JP2827702B2 - Computer system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system such as a portable workstation and a personal computer.

[0002]

2. Description of the Related Art In recent years, with the spread of computer systems such as portable workstations and personal computers, the portability of computer systems has been improved. Accordingly, a computer system having a function of turning off the power before moving the system and immediately restoring the previous system state when the power is turned on (turned on) again has been realized. . By using this function, the user can quickly continue working in the previous system state.

In addition, peripheral devices such as a secondary storage device, a printer, a modem, and a network interface device can be connected to such a computer system, and by connecting the modem and the network interface device, the computer system can be connected to the modem. It has a function of communicating with another computer system via a public telephone line or a network connected to a network interface device.

In this case, in a case where the system state is restored when the power is turned off and then turned on again, the configuration of the peripheral device before the power is turned off or the configuration of the network connected to the peripheral device is changed. May be changed later.

[0005] As a method of restarting the system when the configuration of the peripheral device or the network is changed as described above, a method disclosed in Japanese Patent Application No. 2-230355 is known. According to the technique disclosed in this publication, information indicating the configuration of a peripheral device before power-off is stored as a previous state in a specific location inside the system, and after power-on, the previous state (the configuration of the previous peripheral device) is saved. ) Is compared with information indicating the current configuration of the peripheral device, and necessary initialization is performed based on the comparison result.

As another method, there is a method in which recovery of the system state is abandoned and the system is newly initialized by a normal boot method.

[0007]

However, in the apparatus disclosed in the above publication, the configuration information indicating the configuration of the peripheral device must be stored in special hardware such as a CMOS memory device for storing the configuration information. In addition, the memory resources could not be used effectively.

Further, the configuration indicating the configuration of the peripheral device immediately before the power is turned off is compared with the configuration of the current peripheral device after the power is turned on, and the configuration data indicating the configuration of the peripheral device is initialized according to the comparison result. Therefore, after the power is turned on, the storage contents of the CMOS memory device are always accessed, and the configuration of the previous peripheral device and the current configuration (state) of the current peripheral device are accessed for all the stored contents. Must be executed (match or not), and the initialization process cannot be performed quickly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a computer system capable of greatly shortening a system start-up time by rapidly performing a peripheral device including a communication device.

[0010]

The invention according to claim 1 is
A computer system having an interface unit for performing a connection process with a predetermined communication network, wherein the interface unit is configured to physically connect the information on the predetermined communication network with the predetermined communication network. Detecting means for determining whether the interface means is logically connectable to the predetermined communication network based on the information, and determining when the power is turned on again by the determining means. A computer system, comprising: initialization means for initializing a network environment of the computer system including the interface means using an initialization routine according to a state.

According to a second aspect of the present invention, in the first aspect of the present invention, the determining means logically connects to the predetermined communication network based on whether or not a connection is sequentially performed from a network performing high-speed communication. It is characterized in that it is determined whether or not is possible.

According to a third aspect of the present invention, in the first aspect of the present invention, there is further provided a notifying means for notifying a user of a logical connection state with the predetermined communication network determined by the determining means. Features.

[0013]

According to the invention of claim 1 of the present application, the discriminating means detects information on the predetermined communication network while being physically connected to the predetermined communication network connected to the interface means, and detects the information. Initially, the interface means determines whether or not a logical connection with a predetermined communication network is possible, and the initialization means determines an initial state according to the state determined by the determination means when power is turned on again. A network environment of the computer system including the interface means is initialized by using a conversion routine, whereby a logically connectable communication network environment can be initialized efficiently and properly.

Further, according to the invention of claim 5 of the present application, the contents stored in the storage means immediately before the power is turned off can be restored when the power is turned on again, and the logical connection determined by the determination means can be restored. The network environment of a possible communication network is also initialized each time, so that the network environment that may have an environmental change between immediately before the power is turned off and when the power is turned on is reset every time the power is turned on again. Since the stored contents that do not change between immediately before the power is turned off and when the power is turned on are initialized by the stored contents, efficient and proper initialization can always be performed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment and a second embodiment of the present invention will be described below with reference to the accompanying drawings.

First, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block diagram showing a first embodiment of a computer system according to the present invention.

In FIG. 1, a computer system 1
A keyboard 10 for giving a restart command, a display 20, a memory 30 for performing the function of the above-mentioned main storage means, a floppy disk 40, a hard disk 50 for performing the function of the above-mentioned storage means, and a A LAN board 60 performing a function, an RS232C interface 70 as a serial interface, and a central processing unit (hereinafter referred to as a CPU) 80
Are connected to the system bus 90. A network 100 such as Ethernet is connected to the LAN board 60 via a network interface device (not shown) which is a communication device, and a modem 110 and a printer 120 which are communication devices are connected to the RS232C interface 70. As a result, it is possible to communicate with an external network through the LAN board 60 and the RS232C interface 70, as is well known.
Normally, one of these communication means is used.

The memory 30 stores data indicating the internal state of the system (hereinafter referred to as system state), for example, network routing information, processes, data, file systems, and the like.

As shown in FIG. 2, the hard disk 50 includes a system file 210 loaded into the memory 30 at the time of normal system startup, and a temporary system including only necessary minimum processing used at the time of restart. A file 220 is stored, and a system state file 230 is further stored. System state file 23
0 is a file storing a memory image of the memory 30 immediately before the power is turned off. After the power is turned on again, the system state immediately before the power is turned off can be recovered by reading the system state file 230 into the memory 30 again.

After the system status is recovered in this way, the configuration of the peripheral device including the communication device and the configuration of the network (Ethernet or public line) connected to the communication device (network interface device or modem) as the peripheral device change. Therefore, the data remaining in the memory 30 is reinitialized by judging the current state of the peripheral devices and the state of the network connection. As a result, it is possible to avoid unnecessary initialization and a situation in which access is performed and control does not return for a long time even when there is no connection to the network.

In this embodiment, the above-described state storage processing means, state recovery means, and initialization means are software (program) for executing the functions of the respective means.
Is executed by the CPU 80.

The re-initialization processing of the computer system having such a configuration will be described with reference to FIGS.

FIG. 3 shows a processing procedure of a state storage processing process corresponding to a program for performing the function of the state storage processing means, and FIG. 4 corresponds to a program for performing the function of the initialization means. FIG. 5 shows a procedure of an initialization process, and FIG. 5 shows a procedure of a state recovery process corresponding to a program for performing the function of the state recovery means. The CPU 80 executes the re-initialization processing according to those processing procedures.

First, as shown in FIG. 3, when a command for restart processing is given from the user, the state storage processing process prohibits the writing of the application process (step 301).

In this embodiment, since the contents of the memory 30 are stored in a nonvolatile storage device such as a file, the contents of the memory 30 are stored on a general multi-process operating system. This is because other processes must update some data in the memory 30 or prohibit writing to the hard disk 50 while writing to the hard disk 50.

More specifically, the state storage processing process has a higher priority than all the application processes and is lower than the system input / output processing, or generates another process having the same priority. There is a way to simply continue the empty loop. As a result, the processing of the application process can be stopped, and the original processing can be safely continued.

When step 301 is completed, the status storage process creates a system status file for storing the system status on the hard disk 50 (step 302).

This system status file has a size obtained by adding the size of the header to the size of the memory 30 of the system. The header includes a logical volume (Volume) in which the system state file 230 is placed.
The date and time when the file was last opened for writing must be written. This header information is stored in the system state file 23 in the hard disk 50 when the system state file 230 is read into the memory 30 later.
It is used to check that no inconsistency occurs between the contents of 0 and the copy of the file system on the memory 30. This is because the old system state file is incorrectly
In order to prevent the file from being restored to the current system state.

When step 302 is completed, the status storage process opens the temporary system file 220 in the hard disk 50 (step 303).
The physical position of the temporary system file 220 is checked, and the temporary system file 220 is used as a system startup file at power-on as a physical volume (Vo).
write (step 304). Note that this system startup file contains not only physical volumes but also EPRs.
The data may be written in a boot address area such as OM.

Next, the status storing process is executed by the CPU 8
The status word (register) of 0 is stored in the system area in the memory 30 (step 305), and then the memory image of the memory 30 is written in the system state file in the hard disk 50 (step 306). (Step 30)
7).

Step 306 is an I / O operation for writing the entire contents of the current memory 30 to the temporary system file 220 generated in step 303. In this embodiment, this I / O operation is performed by the microcontroller of the CPU 80. It is implemented as code, and it is guaranteed that the state of the memory 30 does not change during the I / O operation. Of course, there is no need to implement in microcode,
Any method may be used as long as the I / O operation can be performed without changing the contents of the memory 30 by using additional hardware or a dedicated buffer.

In the processing of steps 305 and 306, one procedure is called. This procedure returns “TRUE” as a return value (return value) to the state storage processing process when the memory image of the memory 30 is successfully written to the specified file. When the contents of the memory 30 and the state word of the CPU 80 are restored after the power is turned on again, "FALSE" is returned to the state storage processing process as a return value.

After such a return value is returned to the state storage processing process, control is transferred immediately after the procedure is called. In order to perform such an operation, the return address stored in the stack immediately after the procedure call is stored in the memory 30 as the program counter of the CPU 80, and then the return address is loaded into the program counter of the CPU 80. To do.

When the status storage process returns "TRUE" in step 307, it notifies the user that the power may be turned off, and then stops the system (Halt) (step 307). 308), and the process ends. On the other hand, when "FALSE" is returned, it is determined that the power is turned on again and the previous system state is restored (the processing after the power is turned on will be described later), and the peripheral device is re-initialized. (Step 309).

Next, the processing procedure of the initialization process for reinitializing the peripheral device will be described with reference to the flowchart of FIG.

The re-initialization process is performed before and after the power is turned off and after the power is turned on again.
This is the re-initialization of the peripheral device in the case where the configuration of the network connected to the communication device has changed.

First, as shown in FIG. 4, the initialization process permits writing of a stopped application process (step 401). Specifically, the other processes (processes generated by the status storage process) that have continued the empty loop are deleted. As a result, the process of the application process having a relatively lower priority is restarted.

When step 401 is completed, the initialization process invalidates (ie, re-initializes) the routing table of the network stored in the memory 30 (step 402). because,
This is because the contents of the routing table in the system at this time relate to the network configuration before the power is turned off, and it is highly likely that the information is meaningless at this time.

When step 402 is completed, the initialization process starts receiving an Ethernet (Ethernet) packet (step 403), and determines the connection state of the Ethernet based on the content of the received packet (step 404). If Ethernet is connected to a network interface device (not shown) connected to the LAN board 60, the process is terminated. If not, the connection state of the RS232C interface 70 is checked (step 405).

In step 405, if the modem 110 is not connected to the RS232C interface 70, the process is terminated. If the modem 110 is connected, the modem 110 is reinitialized (step 4).
06) Then, preparations are made for connection to a public line connected to the modem 110.

Thus, the operation can be quickly resumed without the user being aware of the change in the configuration of the peripheral device including the network configuration.

Next, the processing procedure of the state recovery process for recovering the system state immediately after the power is turned on again will be described.
This will be described with reference to the flowchart of FIG.

First, the temporary system file 220 is read by an IPL (Initial Program Loader) executed by the microcode of the CPU 80. next,
The state recovery process executes the minimum necessary processing included in the read temporary system file 220.

That is, the state recovery process executes a minimum necessary system initialization sequence such as initialization of the hard disk 50 and initialization of the core of the operating system (step 501), and then examines the system state file 230. (Step 502).

In the process of step 502, the logical volume in which the system state file 230 is placed is opened for reading only, and in step 306 of FIG. 3, the existence of the system state file 230 in which the memory contents are written is confirmed. The header of the status file 230 is read to determine whether the date when the logical volume of the hard disk 50 was last opened for writing matches the date written in the header of the system status file 230.

When step 502 is completed, the state recovery process determines whether the file is in a good condition (whether the dates match) (step 503). Note that the processing from step 501 to step 503 is the minimum necessary processing included in the temporary system file 220 read by the IPL (Initial Program Loader) by the state recovery process.

In step 503, if the dates do not match, the restart is abandoned and the normal boot sequence is executed (step 504). If the dates match, the system status file 230 is deleted from the hard disk 50. Read into memory 30 (step 50
5) Further, in step 305 of FIG.
The state word of the CPU 80 stored in the system area of
The data is loaded into the register of the PU 80 (step 506).

After step 506, the process proceeds to step 307 in FIG. At this time, in step 307 of FIG.
ALSE ", and the peripheral device is re-initialized.

In the above embodiment, a message generating means for notifying the user of the current configuration of the peripheral device or the network based on the result of the reinitialization processing of the peripheral device may be further provided. Also in this case, the message generating means is realized by the CPU 80 executing software (program) for performing the function of this means. A message generated by the message generating means, for example, a message such as "Ethernet is connected" or "Public line is connected" is displayed on the display 20.

As described above, according to the first embodiment, when the current internal state of the system is saved, and after the system is turned off, the system state before the power is turned off is restored. The necessary re-initialization is performed for the dynamic change of the peripheral device including the above, the restart time of the system is shortened irrespective of the change of the configuration of the peripheral device, and the user can continue the work quickly.

Next, a second embodiment of the present invention will be described with reference to FIGS.

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

In the figure, the computer system is:
Keyboard and mouse device 610 and display device 620
, A memory 630, a floppy disk device 640,
Fixed disk device 650 and Ethernet device 660
, A communication modem device 670 and a CPU 680 are connected to a system bus 690.

In this embodiment, the above-mentioned state detecting means and configuration data initializing means execute software (program) for executing the functions of the respective means by the CPU 6.
80 is implemented.

FIG. 7 shows computer systems 710 and 7
20 is connected to the Ethernet 730, and the computer system 720 is transmitting packets to the Ethernet 730.

In this embodiment, the initialization of the computer system is controlled, the configuration of the communication device is determined, and the dialog with the user is detected by detecting the packet transmitted on the Ethernet which is read at the time of system startup. Instead, appropriate changes are made.

More specifically, when the system is started, a packet transmitted on the Ethernet is read in order to initialize data for managing the Ethernet connection state of the system. This processing is executed by a main initialization sequence of the system, and specifically, is executed by a packet detection routine executed during this sequence. This packet detection routine is executed at the time of reading a packet, and checks whether or not a packet transmitted by anyone other than itself is transmitted to the Ethernet to detect the presence or absence of an Ethernet connection,
This detection result is notified to the main initialization sequence of the system. The main initialization sequence of the system calls a corresponding subroutine using the information of the packet obtained by executing the packet detection routine. The called subroutine initializes the appropriate system for the communication device.

It should be noted that the packet detection routine does not operate by itself, but instead operates in another process of the operating system (for example, a dispatcher).
Process) to execute the process.

The Dispatcher process is generally a low-level process of the system, is always executed for network processing, and has a callback function calling mechanism.

This callback function MySpyProc is temporarily registered in the system as a callback function by the packet detection routine, and is called by the Dispatcher process. This procedure (callback function My
SpyProc) is responsible for the process of actually detecting the received packet.

Next, the processing procedure of the main initialization sequence of the system will be described with reference to the flowchart of FIG.

Here, a description will be given of a process in a case where the computer system 710 is activated in the network system shown in FIG. 7 and this system initializes the communication device.

When the computer system 710 is started, the initialization sequence initializes the data for managing the routing information of the network stored in the memory 630 (step 801).
A packet transmitted on the Ethernet is read in order to initialize data for managing the Ethernet connection state stored in 0 (step 802). In this method, a transmission / reception process of the Ethernet driver is started, and the transmission / reception process reads a packet.

When a packet is read, the initialization sequence checks the packet by calling and executing a packet detection routine (step 803), and calls subroutine 1 or subroutine 2 according to the check result (step 803). 804).

In step 804, if the inspected packet is other than the one in the computer system 710, the subroutine 1 is called. The called subroutine 1 determines that the network configuration has been changed to the Ethernet configuration as shown in FIG. Then, the subroutine 1 performs the remaining initialization of the main initialization sequence if necessary (step 901), and thereafter completes the reconfiguration of the system (ends the initialization) (step 902).

On the other hand, if it is determined in step 804 that the inspected packet is not a packet other than the network system 710 (that is, if the packet is transmitted by the computer system 710), or if the packet itself cannot be detected, the subroutine 2 Is called. The called subroutine 2 judges that the network configuration is not the Ethernet configuration as shown in FIG.
An initialization routine of the communication modem 670 is executed (step 1001). Then, the subroutine 2 performs the remaining initialization of the main initialization sequence if necessary (step 1002), and completes the reconfiguration of the system (ends the initialization) (step 1003).

Next, the determination processing for determining whether or not a network (Ethernet) is connected by the packet detection routine in step 803 in FIG. 8 will be described with reference to FIGS.

In these figures, “b” indicates a pointer to a received packet, “spyProc” indicates a procedure variable, “condition” indicates a condition variable, and “wait” indicates a logical (BOOLEAN) variable. Is shown. “NOTIFY” and “WAIT” are operating system commands used when executing parallel processing. Note that "condition variable", "NOTIFY", and "WAIT" are one of the classic concepts of the operating system and the parallel processing, as is well known, and are known as "Hore's MONITOR (monitor) model".

First, a processing procedure of the Dispatcher process for performing predetermined processing in cooperation with the packet detection routine will be described with reference to the flowchart of FIG.

The Dispatcher process sends a transmission request to the device driver by adding a necessary header portion to the transmission data passed from the higher-level software (step 1101), and a pointer to the received packet passed from the device driver. The data part of the received packet is extracted based on b (step 1102).

Next, the Dispatcher process checks whether or not the value of the procedure variable spyProc included in its own process is valid (step 1103). If the value is valid, the Dispatcher process adds the procedure variable spyProc to the received packet. (Step 1)
104). Then, the received packet received from the device driver is passed to the upper software (step 11).
05). In step 1103, the procedure variable sp
If the value of yProc is not valid, the process proceeds to step 1105. After the end of step 1105, the process returns to step 1101 and the steps after this step are executed.

Next, the processing procedure of the packet detection routine will be described with reference to the flowchart of FIG.

In the packet detection routine, the timeout of the condition variable condition is set to 5 seconds (it is sufficient for a human to wait, and it is sufficient if the network takes a long enough time to process the packet) (step 12).
01) Then, the current procedure variable spyProc is saved to the old procedure variable oldSpyProc (step 1202), and the callback function MySp
yProc is registered as a procedure variable spyProc (step 1203).

At this point, it is operating as a separate process.
MySpyPro callback function by Dispatcher process
Execution of c is started.

Subsequently, the packet detection routine sets a logical (Boolean) variable wait as a global variable to TR.
UE (true) (step 1204), and further waits for the condition variable condition (step 120).
5). As a result, the process of the packet detection routine waits on the condition variable condition. The processing of this packet detection routine process is executed again because the condition variable condition is NOTIFYed in the callback function MySpyProc, or the condition variable co is
This is the case where 5 seconds have elapsed without ndition being NOTIFY.

Therefore, if the condition variable condition is not NOTIFY and five seconds have elapsed, the packet detection routine will resume execution, and this packet detection routine will save the current procedure variable saved in the old procedure variable oldSpyProc. After restoring the procedure variable spyProc (step 1206), a Boolean variable (wait)
Is TRUE or not (step 1207).

At step 1207, the logical type (Bool
ean) If the variable wait is TRUE, it is determined that there is no packet (because of resumption due to timeout), and the result is returned to the main initialization sequence of the system (step 1208), while a Boolean variable
If wait is not TRUE (callback function MySpyPro
It is determined that there is a packet (because c was NOTIFY), and the fact is returned to the main initialization sequence of the system as a result (step 1209). Step 1208
Alternatively, after the end of step 1209, the control returns to step 803 in FIG.

Next, the procedure of the callback function MySpyProc, which is temporarily registered in the system as a callback function by the packet detection routine and further called by the Dispatcher process, will be described with reference to the flowchart of FIG.

The callback function MySpyProc is called Dispatcher
If the computer system 710 is not connected to a network, it is called only when the process receives a packet.
Is not NOTIFY. When a packet is received, it is checked whether the type of the packet has a correct value. If the packet has an abnormal value, the process returns.

For example, if the communication protocol is XNS (Xerox
Network System), the callback function MySpyPro
The procedure for c is that the packet type is ns (= 1)
It is determined whether or not the packet is an ns type packet (step 1301). If the packet is an ns type packet, the source address (source address of the packet) is obtained from the buffer indicated by the pointer b to the received packet (step 1302). Check whether it is the same as its own host address (address of its own computer system) (Step 1)
303). The reason why the processing in this step is necessary is that the receiver itself receives a packet addressed to itself by transmitting a broadcast packet (a packet transmitted to all hosts (host)).

If it is determined in step 1303 that the address is different from its own host address (that is, if the packet is sent from another host), it is checked whether the logical (Boolean) variable wait is TRUE (step 1303). Step 1304).

If TRUE in step 1304, the logical type (Boolean) variable wait is set to FALSE (step 1305), and the condition variable condition
Is NOTIFY (step 1306). Here, since the logical type (Boolean) variable wait is a global variable, if the logical type (Boolean) variable wait is FALSE in step 1305, the packet detection routine determines the logical type (Bool) in step 1205 in FIG.
ean) It is determined that the variable wait = FALSE.

If it is determined in step 1301 that the packet is not an ns type packet, and if it is the same as its own host address in step 1303,
If it is not TRUE in 4, Dispatcher without doing anything
The process returns to the process (Step 1104 in FIG. 11).

In this embodiment, step 13
After the evaluation of 04YES, the steps 1305 and 1306 are executed only once when a packet transmitted from another host (host) is first recognized.

As described above, according to the second embodiment, a packet transmitted to the Ethernet is read when the system is started. At this time, it is determined whether or not there is a packet from another computer system. Based on the judgment result, the connection state of the Ethernet of the own computer system is recognized, and when it is recognized that the Ethernet is connected, the initialization process of the RS232C and the modem is not performed. Depending on the recognition result of the connection state, an unnecessary initialization sequence (initialization processing of the RS232C and the modem) can be bypassed, and an initialization sequence corresponding to the Ethernet connection state can be executed. Therefore, the system startup time can be reduced.

Further, the main initialization sequence of the system in the second embodiment can be used as a part of the initialization processing of the peripheral device by the initialization process in the first embodiment. Specifically, the main initialization sequence of the system (the processing procedure of FIG. 8) can be used as the processing procedure of steps 402 to 406 of FIG.

Further, the packet detection routine (step 803 in FIG. 8) in the second embodiment checks whether the Ethernet has been disconnected during the operation of the system, for example, in addition to the processing at the time of initialization of the computer system. It can also be used for the purpose of processing.

As described above, in this embodiment, the configuration information indicating the configuration of the peripheral device immediately before the power is turned off is stored in the CMOS memory device, and after the power is turned on again, the configuration indicating the configuration of the peripheral device immediately before the power is turned off. The configuration of the peripheral device is not compared with the configuration of the peripheral device after the power is turned on, and the configuration data indicating the configuration of the peripheral device is not initialized according to the comparison result. The stored contents are accessed, and for all the stored contents, a process of comparing (matching or not matching) the configuration of the peripheral device immediately before power-off with the current configuration (state) of the peripheral device after power-on is performed. It is not necessary to execute the process, and the initialization process can be performed quickly.

[0090]

As described above, according to the present invention, the state storage processing means stores the data indicating the internal state of the system, which is stored in the main storage means immediately before the power is turned off, in the storage means, and recovers the state. Means for restoring data indicating the internal state of the system stored in the storage means when the power is turned on again, and a part of the data indicating the internal state of the system restored by the state restoration means by the initialization means. Is initialized on the basis of the current state of the peripheral device, so there is no need to store data indicating the state of the peripheral device immediately before the power is turned off, so that the memory resources are used effectively. can do.

Further, as in the prior art, the stored contents of the CMOS memory device are accessed, and for all the stored contents, the configuration (state) of the peripheral device immediately before the power is turned off and the current peripheral device after the power is turned on again (state). It is not necessary to execute the comparison process (whether or not they match), so that the peripheral device can be quickly initialized. Therefore, it is possible to provide a computer system that can significantly reduce the system startup time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a computer system according to the present invention.

FIG. 2 is an exemplary view for explaining files stored in a hard disk according to the first embodiment;

FIG. 3 is a flowchart illustrating a processing procedure of a state storage processing process according to the first embodiment.

FIG. 4 is a flowchart illustrating a processing procedure of an initialization process according to the first embodiment.

FIG. 5 is a flowchart showing a processing procedure of a state recovery process in the first embodiment.

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

FIG. 7 is a diagram showing an example of a network system including a computer system according to the present invention.

FIG. 8 is a flowchart illustrating a processing procedure of a main initialization sequence of the system according to the second embodiment.

FIG. 9 is a flowchart illustrating a subroutine of a main initialization sequence of the system according to the second embodiment.

FIG. 10 is a flowchart illustrating a subroutine of a main initialization sequence of the system according to the second embodiment.

FIG. 11 is a flowchart illustrating a processing procedure of a process that is constantly executed for network processing in the second embodiment.

FIG. 12 is a flowchart illustrating a processing procedure of a packet search routine according to the second embodiment.

FIG. 13 is a flowchart showing a processing procedure of a procedure of a callback function in the second embodiment.

[Explanation of symbols]

10 ... keyboard, 20 ... display, 30,630
... Memory, 40 ... Floppy disk, 50 ... Hard disk, 60 ... LAN board, 70 ... RS232C interface, 80,680 ... Central processing unit, 90,690
... System bus, 100 ... Network, 110 ... Modem, 210 ... Normal system file, 220 ... Temporary system file, 230 ... System state file, 61
0: keyboard / mouse device, 620: display device, 64
0: Floppy disk device, 650: Fixed disk device, 660: Ethernet device, 670: Communication modem device

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-1-136220 (JP, A) JP-A-63-54616 (JP, A) JP-A-63-31640 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) G06F 1/24 G06F 1/30 G06F 13/00

Claims (6)

(57) [Claims] 1. A computer system having an interface unit for performing a connection process with a predetermined communication network, wherein the interface unit is physically connected to the predetermined communication network and the predetermined communication is performed. Determining means for detecting information on the network and determining, based on the information, whether the interface means is in a state capable of logically connecting to the predetermined communication network; A computer system comprising: initialization means for initializing a network environment of the computer system including the interface means using an initialization routine corresponding to a state determined by the means. 2. The method according to claim 1, wherein the determining unit determines whether or not a logical connection with the predetermined communication network is possible based on whether or not a connection is sequentially performed from a network that performs high-speed communication. The computer system according to claim 1, wherein: 3. The network system according to claim 1, further comprising a notifying unit that notifies a user of a logical connection state with the predetermined communication network determined by the determining unit. 4. The method according to claim 1, wherein the determining unit determines that a logical connection with the communication network is possible when the interface unit receives a packet transmitted from a device other than the own device. The computer system according to claim 1, wherein 5. A computer system comprising: a main storage means for storing data indicating an internal state of the system; and an interface means for performing a connection process with a predetermined communication network, wherein a storage content of the main storage means is provided. Storage means for storing the contents stored in the main storage means immediately before power-off in the storage means; and state recovery means for recovering the storage contents stored in the storage means when power is turned on again. Means for detecting information on the predetermined communication network in a state where the interface means is physically connected to the predetermined communication network when power is turned on again, and based on the information, the interface means detects the information on the predetermined communication network. Determining means for determining whether a logical connection with the communication network is possible or not; and A computer system comprising: an initialization unit for initializing the network environment as a part of the storage contents recovered by the state recovery unit using an initialization routine according to the state determined by the unit. . 6. A computer system comprising: a main storage unit that stores data indicating an internal state of the system; and an interface unit that performs a connection process with a predetermined communication network. Storage means for storing the contents stored in the main storage means immediately before power-off in the storage means; and when the power is turned on again, the date and time of writing the storage contents stored in the storage means. And a start-up control unit for stopping a recovery process of the stored contents when the access date and time of the storage unit do not match with each other and performing a normal start-up process when the stored contents do not exist. And a computer system.