JPS58219629A - Key input interruption driver processing system - Google Patents

Abstract

PURPOSE:To eliminate the waste of an interruption signal output to a CPU, to simplify the program of the CPU, and to relieve the load on it, by selecting a signal from a keyboard through an interruption driver. CONSTITUTION:The interruption driver 6 is connected to the keyboard 7 and an interruption signal corresponding to an input from the keyboard 7 is generated and inputted to the CPU1 through an address data and control bus 8. Data corresponding to the interruption signal is displayed on a display 5 under the control of the CPU1. Data corresponding to respective display states of the display 5 are set in the tables of a data ROM9 by the display states previously. When receiving the input from the keyboard 7, the driver 6 judges the current display state of the display 5 and reads data out of the table corresponding to the display state to supply data coincident with the key input contents to the CPU1 as an interruption corresponding to the display state, simplifying the program a program ROM3.

Description

[Detailed Description of the Invention] [Description of Technical Field] The present invention sends a signal input from a keyboard to an interrupt driver, generates an interrupt in a central processing unit (hereinafter referred to as CPU), and executes an interrupt processing program (from The present invention relates to a key human input interrupt driver processing system that displays human input data on a display device.

[Description of prior art]

In the conventional key human interrupt driver processing system, the signal from the keyboard is
The interrupt signal was output to the CPU, which converted it into an interrupt signal. In this case, the more keys there are on the keyboard, the more types of interrupt signals output from the interrupt driver to the CPU.

Therefore, when the CPU accepts the interrupt signal from the interrupt driver, the current display device 1 such as CI'LT
″-Regarding the state of the displayed screen, the receiver must judge whether the signal attached is a signal that can be processed.
There was a drawback that the CPU program became 1/1 when the program became complicated.

[Object of the Invention] The object of the present invention is to prevent the interrupt driver from converting unnecessary data into an interrupt signal to the CPU even if unnecessary data is manually entered for the surface state currently displayed on the display device. An object of the present invention is to provide an interrupt driver processing system that prevents the complexity of a CPU program and reduces the burden.

[Summary of the Invention] The key manual interrupt driver processing system according to the present invention includes an interrupt driver that receives key manual input from a keyboard and generates an interrupt signal corresponding to the key manual input, and an interrupt signal generated by the interrupt driver that is input to the interrupt driver. A central processing unit that outputs corresponding data to a display device, and a memory each having a table in which data to be displayed in each display state of the display device is set in advance for each display state, When a key is input manually, the interrupt driver 11 determines the current display state of the display device, reads data from the table corresponding to this display state, and matches the content of the key input. If there is a match, an interrupt signal corresponding to this key input is given to the central processing unit, thereby preventing unnecessary interrupt signals from being given to the central processing unit.

[Embodiment of the Invention] The present invention will be described in detail below with reference to an embodiment shown in the drawings. The CPU 1 is a read-only memory (hereinafter referred to as ROM) that stores programs through address, data, and control paths (hereinafter referred to as bus) 8.
3. Data 1 (OM 9) that stores various data, Random access memory (hereinafter referred to as theory) 2, Output port 4
data is received and passed between them. The output boat 4 is connected to a display device, for example a plasma display 5. The CPU 1 is also connected to an interrupt driver 6 through a path 8 and receives interrupt signals.

The interrupt driver 6 is connected to the keyboard 7, receives key input signals from the various key switches shown in FIG. 2, and takes out key input signal data preset in the data ROM 9 through a path 8. Then, an interrupt signal is sent to CPU 1 through path 8.
0 FIG. 3 shows a table or contents indicating the screen status of the plasma display 5, and FIG. This shows the settings.

First, a level is determined as a criterion for determining the display state of the plasma display 5. In other words, the non-display state is set to level ``'0'', and the mode display, for example, ``1 Seigiyo'' is displayed (the leaking state is set to level ``'1'').
''.Similarly, each level is determined, and the setting data for each level is stored as a table in the data ROM 9.First, from the state of level 10'', press the mode display key on the keyboard 7, e.g. When the "control" key is input, the interrupt driver 6 specifies the setting data table 9-0 for the level uO'' shown in FIG. Determine if there is. In this case, since there is a matching turtle, the character data "Seigyo" is displayed on the plasma display 5, and the display status is set to Mill.
shall be. Next, use the numeric keypad from keyboard 7 to enter the number “
1" key manually, the data RAM 9 +=
Stored setting data table 9-1 for level controller 1'
and determines whether there is one that matches the number "1". In this case, since there is a match, the character data of the number "1" is displayed on the plasma display 5. In this way, the data is entered sequentially using the keys, and characters are displayed as shown in FIG. Here, level t″0″,
Or for each level of "Level @ 1", keyboard 7
If the data manually input from the key is not in the setting data table of the corresponding level stored in the data ROM 9, the interrupt driver 6 determines it as an unnecessary key input signal and does not generate an interrupt signal to the CPU 1.

FIG. 5 shows a flowchart of a program set for the interrupt driver 6 to execute the above functions. Below is this flowchart;
The following describes the case where the "control" key is turned on after setting "O')". First, the keyed data is picked up (step B), and then the 1 counter is cleared (step b). This counter is used as an index for reading data from the table shown in FIG. 4 set for each level. Next (2) Read the value of this counter (step e) and judge whether the counter has finished. Also, judge the level of the display state at the same time. In this case, since it is the first key input from the non-display state,
The count value of the above counter (
In this case, O) is read out as an index (step d).

As shown in FIG. 4, in the table 9-0 at level 50'', the data at address 0 read out using the count value (0) as an index is ``Seigyo'', and this is read out. Then, it is determined whether the key matches the manually entered data "control" (step e).

In this case, since they match, an interrupt signal corresponding to the data "Seigyo" is output to the CPU 1, and the characters "Seigyo" are displayed on the plasma display 5.

After that, the counter is finished, step g), and the level is changed to the level tI with the character "Seigyo" displayed.
II' and return to step C. In step C, since the counter has ended, the process ends immediately. Next, when the number "1" is input using the numeric keypad, the same operation as described above occurs. That is, in step C, it is determined that the level is 61'', and in step d, data is read out from table 9-1 shown in FIG. 4 corresponding to level I11'' using the count value of the counter as an index. In Table 9-1, the data at address 0 read from the first count value (0) In is the code of the number rOJ, and the match determination in step e is determined as NO, and the counter is incremented in step l to 0, Proceed to step c and di. In step d, the count value of the counter again (1 due to count up)
) is used as an index to read the data at address 1 of table 9-1. This data is a code for the number "1", and the match determination in step e is determined to be YES, and a corresponding interrupt signal is sent to the CPU i to display the number "l".

The subsequent operations are the same as those described above, so the explanation will be omitted.
Ru.

On the other hand, if content that is not in the current display state, for example, level @1'' table 9-1, is entered due to an erroneous operation, the matching judgment in step e will not be YB2 + 2, so all of the contents in table 9-1 will be input. For each address, step e, d, e
, i and finish. Therefore, this key power is not output to CPU 1 .

In response to the interrupt signal from the interrupt driver 6, the CPU 1 extracts and decodes the instruction word from the program RAM 3 through the node 8. Next, the CPU 1 extracts the command word from the program RAM 3 through the node 8 and decodes it.
The display data to be displayed is taken out and outputted to the output port 4 through the bus 8.

[Effects of the Invention] As described above, according to the present invention, since the signal from the keyboard can be selected by the interrupt driver, the output of the interrupt signal to the CPU is not wasted, and the programming of the CPU is simplified and the burden is reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a key manual interrupt driver processing system according to the present invention, FIG. 2 is a diagram showing an example of the key arrangement of a keyboard used in the present invention, and FIG.
2 is a diagram showing a display example of the display device used, FIG. 4 is a diagram showing the contents of a data table used in the present invention, and FIG. 5 is a flow chart explaining the present invention in detail. 1... Central processing unit 2...) LAM 3... Program RO
M4...Output boat 5...Display device 6...
Interrupt driver 7...Keyboard 8...Madress, data and control path 9...Data I'L
OM (7317) Representative Patent Attorney Kensuke Chika (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] An interrupt driver that receives key input from the keyboard and generates a corresponding interrupt signal; a central processing unit that inputs the interrupt signal generated by the interrupt driver and outputs the corresponding data to a display device; and a memory each having a table in which data to be displayed in each display state of the display device is set in advance for each display state of the display device, and the interrupt driver reads the current display state of the display device when a key is manually input. The data is read from the table corresponding to this display state C2, and it is determined whether there is anything that matches the key human input content.If there is a match, the interrupt signal corresponding to this key human input is processed by central processing. A key human interrupt driver processing system configured to provide the device.