BASIC:BASIC

BASIC

Tandy Color Computers contain a modular interpreter which understands a superset of the Beginner's All-purpose Symbolic Instruction Code (BASIC) programming language.

There are up to four core modules available in Read-Only Memory (ROM) that detect and link to each other when combinations of these ROMs exist in a Color Computer.

MODULES

Color BASIC - the core module present in all models of Color Computer

Extended Color BASIC (ECB) - a graphics and sound package which was optional in the Color Computer 1 and 2.

Disk Extended Color BASIC (DECB) - Disk commands present when a disk controller cartridge is plugged in

Super Extended Color BASIC (SECB) - Present in the Color Computer 3 only and includes Color BASIC and Extended Color BASIC in lower memory - links to Disk BASIC ROM if a cartridge is present.

KEYWORDS

BASIC Keywords (sortable)

Module	Keyword	Description
CB	ABS	Get absolute value of a signed number
CB	BASIC:+	Addition operator
CB	BASIC:AND	Boolean / Logical AND operator
CB	BASIC:ASC	ASCII code of first letter of string
ECB	BASIC:ATN	Returns arctangent in radians
SECB	BASIC:ATTR	Set the display attributes of a high-resolution text screen
CB	BASIC:AUDIO	Control the audio source
DECB	BASIC:BACKUP	Duplicates the contents of the disk in the source drive on the disk in the destination drive
SECB	BASIC:BRK	Jump to a line number when the BREAK key is pressed
SECB	BASIC:BUTTON	Return if a Joystick Button is being pressed or not
CB	BASIC:CHR$	Convert number to Control, ASCII, or graphics code string
ECB	BASIC:CIRCLE	Draws a circle with center at point (x,y) radius r, specified color c and height/width ratio
CB	BASIC:CLEAR	Clear RAM for string space
CB	BASIC:CLOAD	Cassette load
CB	BASIC:CLOSE	Close files
CB	BASIC:CLS	Clear screen
SECB	BASIC:CMP	Set palette to composite defaults
ECB	BASIC:COLOR	Sets foreground and background color
CB	BASIC:CONT	Continue the program from a stop
DECB	BASIC:COPY	Copies the contents of filename1 to filename2
ECB	BASIC:COS	Return cosine of an angle given in radians
CB	BASIC:CSAVE	Cassette save
DECB	BASIC:CVN	Convert a 5-byte coded string created by MKN$ back to the number it represents
CB	BASIC:DATA	Store data within a program
ECB	BASIC:DEF	Defines numeric function
ECB	BASIC:DEL	Deletes program lines
CB	BASIC:DIM	Set aside memory for arrays
DECB	BASIC:DIR	Displays a directory of the disk in the drive you specify
CB	/	Division operator
ECB	BASIC:DLOAD	Loads BASIC program at specified baud
DECB	BASIC:DOS	With the OS-9 system diskette in drive 0, the DOS command boots the OS-9 operating system
ECB	BASIC:DRAW	Draws a line beginning at specified starting point of specified length and color
DECB	BASIC:DRIVE	Changes the default drive to the drive you specify
DECB	BASIC:DSKI$	Inputs data from a particular sector with in a particular track on the disk in the drive you specify
DECB	BASIC:DSKINI	Formats a disk in the drive you specify
DECB	BASIC:DSKO$	Writes string data on sector, track, and drive number you specify
ECB	BASIC:EDIT	Allows editing of program line
CB	BASIC:END	The end of the program
CB	BASIC:EOF	End of file
CB	BASIC:ELSE	Alternate conditional statement
CB	=	Equality operator
SECB	BASIC:ERLIN	Returns the BASIC line number where an error has occurred
SECB	BASIC:ERR	Jump to a line number when an error occurs
SECB	BASIC:ERRNO	Returns the BASIC error number for the error that has occurred
CB	BASIC:EVAL	Evaluate a numeric expression
CB	BASIC:EXEC	EXECute code at address
CB	BASIC:EXP	Generates ?SN in Color BASIC, implemented in Extended Color BASIC
ECB	BASIC:EXP	Returns natural exponential of number
DECB	BASIC:FIELD	Organizes the space within a direct access buffer into fields
DECB	BASIC:FILES	Tell the computer the number of buffers to reserve in memory
ECB	BASIC:FIX	Returns truncated (whole number) value
CB	BASIC:FOR	Start a loop
DECB	BASIC:FREE	Returns to the number of free granules on the disk in the drive you specify
ECB	BASIC:GET	Reads the graphic contents of a rectangle into an array for future use by PUT
CB	BASIC:GO	Jump to line number
CB	>	Greater Than operator
SECB	BASIC:HBUFF	Reserves an area in memory for high-resolution graphics
SECB	BASIC:HCIRCLE	Draws a circle on the high-resolution graphics screen
SECB	BASIC:HCLS	Clear the high-resolution graphics screen to a specified color
SECB	BASIC:HCOLOR	Set foreground and background color on the high-resolution graphics screen
SECB	BASIC:HDRAW	Draws on the high-resolution screen from a command string
ECB	BASIC:HEX$	Computes hexadecimal value
SECB	BASIC:HGET	Stores a rectangle from the high-resolution screen into a buffer
SECB	BASIC:HLINE	Draws a line on the high-resolution graphics screen
SECB	BASIC:HPAINT	Paints an area on the high-resolution graphics screen
SECB	BASIC:HPOINT	Returns information on point x,y from the high-resolution graphics screen
SECB	BASIC:HPRINT	Prints a message on the high-resolution graphics screen
SECB	BASIC:HPUT	Copies graphics from a buffer to a rectangle on the high-resolution graphics screen
SECB	BASIC:HRESET	Resets a point on the high-resolution graphics screen to the background color
SECB	BASIC:HSCREEN	Select and clear high-resolution graphics screen
SECB	BASIC:HSET	Set point x,y on the high-resolution graphics screen to color c
SECB	BASIC:HSTAT	Returns information regarding the high-resolution text screen cursor
CB	BASIC:IF	Start a conditional check
CB	BASIC:INKEY$	Get a key
CB	BASIC:INPUT	Read a line of text at a time
ECB	BASIC:INSTR	Searches for the first occurrence of target string
CB	BASIC:INT	Convert a number to an integer
CB	BASIC:JOYSTK	Read and report joysticks
DECB	BASIC:KILL	Deletes the filename you specify from the disk directory
CB	BASIC:LEFT$	Left part of a string
CB	BASIC:LEN	Length of a string
CB	<	Less Than operator
CB	BASIC:LET	Assign a variable
ECB	BASIC:LINE	Draw a line from (x1,y1) to (x2,y2)
CB	BASIC:LIST	List program to screen
CB	BASIC:LLIST	List program to printer
DECB	BASIC:LOAD	Loads the specified program file into memory from disk
SECB	BASIC:LOCATE	Move the high-resolution text screen cursor to position x,y
DECB	BASIC:LOC	Returns the current record number of the buffer you specify
DECB	BASIC:LOF	Returns the highest-numbered record of the buffer you specify
ECB	BASIC:LOG	Returns natural logarithm
SECB	BASIC:LPEEK	Return the contents of a virtual memory location $00000 - $7FFFF
SECB	BASIC:LPOKE	Stores a value in a virtual memory location $00000 - $7FFFF
DECB	BASIC:LSET	Left-justifies the data within the field you specify
CB	BASIC:MEM	Free memory
DECB	BASIC:MERGE	Loads the specified program file from disk and merges it with the program that exists in memory
CB	BASIC:MID$	Middle of a string
DECB	BASIC:MKN$	Convert a specified number into a 5-byte coded string for storage in a formatted disk file
CB	BASIC:MOTOR	Tape drive motor control
CB	*	Multiplication operator
CB	BASIC:NEW	Initialize the BASIC memory map
CB	BASIC:NEXT	End of a loop
CB	BASIC:NOT	Boolean / Logical negation
CB	BASIC:OFF	AUDIO and MOTOR control token
CB	BASIC:ON	Start of multi-way branch
CB	BASIC:OPEN	Open a file
CB	BASIC:OR	Boolean / Logical OR operator
ECB	BASIC:PAINT	Paints graphic screen starting at a point (x,y) withh specified color c stopping at border b
SECB	BASIC:PALETTE	Store a color code into a palette register, or reset palette for CMP or RGB defaults
ECB	BASIC:PCLEAR	Reserves b number of 1.5K graphics memory pages
ECB	BASIC:PCLS	Clears screen with specified color c
ECB	BASIC:PCOPY	Copy graphics from source page to destination page
CB	BASIC:PEEK	Read a value from a memory address
ECB	BASIC:PLAY	Plays music of specific note, octave, note-length, tempo, pause
ECB	BASIC:PMODE	Selections resolution and first memory page
CB	BASIC:POINT	Check color of a semigraphics pixel
CB	BASIC:POKE	Write a value to a memory address
ECB	BASIC:POS	Returns current print position
ECB	BASIC:PPOINT	Tests whether specified graphics cell is on or off
ECB	BASIC:PRESET	Reset a point to background color
CB	BASIC:PRINT	Write to the screen
ECB	BASIC:PSET	Sets a specified point (x,y) to specified color c
ECB	BASIC:PUT	Stores graphics from source into start/end rectangle on the screen
CB	BASIC:READ	Read a piece of data
CB	BASIC:REM	Comments or remarks - FIXME Else uses this too?
DECB	BASIC:RENAME	Renames a disk file
ECB	BASIC:RENUM	Allows program line renumbering
CB	BASIC:RESET	Clear a semigraphics pixel
CB	BASIC:RESTORE	Start back at the first DATA item
CB	BASIC:RETURN	Return from a subroutine
SECB	BASIC:RGB	Set palette to RGB defaults
CB	BASIC:RIGHT$	Right part of a string
CB	BASIC:RND	Pseudo-random number generator
DECB	BASIC:RSET	Right-justifies the data within the field you specify
CB	BASIC:RUN	Start the program running
DECB	BASIC:SAVE	Saves filename on disk
ECB	BASIC:SCREEN	Selects either graphics (1) or text (0) screen and color-set (0 or 1)
CB	BASIC:SET	Draw a semigraphics pixel
CB	BASIC:SGN	Get the sign of a number positive or negative
CB	BASIC:SIN	Sine of an angle
CB	BASIC:SKIPF	Skip tape file
CB	BASIC:SOUND	Beep the speaker
ECB	BASIC:SQR	Returns the square root of a number
CB	BASIC:STEP	FOR loop control
CB	BASIC:STOP	Stop the program at the current line
CB	BASIC:STR$	Convert a number to a string
ECB	BASIC:STRING	Returns a string of characters of specified length
CB	BASIC:SUB	Completion token for GOSUB
CB	-	Subtraction operator
CB	BASIC:TAB	Tabulation
ECB	BASIC:TAN	Returns tangent of angle given in radians
CB	BASIC:THEN	Completion token for IF
ECB	BASIC:TIMER	Returns contents or allows setting of timer
CB	BASIC:TO	Token for TO in GO TO
ECB	BASIC:TROFF	Turns off program tracer
ECB	BASIC:TRON	Turns on program tracer
DECB	BASIC:UNLOAD	Close any open files on the disk in the drive you specify
CB	BASIC:USR	User defined function
CB	BASIC:VAL	Convert a string to a number
ECB	BASIC:VARPTR	Returns address of pointer to the specified variable
DECB	BASIC:VERIFY	Turns the verify function on or off
SECB	BASIC:WIDTH	Set the text screen to a resolution in character width
DECB	BASIC:WRITE	Writes the data to the buffer you specify