JPS61127021A - Terminal equipment - Google Patents

Abstract

PURPOSE:To attain an automatic initializing action by informing a fact that a power supply cut-off switch of a terminal equipment is pushed to a microprocessor in the form of an inhibition unable interruption signal and saving the state set immediately before the power supply is cut off to a nonvolatile memory. CONSTITUTION:An operator sets a cut-off switch 32 for application of power supply at the OFF side after he/she is through with the use of a terminal equipment 2'. Thus a power supply controller 31 produces a power supply cut-off signal showing a fact that the switch 32 is set at the OFF side and delivers this signal to a microprocessor 6. The processor 6 detects said signal and avoids the present program running state, etc. to a disk device 5a. Then the processor 6 transmits a signal showing the permission for cut-off of the power supply of the controller 31.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention saves the status information of a terminal device immediately before the power is cut off to a nonvolatile memory such as a disk device, and saves the status information of the terminal device immediately before the power is turned off to a non-volatile memory such as a disk device, and when the power of the terminal device is first turned on. The present invention relates to a terminal device that can automatically restore the device to the state it was in before the power was cut off when the device was turned off.

[Conventional technology]

Figure 3 is a functional block diagram showing a conventional terminal device.
In the figure, (1) is the host computer that sends programs and data to the terminal device (#), sends out operation commands, and manages the movement of the terminal device (#), and (3) is the host computer (
The communication line connecting 1) and the terminal device (K), (DA) is the terminal! ! 11 (λ) is the communication control unit (CCu), (j) is the disk dividing device (DISK-CNT) of the terminal device (2).
), (ta) are disk devices connected to the disk control device (!)K.

(6) is a microprocessor (
μ・p), (wa) is a microprocessor (reader-only memory (in which the program for operating AI is stored)
Hereinafter referred to as ``RoMJ6), (za) is RAM, which is the system memory of the terminal device, and (?) is the terminal device (co).
Keyboard control 1 device (x/B-cxT), (toa), which can display the status of the computer and send information to the terminal device (x/B-cxT) by message to the operator under program control, (toa) is the keyboard distinguishing device (10). Connected keyboard device
i t ) is a switch that turns on and off the power of the terminal device (k), and (12) is a power supply device that supplies power to the entire terminal device.

Figure 1 shows the operation flow of a conventional terminal device.

Next, the operation will be explained using FIG. 3 and FIG.

When the operator turns on the power switch (11) and the power is turned on (Step 8/ in Figure D), the microprocessor (6) executes the program pre-stored in the ROM. Host calculation%(1) by
A program for controlling the terminal device (2) is loaded into the RAM (ff) via the communication line (3) or from the disk device (3) (S). When this load #1 operation is completed, the allocation is transferred to the separate program loaded into the RAM (1), diagnosis and optimization of the terminal device (2) are performed (S3), and the terminal device's “ Initialization-
1' processing is performed. Only after this process is completed,
Terminal! The functions defined in this location become available.

The above description has been made of the case where control is transferred to the control program transferred to the RAM (ff) by the button for executing the program stored in the ROM (ri).

This "initialization-l" process may be performed entirely by a program in the ROM (71).

When the above processing is completed, the operator may define this terminal device (K) as a terminal device that communicates data with the host computer (/), or define it independently of the host computer (/l).

A program is read from its own disk device (ja), and the terminal device [initialization-λ] processing is executed to define it as a personal computer or an office computer (s<c). This "Initialization-2" process is normally performed by an operator responding to a message displayed on the OR'r device (9a).

Runs under the control of a control program.

[Problem that the invention seeks to solve]

Since the conventional terminal device is configured as described above, further operations f'\
In order to optimize the terminal device for the user's intended use, "initialization" processing was required. In this "initialization" process, the program that the operator wants to use is loaded into the terminal device from the host computer via the communication line, or read from the disk device of the terminal device and stored in the terminal device's RAM. In order to store the data, the control program selects the CRTtl[l[
It was necessary for the operator to respond to the output message by operating a keyboard device. In addition, the program that the operator wants to use is usually the same every time, and W
In most cases, the program that was being used before the power was shut off must be called again, but the initialization procedure must be performed from the beginning each time.

There were problems in that the operation was complicated and the burden on the operator was large.

This invention was made in order to solve the problems of conventional terminal devices as described above. When the power of the terminal device is turned on, the initialization operation is performed until the terminal device is restored to the state immediately before the power was turned off. The object of the present invention is to provide a terminal device that can significantly reduce the burden on the operator by performing the following steps.

[Means for solving problems]

In order to achieve the above object, a terminal device according to the present invention includes:
A power supply equipped with a means for detecting that the power has been cut off using a power on/off switch, notifying the microprocessor of this using a power cutoff NMI signal, and generating a power cutoff command signal based on a command from the microprocessor. A control device, a non-volatile storage means, and a ROM pre-stored with an NMI processing step for saving information regarding the state of the device at that moment to the non-volatile storage means in response to an NMIat signal sent to the microprocessor. ing.

[For production]

In this invention, when the power is cut off using the power on/off switch, a power cutoff NMI signal to that effect is notified to the microprocessor, and the status information of the terminal device at that time is made non-volatile under the control of the microprocessor. and then stored in the storage means of.

The power to the entire terminal device is cut off, and then, when tS is turned on, the state information of the terminal device stored in the non-volatile storage means is read out and restored to the state of the terminal device immediately before the power was cut off. Therefore, initial settings are made using a microprocessor.

C Embodiment] Hereinafter, one embodiment of the present invention gAJ will be explained with reference to the diagram. It is a power supply control device (in PS/CtJ) that controls power cutoff,
(32) is a switch for turning on/off the power of this terminal device, and (33) is a switch for turning on/off this power (J2).
When F'@ is turned off from the input side to the disconnection side by the operator F'@, an interrupt that cannot be prohibited for power shutdown that notifies the microprocessor (6) NM I (Now-Maskah4)
Interrupt) signal, (3a) is the power cutoff command signal output from the source control device i (j/) to the power supply device (Jl), (,ys) is the power cutoff command signal (,
This is a power supply device that shuts off the power in response to the power supply switch (3, 2) and turns on the power when the operator turns on the power on/off switches (3, 2).

Figure gX2 explains the operation flow of the terminal device according to the present invention.

After using the terminal device t(1'), the operator sets the 11L power on/off switch (, ?, 2) to the off side (
Step T/) in Fig. 2 and the source side device i (, y
t) is.

A power cutoff NMI signal indicating that the power supply cutoff switch (32) is set to the cutoff side is generated.

Microprocessor (A) outputs k. When the microprocessor (A) detects this power cutoff NMI signal.

Current program running status and input/output device status.

Information on the screen of the CRT device (9a), etc. to the disk device)
Execute the processing program to save to (!11) (T, 7). Thereafter, the microprocessor (A) executes a command to inform the power supply control device (Jl) that the power can be cut off (Tda). The power supply control device (, yt) receives and decodes this command, and sends a power cutoff command signal (3da) to the power supply device (3da).

The power supply device (,
? j)t-! Cut off the power to the entire terminal device (same Tt)
.

Next, when the operator turns on the power on/off switch (32) to the on side to turn on the power to the terminal device (TA),
The power supply device (3r) directly powers on the entire terminal device. When the power is turned on, the ROM of the terminal device 11 (1')
The program stored in the microprocessor (
6), the above-mentioned sister (communication line (3)
), or the control program is read from the disk device (5), and the control program is loaded into the RAM (g) (T7). When the above loading operation is completed, control is transferred to the discount program loaded into the RAM (ff), and initialization operations such as diagnosis and optimization of the terminal device are performed.

This initialization # work is the "initialization -" of the conventional device shown in the third and
7. I'm busy with processing. This initialization operation is complete.

Once completed, it continues to read the status information of the terminal device that was evacuated just before the last power-off from the disk device (!a), and loads a program to automatically reconfigure each part of the terminal device into the RAM (7). 1. By running the terminal device, the terminal device is returned to the state immediately before the power was cut off (IM). When the above operations are completed, the terminal device becomes ready to operate as intended by the operator (T10
).

The "initialization-2" procedure, which the operator had to perform each time the power was turned on with conventional equipment, is automatically executed, so the operator only needs to
If you are busy trying to operate the terminal device in the normal usage mode, you can omit the "Initialization-2" operation.

In the above embodiment, a disk device (!r9) is used as the nonvolatile memory, and a CRT device (?a) is used as one display device. It may be. Further, one display device may be a liquid crystal display or other seven-panel type.

〔Effect of the invention〕

As described above, according to the present invention, the NMI signal is used to notify the microprocessor that the power cutoff switch of the terminal device has been pressed, and the microprocessor saves the state immediately before the power cutoff to the nonvolatile memory. Since the configuration is as follows, terminal devices that are used in a fixed manner...
1! Since the initialization operation of the terminal device can be performed automatically when the power is turned on, it is possible to significantly save the operator's effort and time before starting work. It also has the effect of preventing wasted time due to operational errors.

[Brief Description of the Drawings] Fig. 1 is a functional block diagram of a terminal device according to the present invention;
FIG. 3 is a functional block diagram of a conventional terminal device, and FIG. 3 is a flowchart of operation of a conventional terminal device. (5a) is a disk device, (6) is a microprocessor, (wa) is a ROM, (f) is a RAM, and (, 7/) is a power supply sterilization device. (32) is the power on/off switch, (33) is the power off NMI signal, (Ja) is the power off signal, and (J
s) is a power supply device. In addition, in FIG. 1, the same reference numerals indicate the same or equivalent parts. Fig. 1 32゛Power on/off switch 33: Power off NMI signal 34 Power off command signal 35: @Genhoin Fig. 2 Fig. 3

Claims (3)

[Claims] (1) a power supply control device that gives an NHI signal to a microprocessor that manages the entire device when an operator operates a power cutoff switch, and generates a power shutdown command signal for the entire device based on a command from the microprocessor;
A non-volatile storage means retains stored information even in a power-off state, and when the microprocessor receives a power-off NMI signal, information regarding the state of the device at that moment is saved to the non-volatile storage means. and a ROM in which NMI processing steps to be performed are stored in advance, so that the next time the device is powered on, the microprocessor makes initial settings to reproduce the state in which the power was cut off last time. Terminal device. (2) The terminal device according to claim 1, wherein the nonvolatile storage means is a disk device. (3) The terminal device according to claim 1, wherein the nonvolatile storage means is a battery-backed RAM.