128 COMMAND CHART BASIC 7.0                 

BASIC 7.0 Keywords
==================
*Preliminary list of the Commodore 128 computer keywords.
*Taken from a preliminary description of BASIC 7.0.
*Commodore Business Machines may have made small changes from this list!

Command Description:

APPEND     - Direct DOS command, append a file
AUTO       - Automatic line numbering
BACKUP     - Direct DOS command, backup disk on dual drive.
BEGIN/BEND - extension of the Boolean IF/THEN logic for more than 1 line.
BLOAD      - Binary Load to any memory location
BOOT       - Load and execute program
BSAVE      - Binary Save from any memory location
COLLECT    - DOS Validate command
CONCAT     - DOS Concatenate command
CMD        - Redirect screen output
CONT       - Continue
COPY       - Direct DOS Copy command
DELETE     - Deletes line numbers or blocks of lines from a program.
DIRECTORY  - DOS Directory displayed
DLOAD      - Load from Disk
DSAVE      - Save to Disk
DVERIFY    - Verify Disk File
HEADER     - DOS command to format diskette
HELP       - shows line where error occurred
KEY        - Define or list Function Keys
LIST       - List BASIC program
LOAD       - Load program from specified device
MONITOR    - enter the Commodore 128 Machine Language Monitor
MOVESHAPE  - 
NEW        - clear memory
PLAY       - executes music like PRINT format
RENAME     - Direct DOS command to rename a file
RENUMBER   - renumber lines of BASIC program
RUN        - execute BASIC program
RWINDOW    - function that returns specific information about the current
             console display enviornment
SAVE       - save program to specified device
SCRATCH    - Direct DOS command to scratch a file
SLEEP      - *
             *(I need some of THAT!)
SOUND      - sound output command
VERIFY     - verify program from specified device
WIDTH      - sets widths of lines drawn using BASIC's graphiic commands
WINDOW     - defines window


Statement Description:

BANK       - alter bank
BOX        - draw a box
CHAR       - display characters at specified screen location
CIRCLE     - draws a circle
CLOSE      - closes file
CLR        - clear program variables
COLLISION  - sprite collision handling definition
COLOR      - defines colors for background, foreground, border, multicolor,
etc
DATA       - define data to  be used in program
DCLEAR     - DOS command to clear all open channels on disk drive
DCLOSE     - closes disk file(s)
DEF FN     - Define Function for complex calculations
DIM        - Dimensioning an Array
DO/LOOP/WHILE/UNTIL/EXIT 
           - powerful program looop definition and control
DOPEN      - open disk file
DRAW       - Draw lines
END        - end of program
ENVELOPE   - define ADSR
FILTER     - define sound filter
FOR/TO/STEP/NEXT
           - program loop definition and control
GET        - Get character Input from the keyboard-no waiting
GETKEY     - Get character from keyboard-while waiting
GET#       - Get character from a previously opened device or file
GOSUB      - execute subroutine
GOTO/GO TO - transfer program execution to specified line number
GRAPHIC    - select graphic mode
IF/THEN/ELSE - conditional program execution
INPUT      - proompt on screen for input from keyboard
INPUT#     - Input data from file
LET        - infrequently used keyword used with assignment statements
LOCATE     - position graphics pixel cursor on screen
MOVSPR     - Move or locate sprite
ON         - conditional branching
OPEN       - open file for I/O
PAINT      - fill area with color
POKE       - change data in RAM
PRINT      - output to text screen
PRINT#     - output to files
PRINT USING- output using format
PUDEF      - redefine symbols in PRINT USING statements
READ       - read data from DATA statements
RECORD     - adjust relative file pointers
REM        - add explantory text to program listing
RESTORE    - reposition READ pointer at specified DATA statement!
RESUME     - define program execution after TRAP
RETURN     - return from subroutine
RREG       - define register values on return from SYS call
SCALE      - alter scaling in graphics mode
SCNCLR     - clear screen
SPRITE     - set up sprite attributes
SSHAPE/GSHAPE - save/retrive shapes using strings
STOP       - halt program execution
SYS        - execute machine language subroutine at specified address
TEMPO      - define note duration
TRAP       - handle error processing
TRON       - BASIC program TRACE enable
TROFF      - BASIC program TRACE dissable
VOL        - define output level of sound
WAIT       - halt program execcutions until data condition satisfied


Function Description:

ABS        - absolute value
ASC        - returns CBM ASCII code for characters
ATN        - returns angle whose tangent is X radians
BUMP       - returns sprite collision information
CHR$       - returns ASCII character for specified CBM ASCII code
COS        - returns cosine for angle of X radians
DEC        - returns decimal value of hexadecimal number string
ERR$       - returns string describing error condition
EXP        - return value of an approximation of e (2.7182713) raised to the X power
FNxx       - returns value from user defined function
FRE        - returns number of unused bytes in memory
HEX$       - returns hexadecimal number string from decimal number
INSTR      - returns position of string l in string 2
INT        - returns integer form of floating point value
JOY        - returns position of joystick and fire button state
LEFT$      - returns N leftmost characters of a string
LEN        - returns length of string
LOG        - returns natural log
MID$       - return substring froma larger string
PEEK       - returns content at specified memory location
PEN        - returns X and Y coordinates of light pen
POS        - returns character cursor position on line
POT        - returns value of game-paddle potentiometer
RND        - returns random number
RCLR       - returns color of color source
RDOT       - returns current position or color of pixel cursor
RGR        - returns current graphic mode
RIGHT$     - returns substring from rightmost end of a string
RSPRITE    - returns sprite attributes
RSPCOLOR   - check what sprite multi-color values last set.
RSPPOS     - check speed and position of sprite
SGN        - return sign of argument
SIN        - return sine of argument
SPC        - adds space characters to output
SQR        - returns square root of argument
STR$       - returns string representatin of number
TAB        - move cursor to tab position in present statement
TAN        - returns tangent
USR        - call user defined subprogram
VAL        - returns numeric value of a number string
XOR        - provides the exclusive-or of the argument


Reserved Variable Names:

DS         - Disk Status error number
DS$        - Disk Status error number and message
ER         - used in error trapping routine
ERR$       - used in error trapping routine
EL         - used in error trapping routine
ST         - status variable for I/O devices
TI         - real time clock
TI$        - real time clock


Operators:

The standard BASIC operators are used here, too.

ARITHMETIC   +  -  *  /  ^
Relational   =  <  >  <=  >= <>
Logical      AND   OR   NOT

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