Make the terminal running the program ring its "bell".
On modern terminal emulators, this may be done by playing some other sound which might or might not be configurable, or by flashing the title bar or inverting the colors of the screen, but was classically a physical bell within the terminal. It is usually used to indicate a problem where a wrong character has been typed.
In most terminals, if the Bell character (ASCII code7, \a in C) is printed by the program, it will cause the terminal to ring its bell. This is a function of the terminal, and is independent of the programming language of the program, other than the ability to print a particular character to standard out.
print("\a").cr6800.tfbel6800.obj,AP1.lfbel6800;=====================================================;; Ring the Bell for the Motorola 6800 ;; by barrym 2013-03-31 ;;-----------------------------------------------------;; Rings the bell of an ascii terminal (console) ;; connected to a 1970s vintage SWTPC 6800 system, ;; which is the target device for this assembly. ;; Many thanks to: ;; swtpc.com for hosting Michael Holley's documents! ;; sbprojects.com for a very nice assembler! ;; swtpcemu.com for a very capable emulator! ;; reg a holds the ascii char to be output ;;-----------------------------------------------------;outeee=$e1d1;ROM: console putchar routine.or$0f00;-----------------------------------------------------;mainldaa#7;Load the ascii BEL charjsrouteee; and print itswi;Return to the monitor.en
This is how it'ssupposed to be done:
.modelsmall.stack1024.data.codestart:movah,02h;character outputmovdl,07h;bell codeint21h;call MS-DOSmovax,4C00h;exitint21h;return to MS-DOSendstart
But I couldn't hear anything on DOSBox when doing this.
This version takes direct control over the PC's beeper to produce a tone wheneverBEL is passed toPrintChar.
.modelsmall.stack1024.data.codestart:moval,7callPrintCharmovax,4C00hint21h;return to DOS;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;PrintChar:;Print AL to screenpushcxpushbxpushaxcmpal,7jneskipBELcallRingBelljmpdone_PrintCharskipBEL:movbl,15;text color will be whitemovah,0Ehint10h;prints ascii code stored in AL to the screen (this is a slightly different putc syscall)done_PrintChar:popaxpopbxpopcxret;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;RingBell:pushaxpushcxpushdx;if BEL is the argument passed to PrintChar, it will call this function and not actually print anything or advance the cursor;this uses the built-in beeper to simulate a beepmoval,10110110b;select counter 2, 16-bit modeout43h,almovax,0C00h;set pitch of beep - this is somewhat high but isn't too annoying. Feel free to adjust this valueout42h,almoval,ahout42h,almoval,3out61h,al;enable sound and timer modemovcx,0FFFFhmovdx,0Fh;set up loop countersbeepdelay:;delay lasts about half a secondloopbeepdelaymovcx,0FFFFhdecdxjnzbeepdelaymoval,0;muteout61h,al;cut the sound; mov bl,15; mov ax,0E20h ;print a spacebar to the terminal; int 10h ;uncomment these 3 lines if you want the BEL to "take up space" in the output streampopdxpopcxpopaxretendstart
PROC Wait(BYTE frames) BYTE RTCLOK=$14 frames==+RTCLOK WHILE frames#RTCLOK DO ODRETURNPROC Main() BYTE i,n=[3], CH=$02FC ;Internal hardware value for last key pressed PrintF("Press any key to hear %B bells...",n) DO UNTIL CH#$FF OD CH=$FF FOR i=1 TO n DO Put(253) ;buzzer Wait(20) OD Wait(100)RETURNScreenshot from Atari 8-bit computer
withAda.Text_IO;useAda.Text_IO;withAda.Characters.Latin_1;procedureBellisbeginPut(Ada.Characters.Latin_1.BEL);endBell;
beepprint"\a"
beep()
Seebeep() in the Asymptote manual.
fileappend,`a,*
This requires that you compile the exe in console mode (see Lexikos script to change this) or pipe the file through more: autohotkey bell.ahk |more
BEGIN{print"\a"# Ring the bell}
10 PRINT CHR$ (7);
PRINTCHR$(253)
You can't see it, but the bell character (Control G) is embedded in what looks like an empty string on line 10.
10 PRINT "";: REM ^G IN QUOTES 20 END
PING
10PRINTCHR$(7)
The ZX Spectrum had a speaker, rather than a bell. Here we use middle C as a bell tone, but we could produce a different note by changing the final zero to a different value.
BEEP0.2,0
Source:Here
@echo offfor/f%%.in('forfiles /m "%~nx0" /c "cmd /c echo 0x07"')dosetbell=%%.echo%bell%
Assuming that the platform the program is running on rings the bell when CHR$7 is sent to the VDU driver:
VDU7
print"\a"
_7}
7,@
The 2-byte BLC program20 07 in hex outputs ASCII code 7.
Run Bracmat in interactive mode (start Bracmat without command line arguments) and enter the following after the Bracmat prompt{?}:
\a
Alternatively, run Bracmat non-interactively. In DOS, you write
bracmat "put$\a"
In Linux, you do
bracmat 'put$\a'
Assuming the output stream is connected to a TTY, printing BEL should ring its bell.
I+++++++-+-+.
#include<stdio.h>intmain(){printf("\a");return0;}
Inside a function:
// the simple version:System.Console.Write("\a");// will beepSystem.Threading.Thread.Sleep(1000);// will wait for 1 secondSystem.Console.Beep();// will beep a second timeSystem.Threading.Thread.Sleep(1000);// System.Console.Beep() also accepts (int)hertz and (int)duration in milliseconds:System.Console.Beep(440,2000);// default "concert pitch" for 2 seconds
#include<iostream>intmain(){std::cout<<"\a";return0;}
(println(char7))
Using the standard screen section:
IDENTIFICATIONDIVISION.PROGRAM-ID.ring-terminal-bell.DATADIVISION.SCREENSECTION.01ringerBELL.PROCEDUREDIVISION.DISPLAYringer.STOPRUN.ENDPROGRAMring-terminal-bell.
Using the ASCII code directly:
*> Tectonics: cobc -xj ring-terminal-bell.cob --std=cobol85IDENTIFICATIONDIVISION.PROGRAM-ID.ring-ascii-bell.ENVIRONMENTDIVISION.CONFIGURATIONSECTION.OBJECT-COMPUTER.PROGRAMCOLLATINGSEQUENCEISASCII.SPECIAL-NAMES.ALPHABETASCIIISSTANDARD-1.PROCEDUREDIVISION.DISPLAYFUNCTIONCHAR(8)WITHNOADVANCING. *> COBOL indexes starting from 1.STOPRUN.ENDPROGRAMring-ascii-bell.
IDENTIFICATIONDIVISION.PROGRAM-ID.mf-bell.DATADIVISION.WORKING-STORAGESECTION.01bell-codePIC XUSAGECOMP-XVALUE22.01dummy-paramPIC X.PROCEDUREDIVISION.CALLX"AF"USINGbell-code,dummy-paramGOBACK.ENDPROGRAMmf-bell.
(formatt"~C"(code-char7))
voidmain(){importstd.stdio;writeln('\a');}
7P
programTerminalBell;{$APPTYPE CONSOLE}beginWriteln(#7);end.
print("\u0007")(ding);; ring the bell(beep);; the same thing
On a tty or in-batch mode this emits a BEL character. In a GUI it does whatever suits the window system. Variablesvisible-bell andring-bell-function can control the behaviour.
beep was originally calledfeep, but that changed, recently :-)
Fri Dec 13 00:52:16 1985 Richard M. Stallman (rms at prep)* subr.el: Rename feep to beep, a more traditional name.
openSystemConsole.Beep()
USE:io"\u{7}"print
Or:
USING:iostrings;71stringprint
7emit
#bellemit
^Gemit
' FB 1.05.0 Win64Print!"\a"Sleep
beephandleevents
print"\007"
packagemainimport"fmt"funcmain(){fmt.Print("\a")}
println'\7'
main=putStr"\a"
Works on both Icon and Unicon.
proceduremain()write("\7")# ASCII 7 rings the bell under Bashend
This j sentence reads "Seven from alphabet."
7{a.NB. noun a. is a complete ASCII ordered character vector.
publicclassBell{publicstaticvoidmain(String[]args){java.awt.Toolkit.getDefaultToolkit().beep();//orSystem.out.println((char)7);}}
7 putch.
println("This should ring a bell.\a")
This should ring a bell.
And it does, provided that the bell is enabled on your terminal.
// version 1.1.2funmain(args:Array<String>){println("\u0007")}
fn.println(fn.toChar(7))
stdoutnl('\a')
type char 7
print("\a")
M2000 Environment has own console (not the one provided from system). Console used for graphics, and has 32 layers for text or and graphics and as sprites too. We can alter the console by code, moving to any monitor, changing font, font size and, line space. Also there is a split function, where the lower part can scroll, and the upper part used as header (we can write/draw in the upper part also, but CLS - clear screen- statement clear only the lower part).
Async beep. If another start while beeps (it is a bell), then stop
Module CheckIt { After 300 {beep} Print "Begin" for i=0 to 100 { wait 10 Print i } Print "End"}CheckItExecution stop to play tone
Tone (1khz)Tone 200 (1 kgz 200 ms)Tone 200, 5000 (5khz. 200ms)
Module CheckIt { After 300 {Tone 200} Print "Begin" for i=0 to 100 { wait 10 Print i } Print "End"}CheckItExecution stop to play tune
Tune melody$Tune duration_per_note, melody$
Module CheckIt { After 300 {Tune 300, "C3BC#"} Print "Begin" for i=0 to 100 { wait 10 Print i } Print "End"}CheckItPlay a score in each of 16 voices (async, programming internal midi, problem with async in Wine Linux). We can make a piano using keyboard and play/score commands.
Module CheckIt { Score 1, 500, "c@2dc @2ef" Play 1, 19 ' attach a music score to an organ Print "Begin" for i=0 to 100 { wait 10 Print i } Print "End" \\ stop play, remove this and music continue, in console prompt Play 0}CheckItThere are other statements like Sound, and Background filename$ to play background music.
Print["\007"]
write $char(7)
print chr(7)
usingSystem.Console;moduleBeep{Main():void{Write("\a");System.Threading.Thread.Sleep(1000);Beep();System.Threading.Thread.Sleep(1000);Beep(2600,1000);// limited OS support}}
/* NetRexx */optionsreplaceformatcommentsjavacrossrefsymbolsbinaryrunSample(arg)return--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~methodrunSample(arg)privatestaticdoBEL=8x07jtk=java.awt.toolkit.getDefaultToolkit()say'Bing!'(RexxBEL).d2cThread.sleep(500)say'Ding\x07-ding\u0007!'Thread.sleep(500)say'Beep!'jtk.beep()catchex=Exceptionex.printStackTrace()endreturn
echo"\a"
char bel
or
print "\a"
7->As(Char)->PrintLine();
let()=print_string"\x07"
\\ Ringing the terminal bell.\\ 8/14/2016 aevStrchr(7) \\ press <Enter>
print(Strchr(7)); \\ press <Enter>
(11:12) gp > Strchr(7) \\ press <Enter>%6 = ""(11:13) gp > print(Strchr(7)); \\ press <Enter>(11:14) gp >
See Delphi
##Console.Beep(440,1000);
print"\a";
puts(1,"\x07")
Ineffective under pwa/p2js - just displays an unknown character glyph.
<?phpecho"\007";
(beep)
declare bell character (1); unspec (bell) = '00000111'b; put edit (bell) (a);
The following will only work in a PostScript interpreter that sends output to a terminal. It will very likely not make a printer beep.
(\007)print
One can either use the ASCIIBEL character which only works in a console (i.e. not in a graphical PowerShell host such as PowerShell ISE):
"`a"
or use the .NETConsole class which works independent of the host application:
[Console]::Beep()
Print(#BEL$)
In Python 2.7.x:
print"\a"
In Python 3.x:
print("\a")
On some platforms the bell will not ring until the output buffer is flushed e.g. by a cr/lf.
ding
alarm()
#langracket(require(planetneil/charterm:3:0))(with-charterm(void(charterm-bell)))
(formerly Perl 6)
print7.chr;
7 putc
There is no standard REXX built-in function to handle the sounding of the bell or a PC's speaker.
However, some REXX interpreters have added a non-standard BIF.
/*REXX program illustrates methods to ring the terminal bell or use the PC speaker. *//*╔═══════════════════════════════════════════════════════════════╗ ║ ║ ║ Note that the hexadecimal code to ring the terminal bell ║ ║ is different on an ASCII machine than an EBCDIC machine. ║ ║ ║ ║ On an ASCII machine, it is (hexadecimal) '07'x. ║ ║ " " EBCDIC " " " " '2F'x. ║ ║ ║ ╚═══════════════════════════════════════════════════════════════╝*/if3=='F3'thenbell='2f'x/*we are running on an EBCDIC machine. */elsebell='07'x/* " " " " " ASCII " */saybell/*sound the bell on the terminal. */saycopies(bell,20)/*as above, but much more annoying. *//*╔═══════════════════════════════════════════════════════════════╗ ║ ║ ║ Some REXX interpreters have a built-in function (BIF) to ║ ║ to produce a sound on the PC speaker, the sound is specified ║ ║ by frequency and an optional duration. ║ ║ ║ ╚═══════════════════════════════════════════════════════════════╝*//* [↓] supported by Regina REXX: */freq=1200/*frequency in (nearest) cycles per second. */callbeepfreq/*sounds the PC speaker, duration= 1 second.*/ms=500/*duration in milliseconds. */callbeepfreq,ms/* " " " " " 1/2 " *//* [↓] supported by PC/REXX & Personal REXX:*/freq=2000/*frequency in (nearest) cycles per second. */callsoundfreq/*sounds PC speaker, duration= .2 second. */secs=.333/*duration in seconds (round to nearest tenth).*/callsoundfreq,secs/* " " " " 3/10 " *//*stick a fork in it, we're done making noises.*/
see char(7)
print"\a"
fnmain(){print!("\x07");}
java.awt.Toolkit.getDefaultToolkit().beep()
$ include "seed7_05.s7i";const proc: main is func begin write("\a"); end func;print"\a";
$+++++++.#
val()=print"\a"
puts-nonewline"\a";flushstdout
#!/bin/sh# Ring the terminal bell# echo "\a" # does not work in some shellstputbel
System.print("\a")
;Assemble with: tasm; tlink /t .model tiny .code org 100h ;.com files start herestart: mov ah, 02h ;character output mov dl, 07h ;bell code int 21h ;call MS-DOS ret ;return to MS-DOS end start
code ChOut=8;ChOut(0,7)
print("\x07");