JPH03225515A - System starting method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Field) The present invention provides system startup power suitable for use in a personal computer that has multiple settings or motes that require restarting the system. ? Regarding leaving.

(Prior Art) In the field of personal computers, the compact, light and portable laptop type has become popular in place of the conventional disc computer. This kind of laptop type personal computer uses a flat type display device such as a plasma display (FDP) or a liquid crystal display (LCD), and many of them are battery-powered. Therefore, efforts are being made to save power everywhere. Additionally, in order to improve operability, it is essential to support a resume function that allows programs to be executed from the state immediately before the power was turned off when the power is turned on again.

By the way, personal computers with multiple modes of system startup, for example, multibasonality systems that support multiple operating systems,
Require mode selection at system startup. This mode selection includes execution or non-execution of the above-mentioned resume mode.

If you try to set this type of personal computer to a mode different from the one when the power was turned off last time, the system will start up with the previous settings and perform the necessary processing (setting change).
I had to do this and reboot the system again. In particular, the resume function faithfully reproduces the state when the power was turned off, so even if you do not want it to be reproduced (such as when the device hangs up due to a programming error), the resume function is realized and becomes meaningless. .

In this way, conventionally, when you want to use a device with different settings from when the power was previously turned off, or when you want to resume a hung state, you have to take unnecessary measures (rebooting the system, adding a forced reset switch, etc.) There were other problems.

(Problem to be Solved by the Invention) By the way, there is a method of using a reset button to cancel the resume function. However, if this method is followed, a hardware called a reset button is required, and software is required to distinguish between a reset by the reset button and a reset by turning on the power.

The present invention has been made in view of the above circumstances, and includes a function that allows the user to select whether or not to use the resume function the next time the power is turned on, even if the power is turned off with the nodium function activated. The purpose of this invention is to provide a system startup method suitable for use when constructing a personal computer.

[Structure of the Invention (Means for Solving the Problems) The present invention provides a personal computer having multiple operating modes for system startup, in which specific keys on the keyboard used for data input in normal use are activated at system startup. It is used for a different purpose, and by detecting a specific key press at power-on or reset, the operating mode is returned to the default state, and the system restart process is executed according to that mode. Features.

(Function) A key press is detected by a routine in the system ROM during power-on processing. Based on this, it is determined whether or not to execute resume processing.

The system startup method is changed according to the result of this judgment. This makes it possible to select the use of the resume function even when the power is turned on.

According to the present invention, it is possible to decide whether to use the resume function or fortune-telling before turning off the power (before shutting off the power) and also when turning on the power (when the power is turned on).

As a result, the original function can be operated without having to resume an undesired state (out of control/unused knots are working, etc.).

(Example) Hereinafter, an example of the present invention will be described using the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In the figure, reference numeral 1 is a reset button, and by pressing this reset button 1, the entire system can be reset. Although the reset button 1 has conventionally been necessary, it is not necessarily required by using the present invention. No. 71 2 is a power-on reset circuit. The symbol μ'3 is a CPU including BiO2-ROM
It is.

The BrO3-ROM manages the basic input/output operations of the personal computer. It also performs a resume function and detects key presses, which are essential to the present invention. Reference numeral 4 is a keyboard, which has specific keys that are used for different purposes only when the system is started.

Code 5 is a power supply device, and a power switch (P-8W)
The power supply is controlled by turning on/off the power supply.

FIG. 2 is a flowchart showing the operation of the embodiment according to the present invention.

In the figure, a is a step for performing self-diagnosis of the system, which checks the basic system operation. b is a step added by the present invention for determining whether a specific key has been pressed, and is a processing routine for determining whether the user desires to resume. C is a routine that implements the resume function, and is called after step b.

The operation according to the embodiment of the present invention will be described below.

First, when the system power is turned on, the power-on reset circuit 2 operates to reset the CPU 3. Here, the BIO3-ROM performs a self-test according to the flowchart shown in FIG. 2 (step a in FIG. 2). When it is confirmed through this self-test that the system operates normally, the CPU 3 performs a self-test according to the flowchart shown in FIG. The process is performed according to the steps shown, and it is detected whether the user is pressing a meaningful key (specific key).

Here, the meaningful key may be one predefined data key or a combination with a control key. Here, it is assumed that the CtlJ key and the rCJ key are pressed at the same time.If this key combination is not detected, resume the F!! 111 step (step C in Figure 2) as before. , if it is detected that the above-mentioned specific key has been pressed, normal rise-low processing (no resume is performed) is carried out unconditionally.

In addition, as an application of the present invention, the resume function can be canceled 5/'
It is also possible to consider providing a dedicated switch for setting.

Furthermore, the present invention can also be applied to system configuration errors other than Linneem. For example, B I
03-ROM/RAM switching, external floppy disk A/B switching, internal display mode selection, etc. can be switched by a simple operation of turning on the power in conjunction with pressing a key. Furthermore, if the entire system configuration is assigned to a key, the following usage can be considered. In other words, if you start up without pressing the "Fl" key, it will enter Japanese mode and press "F2".
If you start it up while holding down the key, it will go into English mode. In this case, whereas conventionally only one system configuration line was allowed for one device, it becomes possible to use multiple system configuration lines depending on the situation.

[Effects of the Invention] As explained above, by using the system startup method of the present invention, it is possible to
You can also decide whether to use the resume function when turning on the power. As a result, the device can be operated without resuming an undesired state (runaway 7' unused software is running, etc.).

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flowchart showing the main processing flow in the embodiment of the present invention. ]...Reset switch, 2...Power-on 1 set circuit, 3...CPU, 4...Keyboard, 5...
power supply.

Claims (1)

[Claims] In a personal computer that has multiple operating modes for system startup, by detecting the press of a specific key at power-on or reset, the operating mode is returned to the default state, and the system is restarted according to that mode. A system startup method featuring: