JPS59103165A - Electronic computor with program - Google Patents

Abstract

PURPOSE:To know the generation line of an error and to cope quickly with the error by displaying an error generation line with operation of a specific key in case an error arises while a program is executed. CONSTITUTION:A register and a flag circuit are provided at a part of circuits of a CPU1 with flags PRO, CUR, P and E respectively. When the flag E is set in a program execution mode or a manual operation mode, it is understood that an error arised during execution of program. Then a key (triangle black symbol) is pushed to display a program error line to show that an error is produced as a result of operation done by a cursor. At the same time, the key (triangle black symbol) is pushed while the flag E is set in a program editing mode to show a program line having an error of program execution. In this case, the cursor is set at an error position.

Description

[Detailed Description of the Invention] Technical Field, Object of the Invention The present invention relates to an electronic calculator with a program (electronic desktop calculator with a program, personal computer, etc.),
In particular, the present invention provides an electronic calculator with a program, characterized in that, when an error occurs during program execution, by operating a certain key, the program line where the error occurred is displayed. .

<Example> Examples will be described below.

FIG. 1 is a block diagram showing the system configuration of an electronic desktop calculator with a program, which is an embodiment of the present invention.

I is CPU (central processing unit), 2 is ROM (read only memory), 3 is RAM (read/write memory), 4 is human output buffer, 5 is key, 6 is display memory and buffer, 7 is display body It is.

The CPU reads ・e-, writes the take to be displayed on the display 7 to the display memory and the buffer 6, and writes the contents entered manually using the keys to the RAM 3 according to the procedure written in advance in the ROM 2. or display the contents of RAM 3 on display 7. A is address bus, D is data bus,
R/Av is a read/write signal. ROM2 contains the procedure (monitor) for reading and displaying keys, and the CPU according to the program written in RAM3.
The procedure (interpreter) for operating Ul is written in advance and is suitable for use. RAM3 is an area for storing programs and data. The input/output cover sofa 4 sequentially inputs the contents entered manually using the keys, and writes display data matching the contents into the display memory and the buffer 6, thereby causing the display body 7 to display the same. Tari, R
By putting the contents of RAM3 here and writing display data matching the contents into the display memory and buffer 6, it is used to display the same on the display body 7. It is the same read/write memory. Program writing and reading are also performed via the two input/output vanofers 4. 5 is the key, CP
It is a matrix of the stove signal S from the UI and the key signal I. When the display memory and buffer 6 receives data to be displayed on the display 7, it converts the data into a signal suitable for the display 7 and outputs the signal. This display memory and buffer 6 is composed of a display-only IC, and when data to be displayed on the display body 7 is written,
Thereafter, the configuration is such that the display signal continues to be output to the display 7 regardless of the operation of the CPU I.

Let us take RASIC as an example of a programming language. A part of the circuit of CI) U1 is shown in the block diagram of FIG.

In the figure, 8 is an instruction decoder, 9 is an instruction register, and IO
is a data buffer, 11 is a register and a flag, 12 is an address buffer, 13 is a temporary register, 14 is an accumulator, 15 is an ALU (arithmetic circuit),
16 is a carry flip-flop; +7i'; l: S buffer; 18 (dK bassoff); I9 is an internal data bus.

Hereinafter, the explanation will proceed according to the flowcharts of FIGS. 3(A) and 3(B), or before that, the key 5 shown in FIG. 1 and the flag 11 shown in FIG. 2 will be explained.

Register in Figure 2 and flag PRO1CU of flag I+
R, P and E and register C each have the following meanings.

PRO: When this flag is set, it indicates that the computer is in program editing mode (PRO mode). When this flag is reset, it indicates that the computer is in program execution mode or manual execution mode (RUN mode).

CUR: When this flag is set, display body 7
Indicates that the cursor is displayed at

When this flag is reset, it indicates that the cursor is not displayed on the display 7.

P: When this flag is set, it indicates that the displayed content is a program. When this flag is reset, it indicates that the display content is not a +d program.

E: When this flag is set, it indicates that an error occurred during program execution. This flag is CL
It is reset when you operate a key, edit a program, or run a program.

C: This is a pointer that indicates where the cursor should be displayed when the contents of the in/out sofa 4 are displayed. For example, when C=O, the cursor position is at the beginning of the display.

Key types include alphabet, number, and symbol keys, as well as MODE, CL, ↑, ↓, -14, and E.
There is a NTER key.

Each key will be explained below.

MODE key: Switch the mode. That is, PRO
→ Make it PRO. Then, clear the display and display Kerful at the beginning.

CL key: Clears the display, displays the kernel at the top, and resets E.

↑key = 1) When in program editing mode. If P is set (program display), the previous program line will be displayed and CU R will be reset.)
, P have been reset, if a program has been written, the last program line is displayed, and if no program has been written, nothing is done. 2) When the program is executed or in manual execution mode. E=1
If so, the program line where the program execution error occurred will be displayed, and the cursor will be placed at the error position (this display will only be displayed while the ↑ key is pressed; when you release it, the display will be cleared and the cursor will return to the beginning position). If it is E-〇, do nothing.

↓ key = 1) When in program editing mode. If P is set, display the next program line,
If P is reset, the first program line is displayed if the program has been written and E is reset, and if E is set, a program execution error (displays the failed program line) is displayed. However, the kernel is placed at the error location and does nothing unless the program has been written. 2) Does nothing when in program execution or manual execution mode.

1 key: Curl right/ft key, when the cursor is displayed, moves the cursor position to the right side. however,
If nothing is displayed at the position before moving, or if there is no more display, it will not move to the right. still,
If the cursor is not displayed, if P=I, the cursor is brought to the top of the display, and if P=O, nothing is done.

(Key 2 This is the cursor's left shift key. When the cursor is displayed, it moves the cursor position to the left side. However,
Does nothing if the cursor position is already at the beginning of the display. Also, if the cursor is not displayed, it is the same as the 1 key.

E N T E R key: Use this key to edit programs and execute commands.

The flowchart shown in FIG. 3 will be explained below.

(This is reading the D key, and it stays here until the key is read.

■ Test whether the input key is the CL key.

(p) When the input key or CL key is pressed, reset E. ○ ■ Clear input/output vanofa 4.

■ Clear pointer C indicating the cursor position.

■ Set CUR.

■ Reset P.

■ Test whether the input key is the ENTER key.

■ Test whether CUR is sent.

(ψ Test whether PRO is sent.

When it is reset, go to command execution.

(jj,) I' When RO is set, when the content of input/output cuck/nofa 4 is only the line number,
In order to delete that program line, the contents of input/output/renofa 4 are judged.

(ji!'1 When the contents of the input/output buffer 4 are only line numbers, delete that program line.

(i) When the contents of the input/output panopher 4 are not only line numbers, if there is a line number at the beginning, the contents are judged in order to be written into the program memory.

■ If there is a line number at the beginning, write its contents to the program memory. At this time, the contents from the beginning of the input/output banner 4 to the first ENTER code are written into the program memory. However, if a program line with the same line number already exists in the program memory, the old one will be deleted.

[Phase] Clear C.

[Phase] Since the program is being edited, reset E.

(Reset i3cUR.

■) Cent P.

[Phase] This is a routine for executing commands (RUN, LIST, etc.). Note that "command execution" includes "0→E".

□□□ If there is no line number at the beginning of the input/output vanofer 4, it is determined as an error and the processing proceeds accordingly.

(Test whether it is the SA key or the MOD E key.

1.j PRO → PRO, PRO mode → RUN
Mode - → Set to PRO mode. Then go to ■.

(Test whether the input key is the ↑ key.

(When pressing the key or ↑ key, test whether PRO is sent or not.

■ When P RO is set, test whether P is set.

[Phase] When P is set, in order to display the program line immediately before the displayed program line, input/output the previous program line to
Put it in. However, if the content already displayed is the first line of the program, the content of that line is input into the input/output buffer 4 again.

@ When P is reset, test whether a program has been written to the program memory.

[Phase] When the program is being written, the contents of the last line of the program are entered into the input/output cover sofa 4.

[Phase] Display the contents of the human output buffer 4. At this time, if C1JR=1, the contents of the buffer 4 are written to the display memory 6, and data for displaying a cursor (i.e., an underline "-") at the display position corresponding to the contents of C is also written to the display memory 6. write to. If CUR=0, pay
The contents of file 4 are written into display memory 6 from the beginning. Also, in the case of P-1, after the line number, ":" (
C1JR=0) or space (CUR=1)
Data for displaying the information is also written into the display memory 6.

[Phase] When PR and O are reset in ■ (RU
N mode), test whether E is set.

[Stock] When E is set, the contents of the error line are put into the input/output buffer 4.

■ Then, to place the cursor at the error position, enter that position into C. The error position is stored in an error position storage counter (not shown) provided in the register and flag 11 shown in FIG.

[Phase] Set CUR.

■ Set P.

[Phase] Display the contents of the error line.

[Phase] While the ↑ key is pressed, read the key to display the contents of the error line.

@ If it is the ↑ key, it will return to [phase], and if the ↑ key is released, it will go to ■ and clear the display.

[Phase] Test whether the input key is the ↓ key.

[Phase] When the input key is the ↓ key, test whether PRO is set.

When @PRO is set, test whether P is sent.

(jI') When P is set, the contents of the program line next to the displayed program line are put into the input/output buffer 4. However, when the displayed program line is the last line, the contents of the last line are input to the input/output/< sofa 4 and the process goes to [phase].

@ When P is reset, test whether the program is in program memory. It doesn't do anything when it's not in.

[Phase] When the program is stored in the program memory, test whether E is set.

o When E is reset, the contents of the first line of the program are input to the input/output cover sofa 4.

[Phase] When E is sent, the contents of the error line are put into the human output buffer 4.

[Phase] Put the error position in C.

■ Set CUR.

[Phase] Test whether the input key is the 1 key.

■ When the input key is the 1 key, test whether CUR is set. When it is sent, go to O.

■ When CIJR is reset, test whether P is set. ○ If OP is set, clear C to place the cursor at the beginning of the display content (program).

@Set CIJR.

Q: Test whether Hitokaki is Neki.

■ Test whether CUR is sent.

When CUR is being reset, go to [Stocks].

Φ When CUR is set, move the cursor 1 to the left
Perform rC-1-+Cj to shift by one. However, when the cursor is already at the beginning of the display (C=0), there is no r-IJL.

[Phase] The input key is the other key (alpha vent.

(number, symbol keys), if CUR is set, the input key will be displayed at the position specified by C, but
When CUR is being reset, -2 will erase the display once and display the entered key at the beginning of the display, C
Test whether UR is set.

■ When CUR is set, write the input key to the input/output buffer location indicated by C.

[Phase] Then, "C+1→C" is performed to shift the kernel position one place to the right. However, if there is no other position on the crowded hippopotamus sofa 4, there is no r++''l.

Then go to [Ai].

When Φ CUR is reset, the input/output buffer 4 is cleared without any change.

■ Clear C.

0 Enter the key manual content into the input/output cover sofa 4.

@ Put "1" into C (C+1 → C).

When CUR is set in O@, "C+1 → C"
Do the following. However, if there is no more position in the input/output buffer 4, and nothing is written in the position of C before adding "+1", "+1" is not added.

[Phase] When displaying the contents of a program using a command command LIST statement, it is assumed that the following program has been written as an example of the contents to be displayed.

Then, when this program is executed, (BIB-4*C) becomes negative at line 20, and an error occurs. Note that only one line is displayed.

FIG. 4 is a diagram showing key operations after the error occurs and displays performed based on each key operation.

This is an example of a fi error display, and at this time E=1.

2, when the ↑ key is input at this time, an error line is displayed while the ↑ key is pressed. on the far right
-" is the cursor, and it indicates that an error has occurred as a result of the calculations up to this point. In the flowchart in Figure 3, move on.

For 3, when you release the ↑ key, the display will be cleared (＠→■→・
・).

4 is when the ↑ key is pressed again, and the same routine as 2 is passed.

Same as 5ba3.

6 Press the MOD E key to switch from RUN mode to P.
This is when switching to RO mode, and the display is cleared (■→■→■→@→@→■→...).

7 is when you press the ↓ key while E is set in PRO mode, and the contents of the error line are displayed (■ → ■ → ■ → [Phase] → [Phase] → [Phase] → [phase])→
[F] - [Phase] → 0 → [Phase] →...).

8 displays the next line of the displayed program line by pressing the ↓ key while the program is being displayed in PRO mode. At this time, the cursor disappears (■→■→■→■→@→ [phase] → [phase] →
＠→■→・・）.

9 is when the display is cleared by pressing the CL key (
■→■→■→■→...). E is reset.

10 is when the ↓ key is entered when the program is not displayed, and the first line of the program is displayed (■
→■→■→■→0→[Phase]→[Phase]→[F]→@→0→
[Yes] → 0 →...).

11 is when the program is displayed and the numeric keys and symbol keys are input when there is no cursor, and when 3 is input, the display is cleared and 3 is displayed, and the keys input from then on are displayed in order. (If you enter 3, ■→
■−■→■→[Phase]→[Phase]→@→C)→Φ→・→・・
・Proceed as follows).

12 is when the ↑ key is input when the program is not displayed (■-■→■→■→[phase]→■→[phase]→@→[phase]→@→・), and the program is Display the last line.

13, switch to RUN mode again by pressing the MODE key.

14 I entered the ↑ key in RUN mode, but E was reset and 'sed'-, so nothing happened (■→■→■→
■→＠→■→■→■→ ).

In this embodiment, when programming content that is very similar to the content of a line that has already been programmed, the programmed line is called up (if the line is the line that was programmed immediately before, the calling operation is performed). The screen is configured so that the displayed contents can be programmed by changing only the necessary parts and then operating the ENTER key, no matter where the cursor is at that time.

This point will be explained below.

When the input/output buffer 4 is cleared in order to be able to edit the program even if the ENTER key is pressed when there is some content at the cursor position of the human output buffer 4, the buffer when the input/output buffer 4 is cleared is It is assumed that the contents of 4 are all ENTER codes, and that there is nothing in the position where the ENTER code is located (no display is performed, of course).

Even if you press the E N T E R key, the ENTER code will not be output to the human output buffer 4. Even when you list the program, the ENTER code will not be output after writing the program contents to the human output buffer 4. , write the ENTER code in the remaining part. Furthermore, ENT
It is assumed that the ER code is always located at the end position of one line of the program.

After editing the program (except when deleting it), the newly programmed contents are displayed (of the contents of the crowded cover sofa 4, the contents from the beginning to the first ENTER code are written to the program memory). .

When the program is displayed and the cursor is not displayed, if you press the 1 key or the (key), the cursor will be placed at the beginning of the display.When you want to change the displayed content, move the cursor to that position and enter the changed content. Enter.

After completing the change operation, press the ENTER key to program the display contents no matter where the kernel is located.

A program example is shown below.

Further, FIG. 5 shows the key operations when inputting the program described in "2" and the display at a predetermined time point.

In this example, three program lines are programmed, each having similar content, so after writing 100 lines, programming is performed according to the original plan.

For NO, 2, the manually entered contents are sequentially written from the beginning of the human output buffer 4, and the contents are written to the display memory and displayed.

NO, 3 is selected by pressing the ENTER key, since there is a line number at the beginning of the input/output buffer 4.
The contents of buffer 4 are stored in the appropriate location in the program memory, and then the contents of buffer 4 are displayed. At this time, the kernel is not displayed, and the colon is displayed after the number 100.
":" is displayed, indicating that the displayed contents are stored in the program memory.

For No. 4, when the 1 key or the Ne key is operated when the program is displayed and the cursor is not displayed, the cursor is placed at the beginning of the display and ":" is placed after the line number.
” changes to “space”.

For N085, part of the display of No. 4 is changed to "1", and the subsequent contents are not changed, so the cursor is moved using the 1 key.

For No. 6, the "A" in the display for No. 5 has been changed to "B".

For NO, 7, the ENTER key is used to manually store the contents of N016 in the program memory and display the contents again, but a colon ":" is displayed after the line number 200 and no cursor is attached.

No. 8 is the same as No. 4.

For NO, 9, change the "2" in the display of NO, 8 to "3",
Moving the cursor.

For NO and IO, change "=" to "?".

NO, I For I, even if the ENTER key is input when the kerful display position is in the middle, the contents of NO, IO are stored in the program memory. Then, the contents are displayed again.

As mentioned above, first fill buffer 4 with the ENTER code, then input the manually entered content using the keys, and press ENTER.
Do not input the ENTER code even if you press the E R key, and when storing the contents entered in the buffer into program memory, start from the beginning of the buffer and enter the ENTER code.
This is to store the contents up to the TER code position in the program memory. Also, when displaying the contents of a specified program line, after transferring the contents corresponding to that line from the program memory to buffer 4, fill the remaining part of the line in the buffer with the ENTER code. You can also press the ENTER key in the middle of a line to modify a part of it.

Other characteristic configurations of this embodiment are listed below.

■ If an error occurs during program execution, if you operate a specific key (↑ key or ↓ key) without changing the mode to "Program Edit", the program line where the error occurred will be displayed only while the specific key is pressed. The system also has a configuration in which a cursor is displayed at the location where the error occurred, allowing the user to know the cause of the error without having to switch modes.

■ The error point in ■ above will be canceled when it is cleared, re-run the program, or edit the program, and will be remembered otherwise, and the above ■ can be reproduced by operating a specific key again. That's what I'm trying to do.

■ When listing programs, a colon is displayed next to the line number to indicate whether or not the displayed contents match the contents of the program memory. The point is that it is made clear that the displayed contents match the contents of the program memory by making it disappear and becoming a space to indicate that the displayed contents do not match the contents of the program memory.

Effects> As explained in detail above, in the electronic calculator with program of the present invention, when an error occurs during program execution, by operating a specific key, the program line where the error occurred is displayed. This has the advantage that the line where the error occurs can be known with a simple operation, and subsequent measures can be taken quickly.

[Brief explanation of drawings]

FIG. 1 shows a system configuration of an embodiment of the present invention.
Figure 2 is a block diagram showing a part of the circuit of the CPUI shown in Figure 1, Figure 3), (B) is a flowchart showing the program in the same embodiment, and Figure 4. and FIG. 5 are diagrams showing key operations and displays performed based on the key operations in the same embodiment. Code 1: CPU, 2: ROM, 3: RAM, 4: Input/output buffer, 5: Key, 6: Display memory and notch) 1A,
7: Display body, 8: Instruction decoder, 9: Instruction register, l
O: Data buffer! 1: Register and flag, 12
: Address buffer, 13: Temporary register, 14
: Accumulator, 15: ALU, +6: Carry flip-flop, 17: S buffer, 18: Buffer, 19: Internal data bus.

Claims (1)

[Claims] 14? Based on the fixed key and the operation of the above specific key when an error occurs,
A programmable peep-type divider characterized by comprising means for displaying a program line in which an error has occurred on a display section;