17 Bit Software 2: Collection B

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Text File | 1978-02-11 | 9.5 KB | 445 lines

ABS Finds the absolute value of a numeric variable eg/abs(x) ALL AND Logical operator eg/if x=1 AND Y=2 then PRINT "x=1 and y=2 APPEND Mode of opening sequential file The file cannot be read from, but data can be added(appended) to the end eg/OPEN NAM$ FOR APPEND AS 1 AREA Draws a line between 2 points eg/AREA AREAFILL Fills a polygon drawn with AREA statements with the given colour eg/ AS Used in conjunction with some other commands eg/OPEN NAM$ FOR INPUT AS 1 ASC REturns the ASCII value of a character This is the opposite of CHR$ eg/a$=asc(96) ATN Finds the tangent BASE Used in the OPTION BASE statement See OPTION BEEP Makes a warning sound eg/BEEP BREAK Used with event trapping in response to the user using the CTRL-C key combination to stop a program eg/ CALL Used to invoke a subprogram eg/CALL subprogramname CDBL Converts a? CHAIN Runs a new program, without closing any open files eg/CHAIN programname CHDIR Changes the current directory Follow with a new directory name, eg/df0: df1: ram: etc. eg/CHDIR "df1:" CHR$ Returns the character with the given ASCII value Is the opposite to ASC eg/x=chr$(96) CINT Rounds a number off to an integer eg/cint(2.5) would equal CIRCLE Draws a circle with the centre at x,y and with a radius of r Options are to add aspect(height to width ratio) CLEAR Increases available memory by setting all variables to 0 or "" CLNG Converts a number to a long integer CLOSE Closes all files alternatively, you can close one specific file by giving a file number (The number the file was opened as)> eg/CLOSE 1 CLS Clears the current window and places the cursor in the top left hand corner COLLISION Used when an object(bob or sprite) collides with another object or the edge of the screen eg/ON COLLISION GOSUB label COLOR Sets the current background and foreground colours eg/COLOR 3,1 will mean that graphics and text will be drawn in COLOR 3 on a background with the COLOR 1. (Colours can be altered with PALETTE). COMMON Used in conjunction with the CHAIN statement Allows variables to be shared between the chaining program and the chained program eg/CHAIN program2 COMMON x CONT Continues a program that has been stopped with the STOP statement A menu item performs the same function A menu item performs the same function COS Calcualtes the COS of a number CSNG CSRLIN Finds the current line of the cursor CVD Converts CVS Converts DATA Creates date items DATE$ calculates the curent date DECLARE Used with LIBRARY DEF defines DEFDBL defines DEFINT defines DEFLNG defines DEFSNG defines DEFSTR defines DELETE DEletes all the lines between DIM Dimensions(i.e. creates) an array ELSE Used in conjunction with the CHAIN statement ELSEIF Used in conjunction with the CHAIN statement END Ends a program(optional) EOF End of file EQV Logical operator, equivalent to ERASE Deletes an array which can later be redimensioned ERL Used in conjunction with the CHAIN statement ERR Used in conjunction with the CHAIN statement ERROR Used in conjunction with the CHAIN statement EXIT Leaves a subprogram EXP Exponential of a number FIELD Used in conjunction with random files FILES Displays the files on the disk FIX Rounds off a number FN create your own function FOR A loop FRE Calculates th eamount of free memory in bytes FUNCTION Used with GET Stores a graphic in an array which can later be reused with PUT GOSUB Performs the given subroutine then returns to the line after the GOSUB GOTO Branches to aline or label HEX$ calculates hexadecimal number IF Conditiob\nal IMP LOgical operator. implies INKEY$ Waits for the user to press a key INPUT Asks the user to type in soimething at the keyboard(and press return) INPUT$ Reads characters from a tsring INSTR Searchs for a string within a string INT Rounds off a number to form an integer KILL Delates a file and its info.file eg/KILL "filename" LBOUND Finds the lower boundary of an array Useful when using arrays in a subprogram LEFT$ This returns the left most portion of a string eg/LEFT$("house",1) would be "h" LEN Calculates the length of a string eg/LEN("house") would be 5 LET Assigns a value to a string or numeric variable Normally the word LET is omitted LIBRARY Used to access libraries LINE Draws a line from point x1,y1 to x2,y2 Can be used a draw a rectangle(which may be coloured in) LIST A menu item performs the same function Probably most useful when used in direct mode LLIST Prints the listing of a program on the printer LOAD A menu item performs the same function Probably most useful when used in direct mode LOC Location within a file LOCATE This moves the cursor to the position you want LOF REturns the length of a file in bytes LOG Finds the log of a nmber LPOS Same as POS, but is in relation to the printer LPRINT Prints a line on the printer LSET Used in conjunction with the MENU Allows the creation of menus MERGE Joins a program that has been saved in ASCII format Probably most useful when used in direct mode MID$ This returns the middle of a string You can set the starting position of the string and its length eg/MID$("house",3,1) would be "u" MKD$ Makes decimal MOD MOdulo arithmatic MOUSE Returns information about the mouse NAME Renames a file to the new name NEW A menu item performs the same function NEXT Used in conjunction with the NOT OBJECT.AX object OBJECT.AY object OBJECT.CLIP object OBJECT.CLOSE object OBJECT.HIT object OBJECT.OFF object OBJECT.ON object OBJECT.PLANES object OBJECT.PRIORITY object OBJECT.SHAPE object OBJECT.START object OBJECT.STOP object OBJECT.VX object OBJECT.VY object OBJECT.X object OBJECT.Y object OCT$ Octal number OFF Used in conjunction with the ON Used in conjunction with the OPEN A menu item performs the same function OR OUTPUT Used in conjunction with the PAINT paints the given colour starting at the point x,y until reaching the same colour or the edges of the window PALETTE Alters the composition of the given colour PEEK Looks into the given address PEEKL ? POINT Returns the colour of the pixel at the point x,y POKE Writes into the givenaddress POKEL ? POS Fiunds the current column of the cursor PRESET Inverts colours in PUT command PRINT prints text to the screen PSET puts graphic to scren normally PTAB Moves cursor along x number of pixels PUT places a graphoic onthe screen with has ben previously been stored with the GET statement RANDOMIZE Reseeds the random number generator READ Reads the next data item REM Inserts a remark RESTORE Used in conjunction with the READ statement RESUME Used in conjunction with error trapping RETURN Used in conjunction with the GOSUB statement RIGHT$ This returns the right most portion of a string eg/RIGHT$("house",1) would be "e" RND this generates a random number between 0 and .1 RSET Used in conjunction with random files This right justifies the field RUN A menu item performs the same function Probably most useful when used in direct mode SADD Used to access machine subroutines SAVE A menu item performs the same function SAY Used in conjunction with TRANSLATES Allows the Amiga to talk SCREEN Allows the creation of a custom screen You can have up to 4 screens in addition to the original screen eg/screen 1,640,256,3,2 createsScreen number 1 with a width of 640 pixels, a height of 256 pixels, 3 bitplanes(allowing 8 colours) and medium resolution SCROLL Moves a rectangular segment of the screen in any direction you like eg/SCROLL(x1,y1)-(x2,y2) SGN Sets the sign of a number SHARED Used in conjunction with DIM Allows an array to be shared with a subprogram SIN Finds the SIN of a number eg/sin SLEEP Causes the program to stop until the user presses a key or clicks a mouse button SOUND Used to create sounds SPACE$ Prints blank spaces Useful for overwriting text SPC Prints spaces SQR Finds the square root of a number STATIC Used in conjunction with the SUB command Denotes the beginning of a Subprogram eg/SUB.subprogramname..STATIC STEP Used in conjunction with a number of different statements eg/LINE,CIRCLE,AREA,PAINT Means to the new co-ordinate is relative to the last eg/ STICK Used when a joystick is being used STOP Stops the program, but does not end it, it can be restarted with CONT A menu item performs the same function STR$ Changes a number into a string and creates a leading space eg/STR$(2) would equal " 2" STRIG Used when a joystick is being used REturns a value to check whether the trigger is currently being pressed STRINGS REpeats the printing of a specific character SUB Used in conjunction with the STATIC statement SWAP Chnges the values of two variables SYSTEM Ends the program and returns to the workbench TAB Moves the next print position TAN Calculates the tangent of a number THEN Used in conjunction with the IF statement TIME$ Calculkates the current time in the format hh:mm:ss TIMER Shows the number of seconds that have passed since midnight TO Used in conjunction with the TRANSLATES Used in conjunction with the SAY statement TROFF A menu item performs the same function TRON A menu item performs the same function UBOUND Finds the upper boundary of an array Useful when using arrays in a subprogram UCASE$ Converts a string to uppercase USING Part of the PRINT USING statement eg/PRINT USING VAL Converts a string into a variable eg/VAL("6") would return 6 VAL("a") would return 0 VARPTR Used with acessing machine language subroutines WAIT Used in conjunction with the SOUND statement WAVE Used in conjunction with the SOUND statement WEND Used in conjunction with the WHILE statement Closes the loop WHILE Used in conjunction with the WEND statement Starts the loop WIDTH Sets the width of text that will be printed to the screen WINDOW Creates a custom window XOR Logical operator, mutually exclusive