritten from the system service processor connected through the system bus,
I / O control program and its contents and I / O control circuit operation without changing the basic program
Change the status freely for each input / output device.

According to a fifth aspect of the present invention, there is provided a computer system device in a flash EEPROM in which a program setting table, a hardware setting table and a program for each input / output device corresponding to an input / output device connected to the input / output control circuit are stored. A system bus control circuit that enables rewriting of data enables rewriting of data in the flash EEPROM from a system service processor connected via a system bus, and information of the program setting table and the hardware setting table. The input / output device program is rewritten to freely change the input / output control program and its contents and the operation / state of the input / output control circuit for each input / output device without changing the basic program.

According to a sixth aspect of the present invention, there is provided a computer system device in which a flash EEPROM storing a program setting table, a hardware setting table, and input / output devices connected to the input / output control circuit, and a function-specific program for each interface function. By the system bus control circuit that enables rewriting of the data in
The data in the flash EEPROM is rewritten from the system service processor connected via the system bus, and the input / output control program and its contents and the operation / state of the input / output control circuit are input without changing the basic program. Change freely for each output device.

According to a seventh aspect of the present invention, there is provided a computer system device in which a flash EEPROM storing a program setting table, a hardware setting table, and input / output devices connected to the input / output control circuit, and a function-specific program for each interface function. By the system bus control circuit that enables rewriting of the data in
A program for input / output control without changing the basic program by rewriting the program setting table, the hardware setting table, and the function-specific program in the flash EEPROM from a system service processor connected via a system bus. And its contents and the operation / state of the input / output control circuit can be freely changed for each interface function.

According to the eighth aspect of the present invention, the microprocessor executes the basic program stored in the ROM, monitors the completion of the content change of the program setting table and the hardware setting table by the system service processor, and completes the content change. After that, the contents of the hardware setting table are set in the input / output control circuit to set the operation and state of the input / output control circuit, and the programs for each input / output device according to the contents of the program setting table are executed. , I / O control programs and their contents, and the operation / state of the I / O control circuit are freely changed for each I / O device.

According to a ninth aspect of the present invention, the microprocessor executes the basic program stored in the ROM, monitors the completion of the content change of the program setting table and the hardware setting table by the system service processor, and completes the content change. After that, the contents of the hardware setting table are set in the input / output control circuit to set the operation and state of the input / output control circuit, and the function-based program according to the contents of the program setting table is executed to input the data. The output control program and its contents, and the operation / state of the input / output control circuit can be freely changed for each interface function.

[0029]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a block diagram showing an internal configuration of an input / output control device 1 according to a first embodiment of the present invention. In the figure, 10 is a microprocessor of the input / output control device 1 and 1
Input / output control circuits 1a and 11b, flash EE 12
PROM, 13 is a ROM, 14 is a monitor controller, and 15 is a DIP switch. The ROM 13 has a microprogram 13 for controlling the input / output of the input / output control device 1.
a is stored. Reference numeral 12a is a program setting table showing operation instructions to the microprogram 13a for controlling the input / output of the input / output control device 1. Reference numeral 12b is a hardware setting table necessary for the operation of the input / output control circuits 11a and 11b. Program setting table 12a
For example, debug print, presence / absence of operation trace collection, etc. are set in order to confirm the operation of the microprogram during debugging of the input / output control device 1. In the hardware setting table 12b, for example, parameters necessary for interrupt control from the input / output control circuit, local memory capacity, number of retries in bus control, timeout time, etc. are set. The monitor control unit 14 uses the program setting table 12 a of the flash EEPROM 12 and the hardware setting table 1 from outside the input / output control device 1.
2b is read and written, and the monitor device 16 that performs the operation of executing the microprogram 13a is controlled.

The dip switch 15 is a flash EE.
When the contents of the PROM 12 are invalid and the input / output control device 1 becomes inoperable, the input / output control device 1 is instructed and set to operate based on the minimum necessary information of the microprogram 13a. Reference numerals 17 and 18 denote input / output devices controlled by the input / output control device 1, and are connected to the input / output control circuits 11a and 11b in a one-to-one manner or in a one-to-many manner.

Next, the operation will be described. First, the input / output control device 1 is operated according to an instruction by the setting of the DIP switch 15 to shift to an operation rewriting mode in which the minimum necessary information of the microprogram 13a is operated, and the monitor device 16 rewrites the table data of the flash EEPROM 12. I do. In the input / output control device 1, after resetting, the microprocessor 10 executes the microprogram 13a in the ROM 13. The microprocessor 10 executes the microprogram 13a to execute the flash EEPRO to operate the input / output control circuit.
The contents of the hardware setting table 12b are read from M12, and the contents are set in the registers of the input / output control circuits 11a and 11b to operate. Microprocessor 10
The flash EEPROM 12 then follows the microprogram 13a to determine its own operation.
Read the contents of the program setting table 12a from
Perform corresponding I / O control.

When the microprocessor 10 reads the table contents from the flash EEPROM 12 according to the microprogram 13a, for example, a checksum of the table data is attached to the table to detect the illegality of the table contents, and the illegality is detected. Further, when the I / O control device 1 becomes inoperable due to the setting of the illegal data without detecting the illegality, the flash EEPROM is instructed by the setting of the DIP switch 15 described above.
The contents of 12 are changed from the monitor device 16.

As described above, the flash EEPROM 1
2 is provided with various tables, and by rewriting these various tables from the monitor device 16 in the operation rewriting mode, it is possible to easily change the operation of the hardware or the microprogram without changing the hardware or the microprogram. Obviously, this can be done and the function and state of the I / O controller can be changed easily and flexibly.

Embodiment 2 FIG. 2 is a block diagram showing the internal configuration of the input / output control device 21 according to the second embodiment of the present invention. In the figure, parts that are the same as or equivalent to those in FIG. Reference numerals 12c and 12d are input / output device-specific programs corresponding to the input / output devices 17 and 18 connected to the input / output control circuits 11a and 11b, and 13b is a basic program that defines control of a basic portion of the microprocessor 10. Flash EEPR
In the OM 12, various table information such as the program setting table 12a and the hardware setting table 12b,
Among the microprograms stored in the ROM 13 in the first embodiment, the input / output device-specific programs 12c and 12d depending on the input / output control circuits 11a and 11b are stored. The ROM13 includes the input / output control circuits 11a and 11b.
The basic program 13b that does not depend on is stored. Further, in the program setting table 12a, the storage addresses and the number of programs for each input / output device are set.

Next, the operation will be described. First, by the operation described in the first embodiment, the program 12 for each input / output device is transferred from the monitor device 16 to the program setting table 12a.
Set the storage addresses of c and 12d and their numbers. In the input / output control device 21, after reset, the microprocessor 10
The basic program 13b is executed by. The microprocessor 10 follows the basic program 13b to operate the input / output control circuits 11a and 11b from the flash EEPROM 12 to the hardware setting table 12b.
The contents of are read out, and the contents are set in the registers of the respective input / output control circuits to operate. Microprocessor 10
Then reads the contents of the program setting table 12a from the flash EEPROM 12. At this time, the microprocessor 10 uses the basic program 13b to recognize the number of I / O device-specific programs stored this time and their addresses, and executes the I / O device-specific programs according to the contents of the program setting table 12a. I / O control is performed for each corresponding I / O device according to a program for each I / O device.

As described above, by dividing the microprogram into the basic program and the program for each input / output device, even if the input / output control circuit is changed according to the connected input / output device, the program for each input / output device is changed. By changing the program setting table, the function and state of the input / output control device can be easily and flexibly changed.

Example 3. 3 is a block diagram showing the internal structure of the input / output control device 31 according to the third embodiment of the present invention. In the figure, parts that are the same as or equivalent to those in FIG. 12e and 12f are input / output devices 33 connected to the input / output control circuit 32,
34 is a function-specific program for each interface function corresponding to 34, respectively. For example, when the input / output devices 33 and 34 are hard disks, 12e is a SCSI-compatible function-specific program, and 12f is a SASI-compatible function-specific program. Depends on the interface function according to the output device. Furthermore, the program setting table 12a
The storage addresses and the numbers of the function-specific programs 12e and 12f are set in.

Next, the operation will be described. First, the program setting table 1 is operated by the operation described in the second embodiment.
2a is provided with storage addresses of the function-specific programs 12e and 12f and flags corresponding thereto, and the corresponding flags of the function-specific programs corresponding to the input / output devices 33 and 34 to be controlled by the input / output control device 31 this time are set. After the input / output control device 31 is reset, the basic program 13b is executed by the microprocessor 10. The basic program 13b reads the content of the hardware setting table 12b from the flash EEPROM 12 to operate the input / output control circuit 32, sets the content in the register of the input / output control circuit 32, and operates it. The microprocessor 10 follows the basic program 13b, and then reads the program setting table 1 from the flash EEPROM 12.
Read the contents of 2a. At this time, the microprocessor 10 recognizes the function-based program to be used for the input / output device to be controlled this time and the address thereof according to the basic program 13b, and executes the recognized function-based program.

As described above, by dividing the microprogram into the basic program and the function-specific program, even when the input / output device is changed, it can be dealt with by changing the function-specific program and the program setting table. It is possible to easily and flexibly change the function and state of the input / output control device for the input / output device.

Example 4. FIG. 4 is a block diagram showing the internal structure of the input / output control device 41 according to the fourth embodiment of the present invention. In the figure, parts that are the same as or correspond to those in FIG. 2 are assigned the same reference numerals and explanations thereof are omitted. Reference numeral 44 is a system service processor connected to the input / output control device 41 via the system bus 43, and 42 is a system bus control circuit. A content change waiting flag indicating that the content change of the program setting table 12a is completed is added to the program setting table 12a. The ROM 13 stores the basic program 13b shown in the second embodiment. In this case, the basic program 13b starts the execution of the content change waiting flag of the program setting table 12a,
It has been modified to monitor. The system bus control circuit 42 controls the system bus 43,
It is a circuit that enables reading and writing of the flash EEPROM 12 from the system service processor 44 connected to the.

Next, the operation will be described. After resetting, the input / output control device 41 causes the microprocessor 10 to execute the basic program 13b. At this time, the microprocessor 10 monitors the content change wait flag of the program setting table 12a according to the basic program 13b until the completion of the change is indicated. The system service processor 44 receives the hardware information corresponding to the input / output devices 17, 18 connected this time via the system bus 43, the input / output device-specific programs 12c,
12d is shown in the program setting table 12a and the hardware setting table 12b. After that, the content change wait flag of the program setting table 12a is set to completion of change.
When the microprocessor 10 monitoring the content change wait flag recognizes that the content change wait flag indicates the completion of the change, the microprocessor 10 thereafter performs the operation described in the second embodiment.

As described above, the program setting table 1
2a and the hardware setting table 12b can be changed from the system service processor 44, and the operation of the input / output control device can be changed regardless of the initialization of the input / output control device 41.

Example 5. FIG. 5 is a block diagram showing the internal configuration of the input / output control device 51 according to the fifth embodiment of the present invention. In the figure, parts that are the same as or equivalent to those in FIG.

45 is a CP connected to the system bus 43
U. In the input / output control device 51, the basic program 13b is executed by the microprocessor 10 after reset. At this time, the microprocessor 10 sets the program setting table 12a according to the basic program 13b.
The content change wait flag is used to monitor whether the content change has been completed.

The system service processor 44 receives the input / output control circuits 11a and 11b via the system bus 43.
The hardware information corresponding to, and the input / output device-specific programs 12c and 12d to be used are shown in the program setting table 12a and the hardware setting table 12b. The system service processor 44 also executes a program for each input / output device corresponding to the input / output control circuits 11a and 11b via the system bus control circuit 42 to the flash EEP.
Write to ROM12. After that, the content change wait flag of the program setting table 12a is set to completion of change.

The basic program 13b, which monitors the content change wait flag, thereafter performs the operation described in the second embodiment by the content change wait flag indicating that the change is completed.

As described above, when a plurality of input / output control devices are present, the program for each input / output device can be changed without writing from the monitor device for each input / output control device,
In addition, the system service processor 4 changes the program setting table 12a and the hardware setting table 12b.
4, the operation of the input / output control device can be changed regardless of the initialization of the input / output control device 51.

Example 6. In this embodiment, the program for each input / output device in the fourth embodiment is changed to a program for each function, and the flash EEPROM 12 has an input / output device 33 connected to an input / output control circuit 32 as shown in FIG. , 34 respectively corresponding to the interface functions corresponding to the interface functions, and a program setting table 12a and a hardware setting table 12b in which the storage addresses and the numbers of the function-specific programs 12e and 12f are set.

In this way, the program setting table 12
a and the hardware setting table 12b are changed from the system service processor 44, and the input / output control unit 61
It is possible to change the program for each function regardless of the initialization of, and it is possible to flexibly cope with the case where input / output devices having different interfaces are connected to the input / output control circuit 32.

Example 7. In this embodiment, the program for each input / output device in the fifth embodiment is changed to a program for each function, and the flash EEPROM 12 has an input / output device 33 connected to an input / output control circuit 32 as shown in FIG. , 34 respectively corresponding to the interface functions corresponding to the interface functions, and a program setting table 12a and a hardware setting table 12b in which the storage addresses and the numbers of the function-specific programs 12e and 12f are set.

In this way, the program setting table 12
a and the hardware setting table 12b can be changed from the system service processor 44.
The system service processor 44 uses the input / output control circuit 3
The function-specific programs corresponding to the input / output devices 33 and 34 connected to the memory 2 are written in the flash EEPROM 12 via the system bus control circuit 42.

When there are a plurality of input / output control devices, the function-specific program can be changed for each input / output control device without writing from the monitor device, and the program setting table 12a and the hardware setting table 12b can be changed. This can be performed from the system service processor 44, and the program for each function and its contents are changed regardless of the initialization of the input / output control device 71, and the input / output devices 33, 34 connected to the input / output control circuit 32 are changed. Input / output control can be performed by the function-based program, and even when input / output devices having different interfaces are connected to the input / output control circuit 32, the input / output devices can be flexibly handled.

[0053]

As described above, according to the first aspect of the invention, the information for determining the program for the input / output control of the program setting table stored in the flash EEPROM, and the input / output control circuit of the hardware setting table. Since it is configured such that the information that determines the operation / state of the can be rewritten from the monitor device in the operation change mode set by the DIP switch, without rewriting the contents of the microprogram,
There is an effect that an input / output control device capable of easily and flexibly changing the input / output control operation and the function and state of the input / output control is obtained.

According to the invention of claim 2, the flash EE
A program setting table that stores specific information for specifying the I / O device-specific program stored in the PROM, and information that determines the operation / state of the I / O control circuit in the hardware setting table are set by the DIP switch. In the operation change mode, since it is configured to allow rewriting from the monitor device,
There is an effect that an input / output control device that can easily and flexibly change the input / output control operation and the input / output control function and state for each input / output device is obtained.

According to the third aspect of the invention, the function-specific program for each interface function corresponding to the input / output device connected to the input / output control circuit and the specific information for specifying the function-specific program are stored. A program setting table and a hardware setting table storing information for determining the operation / state of the input / output control circuit are stored in the flash EEPROM, and the data stored in the flash EEPROM in the operation change mode set by the DIP switch. Since it is configured to be rewritable from the monitor device, it is possible to easily and flexibly change the input / output control operation and the function and state of the input / output control for each interface function according to the input / output device. There is an effect that can be obtained.

According to the invention of claim 4, the flash EE
Rewriting the program setting table stored in the PROM, which stores information that determines the input / output device-specific program for input / output control, and the hardware setting table that stores information that determines the operation / state of the input / output control circuit, Since the system service processor is configured to enable it via the system bus control circuit, it is possible to obtain a computer system capable of easily and flexibly changing the input / output control operation and the function and state of the input / output control device for each input / output device. effective.

According to the invention of claim 5, the flash EE
A program setting table stored in the PROM, which stores information that determines a program for each input / output device for input / output control, and a hardware setting table that stores information that determines the operation / state of the input / output control circuit, and the input / output device Since the rewriting of another program is configured to be possible from the system service processor or the like via the system bus control circuit, the change of the program content for the input / output control device can be managed by a single change source,
Further, the change time can be shortened, and there is an effect that a computer system capable of easily and flexibly changing the program operation for input / output control of each input / output device in each input / output control device and the function and state of the input / output control device is obtained. .

According to the invention of claim 6, the flash EE
Rewriting of the program setting table stored in the PROM, which stores information for determining the function-specific program, and the hardware setting table, which stores information for determining the operation / state of the input / output control circuit, is performed via the system bus control circuit. Since it is configured to enable from the system service processor, the input / output control operation and the function of the input / output control device for each interface function according to the input / output device connected to the input / output control circuit of each input / output control device There is an effect that a computer system that can change the state easily and flexibly is obtained.

According to the invention of claim 7, the flash EE
A program setting table that stores information that determines a function-specific program stored in a PROM, a hardware setting table that stores information that determines the operation / state of the input / output control circuit, and the rewriting of the function-specific program Since the system service processor is configured to enable it via the control circuit, changes in the program contents for the I / O control unit can be managed by a single change source, and the change time can be shortened. A computer system capable of easily and flexibly changing the program operation for input / output control for each interface function according to the input / output device connected to the input / output control circuit in the device and the function and state of each input / output control device effective.

According to the present invention, the basic program stored in the ROM monitors the completion of the contents change of the program setting table and the hardware setting table by the system service processor, and the hardware is changed after the contents change is completed. Since the contents of the setting table are set in the input / output control circuit and the program for each input / output device according to the contents of the program setting table is executed, when the contents are changed, the initial setting will start up the system. The computer system can easily and flexibly change the program operation for input / output control of each input / output device in the input / output control device and the function and status of the input / output control device regardless of the time or reset. It is effective.

According to the ninth aspect of the invention, the completion of the content change of the program setting table and the hardware setting table by the system service processor is monitored by the basic program stored in the ROM, and the hardware setting is completed after the content change is completed. Since the contents of the table are set in the input / output control circuit and the function-specific programs according to the contents of the program setting table are executed, the initial settings will be reset when the system is started or reset when the contents are changed. It is performed regardless of the time, and the program operation for the input / output control for each interface function according to the input / output device connected to the input / output control circuit and the function and state of the input / output control device can be easily and flexibly performed. There is an effect that a computer system that can be changed can be obtained.

[Brief description of drawings]

FIG. 1 is a block configuration diagram showing a configuration of an input / output control device according to a first embodiment of the present invention.

FIG. 2 is a block configuration diagram showing a configuration of an input / output control device according to a second embodiment of the present invention.

FIG. 3 is a block configuration diagram showing a configuration of an input / output control device according to a third embodiment of the present invention.

FIG. 4 is a block configuration diagram showing a configuration of a computer system device according to a fourth embodiment of the present invention.

FIG. 5 is a block configuration diagram showing a configuration of a computer system device according to a fifth embodiment of the present invention.

FIG. 6 is a block configuration diagram showing a configuration of a computer system device according to a sixth embodiment of the present invention.

FIG. 7 is a block configuration diagram showing a configuration of a computer system device according to a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a conventional input / output control device.

[Explanation of symbols]

1, 21, 31, 41, 51, 61, 71 Input / output control device, 10 microprocessors, 11a, 11b, 3
2 I / O control circuit, 12 flash EEPROM,
12a program setting table, 12b hardware setting table, 12c, 12d input / output device-specific programs, 12e, 12f function-specific programs, 13
ROM, 13a micro program, 13b basic program, 14 monitor control unit, 15 DIP switch, 16 monitor device, 17, 18, 33, 34 input / output device, 42 system bus control circuit, 43 system bus, 44 system service processor.

Claims (9)

[Claims] 1. A microprocessor that performs predetermined arithmetic operations and control, a ROM that stores a microprogram of the microprocessor, and an input / output control circuit that is controlled by the microprocessor and that connects an input / output device. A program for input / output control, a DIP switch for setting an operation change mode for changing the operation / state of the input / output control circuit, and a program setting storing information for determining an operation instruction for the microprogram for input / output control Flash EEPRO having a table and a hardware setting table storing information for determining the operation / state of the input / output control circuit
M and the flash EE from the monitor device in the operation change mode set by the dip switch.
An input / output control device including a monitor control unit that controls rewriting of data stored in a PROM. 2. A basic program for controlling a basic part of the microprocessor is stored in the ROM, and an input / output device corresponding to an input / output device connected to the input / output control circuit is stored in the flash EEPROM. The input / output control device according to claim 1, wherein another program is stored, and the information stored in the program setting table is identification information for identifying the input / output device-specific program. 3. The ROM stores a basic program for controlling a basic part of the microprocessor, and the flash EEPROM has an interface function corresponding to an input / output device connected to the input / output control circuit. 2. The input / output control device according to claim 1, wherein a program for each function is stored, and the information stored in the program setting table is identification information for identifying the program for each function. 4. A microprocessor for performing a predetermined calculation and control, a ROM storing a basic program for controlling a basic part of the microprocessor, an input / output control circuit for connecting peripheral devices, and an input / output. Corresponds to a program setting table that stores information that determines a control program, a hardware setting table that stores information that determines the operation / state of the input / output control circuit, and an input / output device connected to the input / output control circuit Flash E that stores a program for each input / output device
The flash E that controls the EPROM and the system bus
An input / output control device having a system bus control circuit capable of rewriting data in the EPROM, and a system service connected to the input / output control device for monitoring and controlling the system bus and rewriting data in the flash EEPROM A computer system unit including a processor. 5. The rewritable flash EEPR
5. The computer system apparatus according to claim 4, wherein the data in the OM is information stored in the program setting table or the hardware setting table and the program for each input / output device. 6. A microprocessor for performing a predetermined calculation and control, a ROM storing a basic program for controlling a basic part of the microprocessor, an input / output control circuit for connecting peripheral devices, and an input / output. A program setting table that stores information that determines a control program, a hardware setting table that stores information that determines the operation / state of the input / output control circuit, and an input / output device connected to the input / output control circuit, respectively. An input / output control device having a flash EEPROM storing a function-specific program for each corresponding interface function and a system bus control circuit for controlling a system bus and enabling rewriting of data in the flash EEPROM, and the input / output control Connected to the device to monitor and control the system bus The flash EEPR
A computer system device including a system service processor that rewrites data in the OM. 7. The rewritable flash EEPR
7. The computer system apparatus according to claim 6, wherein the data in the OM is information stored in the program setting table or the hardware setting table and the function-based program. 8. The microprocessor is the ROM
Monitoring the completion of the content change of the program setting table and the hardware setting table by the system service processor by the basic program stored in the, and after the completion of the content change, the contents of the hardware setting table to the input / output control circuit. 6. The computer system apparatus according to claim 5, wherein the program is set and an input / output device-specific program is executed according to the contents of the program setting table. 9. The microprocessor is the ROM
Monitoring the completion of the content change of the program setting table and the hardware setting table by the system service processor by the basic program stored in the, and after the completion of the content change, the contents of the hardware setting table to the input / output control circuit. 8. The computer system apparatus according to claim 7, wherein the program is set and a function-based program according to the contents of the program setting table is executed.