JPH11312096A - Electric circuit card testing device and method therefor and storage medium for recording control program of its testing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric circuit card testing device for confirming the normality of an electric circuit card in a relatively short time. SOLUTION: The defective content of a control card 10 is recorded in a defective content recording part 1, and the result of the full function test of a test program 20 is recorded in an error content recording part 2. When the corrected control card 10 is integrated into a system, a test selecting part 3 analyzes the defective content recorded in the defective content recording part 1 and the error content recording part 2, and selects only a necessary testing function from the test program 20 based on the analyzed result. Then, the test of the control card 10 is operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric circuit card test apparatus, a test method, and a recording medium on which a program for executing the test method is recorded. For example, in order to repair a failure of a control card) and to incorporate the electric circuit card into the system after the completion of the repair, a test apparatus and a test method of a hot-swap electric circuit card for performing insertion / extraction while the system power is on and The present invention relates to a recording medium on which a program for executing a test method is recorded.

[0002]

2. Description of the Related Art Conventionally, a test of an electric circuit card at the time of hot-swap is performed by starting a test program prepared in advance,
The normality of the electric circuit card was determined from the result of executing the test program.

An example of this type of test apparatus is disclosed in (1) Japanese Patent Application Laid-Open No. 5-165669, and (2) Japanese Patent Application Laid-Open
-244563 and (3) JP-A-8-15304
No. 8 (hereinafter referred to as prior arts 1, 2, and 3, respectively).

In prior art 1, when a hot-swap package is inserted into an apparatus, a test program stored in a magnetic disk is loaded, and the hot-swap package is tested according to the test program. .

In prior art 2, when a failure occurs in a disk in the disk array device, the hot-swap device ejects the failed disk out of the system, and when a new disk is set, the disk confirmation device is activated. It checks whether it is appropriate.

In the prior art 3, when the insertion detection unit detects the insertion of the replacement memory card, the hot-swap controller copies the data to the replacement memory card, and the data comparison unit copies the copied data with the copy source. And compare the data.

[0007]

However, in these prior arts 1 to 3, the same multifunctional test was performed on any test object regardless of the type of failure in order to sufficiently perform the functional test. There was a drawback that the test required a lot of time.

Accordingly, an object of the present invention is to record an electric circuit card test apparatus, a test method, and a program for executing the test method, which can confirm the normality of the electric circuit card in a shorter time than before. It is to provide a recording medium.

[0009]

According to a first aspect of the present invention, there is provided an electric circuit card testing apparatus for testing an electric circuit card which can be inserted into and removed from a device constituting a computer system. The circuit card testing apparatus is configured to analyze a failure content of the electric circuit card, a failure content analysis unit, a test program storage unit in which a test program of the electrical circuit card is stored, and the failure content analysis unit. Test execution means for selecting only necessary test functions from the test program stored in the test program storage means and testing the electric circuit card after repair.

A second aspect of the present invention is an electric circuit card test method for testing an electric circuit card which can be inserted into and removed from an apparatus constituting a computer system. First to analyze
And a second process of selecting only necessary test functions from a test program based on the analysis result of the first process and testing the electric circuit card after repair.

A third invention is a recording medium recording a control program for executing an electric circuit card test method for testing an electric circuit card which can be inserted into and removed from a device constituting a computer system, and the recording medium. A first process of analyzing the failure content of the electric circuit card, and a test of the electric circuit card after repair by selecting only necessary test functions from a test program based on an analysis result in the first process. A control program for executing the two processes is recorded.

According to the first to third aspects of the present invention, the failure content of the electric circuit card is analyzed, and only the necessary test function is selected from the test program based on the analysis result to test the electric circuit card. This makes it possible to eliminate a complicated test, and to confirm the normality of the electric circuit card in a shorter time than before.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, the first embodiment will be described. FIG. 1 is a configuration diagram of a first embodiment of an electric circuit card test apparatus according to the present invention.

An electric circuit card test apparatus includes a failure content recording unit 1 for recording the content of a failure of a control card 10 when a failure occurs in an electric circuit card, for example, a control card 10 in a computer system, Card 1
An error content recording unit 2 for recording the error content when the test program 20 is executed for 0, and a test selection for selecting a test for installing and executing the repaired control card 10 in the system based on the recorded content. Unit 3 and control card 10
Built-in detection unit 4 that detects that the system has been built into the system
A test program storage unit 5 in which a test program 20 is stored; a test start unit 6 for starting the test program 20 when the control card 10 is installed in the system; And a control card identification unit 7 for identifying whether or not it has been mounted.

Next, the operation will be described in detail. FIG.
Is a flowchart showing the operation when a failure occurs in the electric circuit card, and FIGS. 3 and 4 are flowcharts showing the operation after the repair of the electric circuit card is completed.

The operation described below is performed by an unillustrated CPU (Central Processing Unit) of the computer system, which is a program 30 for controlling an electric circuit card test apparatus prepared in advance.
Control according to

The operation of the present invention is divided into two parts: the time when a failure occurs and the operation after the repair is completed. First, the operation when a failure occurs will be described.

Referring to FIG. 2, if a control card 10 in a computer system, for example, a control card for a magnetic disk, or a communication control card between computer systems fails for some reason, a CPU (not shown) tests the electric circuit card. An abnormality of the control card 10 is detected according to the device control program 30 (S1).

When an abnormality of the control card 10 is detected, the content of the failure is recorded by the failure content recording unit 1 (S2). Normally, the details of the failure are recorded on a storage device such as a fixed disk in a file format managed by the operating system.

When a failure is detected in the control card 10, it is necessary to repair the failed control card 10. Before the repair, the test card stored in the test program storage 5 for the failed control card 10 is repaired. The program 20 is executed (S3), and the result is recorded in the error content recording unit 2. This error record is stored in the form of a file on a storage device such as a fixed disk in the same manner as the above-described failure content (S
4). The operation at the time of occurrence of a failure is thus completed.

It should be noted that, after the recording of the failure contents (S2), the execution (S3) of the test program 20 and the recording of the result in the error contents recording section (S4) are performed.
After S4, S2 may be performed.

The test program 20 in S3 may be executed by an operator.

The test program 20 includes the control card 1
In order to identify the 0 fault location, all the functions of the control card 10 to be tested are created to be tested in detail.
The test is designed to take a relatively long time to execute.

When the test program 20 is started by an operator's operation, all tests included in the test program 20 are executed in order to isolate the location of a failure.

However, as will be described later, the test program 20 is configured so that a test function can be selectively executed.
It is possible to select a test partially when launching the test.

When the failure state of the failed control card 10 is found, the control card 10 is pulled out of the computer system and the control card 10 is repaired.

Next, the operation after the repair of the control card 10 is completed will be described. Referring to FIG. 3, first, control card 10 whose repair is completed is mounted on the original computer system (S11).

When the repaired control card 10 is mounted on a computer system, an interrupt occurs (S1).
2) In response to the interruption, the installation of the control card 10 is recognized by the installation detecting unit 4 (S13).

When the installation of the control card 10 is recognized,
The test program 20 is started by the test starting unit 6 (S14).

"Activation of the test program 20" means to store the test program 20 in, for example, a memory (not shown) so that the test program 20 can be executed.

Next, referring to FIG. 4, the built-in detecting section 4
The control card identification unit 7 is started (S15).

The control card identification section 7 refers to the serial number of the embedded control card 10 and identifies whether the embedded control card 10 is the same as the card previously mounted in the system, and tests and selects a test selection section. 3 (S1)
6).

The test selecting section 300 refers to the notification from the control card identifying section 7 and, when the same control card 10 as the control card 10 previously mounted in the system is installed, the test program 20 And select and execute only the tests necessary for confirmation after repair.

Then, the test result is displayed on an output device such as a display (S18).

The test contents are selected based on the contents recorded by the failure content recording unit 1 and the error content recording unit 2.

The test selected here is the control card 10
All the tests (S
3), the test which failed because the control card 10 failed (recorded in the error content recording unit 2) and the content recorded in the failure content recording unit 1 were analyzed. This is a test related to the function determined to be

On the other hand, as a result of the notification from the control card identification unit 7, if it is determined that the card 11 different from the card 10 previously mounted in the system is mounted, the normal test program 20 (for example, A function test is performed (S21).

Then, the test result is displayed on an output device such as a display (S22). This completes the operation after the completion of the repair.

Although the control card 10 is identified (S15) after the test program is started (S14), S14 may be executed after S15.

Next, a second embodiment will be described. FIG. 5 is a configuration diagram of the second embodiment. The same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

The second embodiment relates to a recording medium in which a program 30 for controlling the electric circuit card test apparatus described above is recorded.

A recording medium driving device including this recording medium includes:
A CPU 13 of the computer system, a memory 14,
It comprises an input device 15, an output device 16, a recording medium 17, the above-described failure content recording unit 1, an error content recording unit 2, a test program storage unit 5, and a control card 10.

In the recording medium 17, S1 to S4 (see FIG. 2), S11 to S18 and S21 and S22 (see FIG.
4) is recorded on the computer 30 for causing the computer (CPU 13) to execute the process of FIG.

Now, when the program 30 recorded on the recording medium 17 is read by the CPU 13,
13 writes the read program 30 into the memory 14. This completes the loading of the program 30.

Next, according to a command from the input device 15, the CP
The U13 reads the program 30 from the memory 14, and executes the above-described processes S1 to S4 (see FIG. 2), S11 to S18, and S21 and S22 (see FIGS. 3 and 4) according to the program 30. The results of the test are displayed on the output device 16.

Next, an example of the first embodiment of the present invention will be described.

[0047]

FIG. 6 is an overall block diagram of a computer system in which a control card 10 is incorporated.

Referring to FIG. 2, the computer system includes a CPU 42 and a control card 10 connected to a system bus 41, and a disk device 45 connected to the control card 10.

The control card 10 includes an interface register 46 of a system port 1133 present on the system bus 41 and a RAM (Ran
It comprises a read / write unit 47 for reading / writing (read / write) of a dom access memory, and a data read / write unit 48 for reading / writing data to / from the disk device 45.

FIG. 7 is a configuration diagram of the test program 20. The test program 20 is configured to correspond to the control card 10 to be tested.

That is, referring to FIG.
Are an interface register test 51 for testing the interface register 46, a RAM read / write test 52 for testing the RAM, a data read / write test 53 for testing the data read / write unit 48, Consists of

Next, an example of a message recorded in the failure content recording unit 1 will be described. 8 to 11 are diagrams showing an example of a message recorded in the failure content recording unit 1.

FIG. 8 is a diagram showing an example of a message 61 indicating that a timeout has occurred at the system port 1133.

FIG. 9 shows an example of a message 62 indicating that reading of the interface register 46 has failed.

FIG. 10 is a view showing an example of a message 63 indicating that a parity error has occurred in accessing the internal RAM.

FIG. 11 is a diagram showing an example of a message 64 indicating that a parity error has occurred by accessing the disk device 45.

Next, an example of a message recorded in the error content recording section 2 will be described. 12 to 14 are diagrams showing an example of a message recorded in the error content recording unit 2.

FIG. 12 is a diagram showing an example of a message 71 indicating the test result of test 1 (interface register test 51).

This indicates that the error address is C1 and the expected value is FF, but the test result is FE and different from the expected value.

FIG. 13 shows an example of a message 72 indicating the test result of test 2 (RAM read / write test 52).

This indicates that although the error address is D2 and the expected value is F2, the test result is F1 and is different from the expected value.

FIG. 14 shows an example of a message 73 indicating the test result of test 3 (data read / write test 53).

This indicates that the error address is E1 and the expected value is F5, but the test result is F6, which is different from the expected value.

Next, the specific contents of the test of the control card 10 will be described.

First, a description will be given with reference to a flowchart (FIG. 2) when a failure occurs. Referring to FIG. 2, control card 1
When an abnormality of 0 is detected (S1), the content is recorded in the failure content recording unit 1 (S2).

At this time, any one of the messages 61 to 64 shown in FIGS. 8 to 11 is recorded in the failure content recording unit 1.

Next, the test program 20 sets the test selection unit 3
(S3). At this stage, all of the test programs 20 (all of the tests 1 to 3) are executed.

The result of the test is stored in the error content recording unit 2
Will be recorded. At this time, any of the messages 71 to 73 is recorded in the error content recording unit 2. Here, it should be noted that the information of the messages 71 to 73 recorded in the error content recording unit 2 is more specific than the messages 61 to 64 recorded in the failure content recording unit 1.

This is because the messages 71 to 73 recorded in the error content recording unit 2 indicate specific numerical values of the test results.

Next, a flowchart at the time of repair completion (FIG. 3)
And FIG. 4). First, the case where the control card 10 is a repaired control card will be described.

First, the repaired control card 10 is mounted on the system (S11). Then, an interrupt occurs (S12), and when the installation of the control card 10 is detected by the installation detection unit 4 (S13), the installation detection unit 4 starts the test program 20 (S14).

Next, the built-in detector 4 identifies the control card 10. Since the control card 10 is the control card after the repair is completed, that is, the control card that has been previously mounted (S16), the test selecting unit 3 selects the test program 20 (S17).

Next, what test program 20 is selected by the test selecting section 3 will be described.

First, the message 61 is stored in the failure content recording unit 1.
Will be described, and the message 71 is recorded in the error content recording unit 2.

When the message 61 is recorded in the failure content recording section 1, the interface register 46 of the control card 10, the RAM read / write section 47 and the data read / write
This indicates that any one of the light units 48 has failed, but it is not possible to determine which of them has failed.

On the other hand, the message 7 is stored in the error content recording unit 2.
If 1 is recorded, the interface register 46
Has an error.

At this time, although there is a high possibility that the interface register 46 has an error, the test selecting section 3 records all the tests (test 1 to test 1) of the test program 20 because the message 61 is recorded in the failure content recording section 1. 3) is selected and tested (S17).

Then, the test result is displayed on the output device 16 (S18).

On the other hand, the message 61
Is recorded, and the same processing is performed when the message 72 or 73 is recorded in the error content recording unit 2.

That is, when the message 72 is recorded, it indicates that there is an error in the read / write unit 47. When the message 73 is recorded, it is indicated that there is an error in the data read / write unit 48. As shown, all the tests of the test program 20 are executed just in case.

Next, the message 62 is stored in the failure content recording unit 1.
Will be described, and the message 71 is recorded in the error content recording unit 2.

In this case, the test selecting section 3 determines that the interface register 46 has failed, and selects and tests the interface register test 51.

Then, the test result is displayed on the output device 16 (S18).

Next, the message 63 is stored in the failure content recording unit 1.
Will be described, and the message 72 is recorded in the error content recording unit 2.

In this case, the test selecting unit 3 sets the RAM read /
The write unit 47 determines that a failure has occurred, and the RAM read / write
Test 52 is selected and tested.

Then, the test result is displayed on the output device 16 (S18).

Next, a message 64 is stored in the failure content recording unit 1.
Is recorded, and the message 73 is recorded in the error content recording unit 2.

In this case, the test selecting unit 3 sets the data read /
The write unit 48 determines that a failure has occurred, and the data read / write
Test 53 is selected and tested.

Then, the test result is displayed on the output device 16 (S18).

On the other hand, other combinations of the messages 62 to 64 and the messages 71 to 73 are also conceivable.

If such a combination occurs, it is necessary for the operator to determine which test should be executed from the contents of the combination, or to execute all of the tests 1 to 3 of the test program 20. Conceivable.

Next, returning to step S16 (see FIG. 4), a case where the control card 10 is not a repaired control card will be described.

At this time, the test selecting section 3 executes all of the test programs 20 (all of the tests 1 to 3) (S2
1).

Then, the test result is displayed on the output device 16 (S22).

[0095]

According to the first aspect of the present invention, there is provided an electric circuit card tester for testing an electric circuit card which can be inserted into and removed from a device constituting a computer system, and the electric circuit card tester is connected to the electric circuit card Failure content analysis means for analyzing the details of the failure, a test program storage means for storing a test program for the electric circuit card, and a test stored in the test program storage means based on the analysis result of the failure content analysis means. A test execution means for selecting only a necessary test function from the program and testing the electric circuit card after repair; analyzing the failure content of the electric circuit card; The test of the electric circuit card is performed by selecting only the necessary test functions, so that unnecessary tests can be eliminated. Relatively short time can perform electrical circuit card testing device to confirm the normality of the card is obtained.

According to a second aspect of the present invention, there is provided an electric circuit card test method for testing an electric circuit card which can be inserted into and removed from a device constituting a computer system. A first process for analyzing the contents, and a second process for selecting only necessary test functions from a test program based on the analysis result of the first process and testing the electric circuit card after repair. Therefore, an electric circuit card test method having the same effects as the first invention can be obtained.

According to the third aspect of the present invention, there is provided a recording medium storing a control program for causing an apparatus constituting a computer system to execute an electric circuit card test method for testing an electric circuit card which can be inserted and removed. A first process of analyzing a recording medium for a failure content of the electric circuit card;
It is composed of a recording medium storing a program for executing only a necessary test function from a test program based on an analysis result in the first process and performing a second process for testing the electric circuit card after repair. Therefore, a recording medium having the same effects as the first invention can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of an electric circuit card test apparatus according to the present invention.

FIG. 2 is a flowchart illustrating an operation when a failure occurs in an electric circuit card.

FIG. 3 is a flowchart showing an operation after repair of the electric circuit card is completed.

FIG. 4 is a flowchart showing an operation after repair of the electric circuit card is completed.

FIG. 5 is a configuration diagram of a second embodiment.

FIG. 6 is an overall configuration diagram of a computer system into which a control card is incorporated.

FIG. 7 is a configuration diagram of a test program.

FIG. 8 is a diagram showing an example of a message 61 indicating that a timeout has occurred at system port 1133;

FIG. 9 is a diagram showing an example of a message 62 indicating that reading of the interface register 46 has failed.

FIG. 10 is a diagram showing an example of a message 63 indicating that a parity error has occurred in accessing the internal RAM.

FIG. 11 is a diagram showing an example of a message 64 indicating that a parity error has occurred during access to the disk device 45.

FIG. 12 is a diagram showing an example of a message 71 indicating a test result of test 1 (interface register test 51).

FIG. 13 shows test 2 (RAM read / write test 5).
It is a figure showing an example of message 72 showing the test result of 2).

FIG. 14 shows test 3 (data read / write test 5).
It is a figure showing an example of message 73 showing the test result of 3).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Failure content recording part 2 Error content recording part 3 Test selection part 4 Built-in detection part 5 Test program storage part 6 Test starting part 7 Control card identification part 10 Control card 13 CPU 14 Memory 15 Input device 16 Output device 17 Recording medium 20 Test program 30 Device control program 46 Interface register 47 Read / write unit 48 Data read / write unit

Claims (27)

[Claims] 1. An electric circuit card test apparatus for testing an electric circuit card which can be inserted into and removed from an apparatus constituting a computer system, comprising: a failure content analyzing means for analyzing a failure content of the electric circuit card; A test program storing means storing a test program of the card, and selecting only necessary test functions from a test program stored in the test program storing means based on an analysis result by the failure content analyzing means, and performing the repair after the repair. An electric circuit card test apparatus, comprising: a test execution unit for testing an electric circuit card. 2. The test execution means further includes identification means for identifying an electric circuit card incorporated in the computer system, and the identification means has revealed that the electric circuit card is the repaired electric circuit card. If
2. The electric circuit card test apparatus according to claim 1, wherein the electric circuit card is tested by selecting only necessary test functions from the test program. 3. The test execution means further includes identification means for identifying an electric circuit card incorporated in the computer system, and the identification means makes the electric circuit card different from the repaired electric circuit card. 2. The electric circuit card test apparatus according to claim 1, wherein when the test is determined, all test functions of the test program are tested. 4. The electric circuit card test apparatus according to claim 2, wherein said identification means identifies said electric circuit card by a serial number recorded on said electric circuit card. 5. The failure content analysis means comprises a failure content recording unit for recording the content of a failure, and an error content recording unit for recording a result of testing the electric circuit card by the test program. An electric circuit card test apparatus according to claim 1. 6. The electric circuit card test apparatus according to claim 5, wherein a result of testing all test functions of the test program is recorded in the error content recording section. 7. The electric circuit card includes an interface unit for mediating transmission and reception of input data, a read / write unit for reading / writing an internal memory, and a data transmission / reception unit for transmitting / receiving data to / from an external terminal. The electric circuit card test apparatus according to any one of claims 1 to 6, wherein: 8. The test program for the electric circuit card includes a first test for testing the interface unit, a second test for testing the read / write unit, and a third test for testing the data transmission / reception unit. The electric circuit card test apparatus according to claim 7, comprising: 9. The electric circuit card test apparatus according to claim 1, wherein the electric circuit card is an active insertion / extraction card that can be inserted / extracted while a power supply of the computer system is turned on. 10. An electric circuit card test method for testing an electric circuit card that can be inserted into and removed from a device constituting a computer system, comprising: a first process for analyzing a failure content of the electric circuit card;
A second process of selecting only necessary test functions from a test program based on the analysis result of the first process and testing the repaired electric circuit card. 11. The second processing is a third processing for identifying an electric circuit card incorporated in the computer system, and the third processing has revealed that the electric circuit card is the electric circuit card after the repair. 11. The electric circuit card test method according to claim 10, further comprising: a fourth process of selecting only necessary test functions from the test program and testing the electric circuit card. 12. The second processing is a third processing for identifying an electric circuit card incorporated in the computer system, and the electric circuit card is different from the repaired electric circuit card by the third processing. If the test is found, a fifth test for testing all test functions of the test program is performed.
11. The method for testing an electric circuit card according to claim 10, comprising a process. 13. The electric circuit card test method according to claim 11, wherein the third processing identifies the electric circuit card by a serial number recorded on the electric circuit card. 14. The method according to claim 10, wherein the first processing includes a sixth processing for recording a failure content and a seventh processing for recording a result of testing the electric circuit card by the test program. 14. The method for testing an electric circuit card according to any one of claims 13 to 13. 15. The electric circuit card test method according to claim 14, wherein a result of testing all test functions of the test program is recorded in the seventh processing. 16. The electric circuit card according to claim 1, further comprising: an interface unit for mediating transmission / reception of input data, a read / write unit for reading / writing an internal memory, and a data transmission / reception unit for transmitting / receiving data to / from an external terminal. The electric circuit card test method according to any one of claims 10 to 15, wherein: 17. The test program for the electric circuit card, wherein a first test for testing the interface unit, a second test for testing the read / write unit, and a third test for testing the data transmission / reception unit. 17. The electric circuit card test method according to claim 16, comprising: 18. The electric circuit card test method according to claim 10, wherein the electric circuit card is an active insertion / removal card that can be inserted / extracted while the power of the computer system is on. 19. A recording medium storing a control program for executing an electric circuit card test method for testing an electric circuit card which can be inserted into and removed from a device constituting a computer system, wherein a failure content of the electric circuit card is recorded. A first process for analyzing
A control program for executing only a necessary test function from a test program based on an analysis result in the first process and performing a second process for testing the electric circuit card after repair is recorded. Recording medium. 20. The second processing for identifying an electric circuit card incorporated in the computer system, and the third processing has revealed that the electric circuit card is the electric circuit card after the repair. 20. The recording medium according to claim 19, further comprising: a fourth process of selecting only necessary test functions from the test program and testing the electric circuit card. 21. The second process for identifying an electric circuit card incorporated in the computer system, and the electric circuit card is different from the repaired electric circuit card by the third process. If the test is found, a fifth test for testing all test functions of the test program is performed.
20. The recording medium according to claim 19, comprising processing. 22. The recording medium according to claim 20, wherein the third processing identifies the electric circuit card by a serial number recorded on the electric circuit card. 23. The apparatus according to claim 19, wherein the first processing includes a sixth processing for recording a failure content and a seventh processing for recording a result of testing the electric circuit card by the test program. 23. The recording medium according to any one of to 22. 24. The recording medium according to claim 23, wherein a result of testing all test functions of said test program is recorded in said seventh processing. 25. The electric circuit card, comprising: an interface unit for mediating transmission / reception of input data; a read / write unit for reading / writing an internal memory; and a data transmission / reception unit for transmitting / receiving data to / from an external terminal. The recording medium according to any one of claims 19 to 24, wherein: 26. A test program for testing the electric circuit card, wherein a first test for testing the interface unit, a second test for testing the read / write unit, and a third test for testing the data transmitting / receiving unit. 26. The recording medium according to claim 25, comprising: 27. The recording medium according to claim 19, wherein the electric circuit card is an active insertion / extraction card that can be inserted / extracted while the power of the computer system is on.