ugBASIC User Manual

• ACCESSING (1)
• ACCESSING (2)
• ACCESSING (3)
• ACCESSING (4)
• INITIALIZING
• BOUNDS
• INIZIALIZATION

• INLINE (1 LINE)
• INLINE (MORE LINES)

• PLAY THE BELL
• PLAY THE BELL (2)
• BOOM!
• USE INSTRUMENTS
• PLAY MUSIC
• PLAY A NOTE
• SHOOT!
• SOUND SAMPLE (1)
• SOUND SAMPLE (2)
• SOUND SAMPLE (3)
• VOLUME CONTROL

• SWAP NUMBERS

• USING DATATYPE
• BIT MANIPULATION
• BIT COMPARISON
• ARRAY OF BITS

• COMBINE NIBBLES

• BASIC MASKING

• LITERAL DEFINITION
• LOADING FROM FILE
• ALIASING ON FILE LOADING
• PRINTING ON VIDEO

• EMBER

• MULTIPLE CONSOLE EXAMPLE

• PRINTABLE CHARACTERS
• PRINTABLE CHARACTERS (COMPRESSED)
• ASSEMBLY FOR BEGINNERS (MOS 6502)
• ASSEMBLY FOR BEGINNERS (MOTOROLA 6809)
• ASSEMBLY FOR BEGINNERS (ZILOG Z80)
• BAD APPLE
• TIME CALIBRATION
• 3D ROTATING CUBE
• 3D ROTATING CUBE (2)
• 3D ROTATING CUBE
• FIBONACCI CALCULATION
• FLARE ANIMATION
• FOR...NEXT BEST PRACTICE
• FOR...NEXT BEST PRACTICE
• GET/PUT PERFORMANCE
• IF SPEED TEST
• JOYSTICK PRIZE TRIBUTE
• LIGHT!
• MAZE GENERATOR
• MEMORY SCANNER
• MEMORY SCANNER
• MINIGAME
• NABOO N1 STARFIGHTER
• NABOO N1 STARFIGHTER (SCALED)
• PARABOLA AND HYPERBOLA
• PRIME NUMBERS
• PRIME NUMBERS (2)
• PRIME NUMBERS (3)
• PRIME NUMBERS (4)
• RANDOM DISTRIBUTION
• SHUFFLING
• SIERPINSKI CHALLENGE (adapted)
• SIERPINSKI CHALLENGE (optimized)
• SIERPINSKI CHALLENGE (final)
• DRAWING SPOCK
• DRAWING SPOCK USING DATA
• STAFIELD
• TEST CARD
• THE MILL
• A CARTOON FOREST
• TIMERS!
• WHAT A WONDERFUL WORLD

• USING AFTER..CALL
• USING AFTER..GOSUB
• USING ON GOTO
• USING ON GOSUB
• USING SELECT CASE
• USING IF..THEN..ELSE
• USING IF..THEN..ELSE IF
• USING FOR..NEXT
• USING NESTED FOR..NEXT
• USING DO..LOOP
• EXITING FROM LOOP
• EXITING FROM NESTED LOOP
• MIXED DO..LOOP AND WHILE..WEND
• MIXED DO..LOOP AND REPEAT..UNTIL
• USING EVERY..GOSUB
• USING EVERY..CALL
• USING MULTIPLE EVERY..GOSUB
• POPPING FROM GOSUB
• USING GOSUB..RETURN (1)
• USING GOSUB..RETURN (2)
• USING RUN
• USING GOTO WITH LABELS
• USING GOTO WITH LINE NUMBERS
• WITH UNCONDITIONAL WAIT

• JOYSTICK READ (BITMAP)
• JOYSTICK READ (BIT DECODING)
• JOYSTICK READ (FUNCTIONS)
• ANALOGIC JOYSTICK READ (FUNCTIONS)
• KEYBOARD READ (USING INKEY)
• KEYBOARD READ (USING INKEY AND ASC)
• KEYBOARD READ (USING INKEY AND SCANCODE)
• KEYBOARD READ (USING SCANSHIFT)
• KEYBOARD READ (BIT DECODING SCANSHIFT)
• KEYBOARD READ (USING KEY STATE)
• KEYBOARD READ (BIT DECODE KEY SHIFT)
• WAIT FOR A KEY
• KEYBOARD READ (USING INPUT$)

• USING DATA AND READ INSTRUCTION
• USING DATA AND READ INSTRUCTION WITH LABELS
• USING RESTORE INSTRUCTION
• USING READ END FUNCTION
• USING DATA LOAD
• USING DATA LOAD
• USING DATA AND READ INSTRUCTION WITH EXPLICIT TYPE
• USING DATA AND READ INSTRUCTION WITH LABELS
• USING RESTORE INSTRUCTION
• USING READ END FUNCTION
• USING DATA LOAD
• USING DATA LOAD
• USING DYNAMIC RESTORE

• UNIQUE SCREEN MODE
• USING DOUBLE BUFFER
• USING DOUBLE BUFFER AND SCREEN MODE UNIQUE

• SIMPLE CHAT CLIENT

• LIST OF AVAILABLE BANKS
• SET A BANK
• COPY FROM AND TO EXPANSION
• LOAD IMAGE ON BANK
• LOAD IMAGES ON BANK

• CALL MACHINE LANGUAGE
• CALL MACHINE LANGUAGE WITH REGISTERS
• CALL MACHINE EXTERNAL MACHINE LANGUAGE FILE
• CALL EXTERNAL MACHINE LANGUAGE FILE
• CALL EXTERNAL MACHINE LANGUAGE FILE (ABSOLUTE POSITION)
• CALL EXTERNAL MACHINE LANGUAGE FILE (USING STACK)
• ASM INLINE
• DECLARE EXTERNAL PROCEDURES
• DECLARE EXTERNAL PROCEDURES (WITH PARAMETERS)
• DECLARE EXTERNAL FUNCTIONS (WITH PARAMETERS)

• USING COSINE FUNCTION
• THE PI CONSTANT
• USING SINE FUNCTION
• USING TANGENT FUNCTION

• REPLACE A CHAR
• REPLACE A CHAR

• DRAWING BARS (PEDESTRIAN CROSSING)
• DRAWING BARS (TWO RED BARS)
• DRAWING (COLORED) BOXES
• DRAWING (PATTERNED) BOXES
• CLIPPING DRAWING
• COLORING (USING INK)
• COLORING (USING COLOR)
• COLORING (USING COLOR())
• USING PALETTE
• USING DOUBLE BUFFER
• DRAWING USING DRAW INSTRUCTIONS
• DRAWING LINES
• DRAWING (RANDOM) LINES
• FILL POLYGON
• USING PALETTE
• RANDOM PLOTTING
• FILL PLOTTING
• USING GET PIXEL COLOR (POINT)
• FILL (PATTERN) PLOT
• USING PMODE
• COLOR AT POINT
• POSITIONING (USING GR LOCATE)
• POSITIONING (USING XGR AND YGR)
• USING PMODE
• DRAWING SHAPES (USING CIRCLE AND POLYLINE)
• DRAWING RANDOM CIRCLES
• DRAWING RANDOM ELLIPSES
• DRAWING ENCLOSED CIRCLES
• TEXT COORDINATES (USING X/Y GRAPHIC)
• DRAWING AROUND TEXT
• TEXT COORDINATES (USING X/Y TEXT)
• DRAWING RANDOM TEXTS
• VERTICAL BLANK SYNC (1)
• VERTICAL BLANK SYNC (2)

• MONOCHROME IMAGE CAPURE (USING GET IMAGE)
• MULTICOLOR IMAGE CAPURE (USING GET IMAGE)
• IMAGE CAPURE (USING GET IMAGE AND PALETTE)
• LOADING IMAGE ( USING PRINT )
• LOADING MULTICOLOR IMAGE ( USING PRINT )
• DISPLAY MONOCHROME IMAGE
• DISPLAY MUILTICOLOR IMAGE
• LOAD AND DISPLAY ONE FRAME IMAGE
• DISPLAY ANIMATIONS
• DISPLAY MONOCHROME IMAGE (USING PUT IMAGE)
• DISPLAY MULTICOLOR IMAGE (USING PUT IMAGE)
• DISPLAY A RED TOKEN (USING PUT IMAGE)
• DISPLAY AN (Y DOUBLED) RED TOKEN (USING PUT IMAGE)
• LOADING FLIPPED IMAGE (USING FLIP X)

• ABSOLUTE VALUE (USING ABS)
• CALCULATE DISTANCE
• SUM OPERANDS (USING +)
• POWER AND MULTIPLICATIVE OPERANDS (USING ^ AND *)
• ASSOCIATIVE PRIORITY (SUMS AND PRODUCTS)
• ASSOCIATIVE PRIORITY (ALL OPERATIONS)
• USING RELATIVE NUMBERS
• HEXADECIMAL REPRESENTATION
• DECIMAL TO HEXADECIMAL
• SOME SIGNED OPERATIONS
• CONVERTING TO INTEGER
• FAST OPERATIONS (USING INC/DEC)
• FAST OPERATIONS (USING ADD)
• WITH FAST OPERATIONS (USING MUL)
• FAST OPERATIONS (USING DIV)
• RANDOM VALUES (USING RND())
• RANDOM VALUES (USING RANDOMIZE)
• WITH NOT REPETITIVE RANDOM VALUES
• MAXIMUM VALUE (USING MAX)
• MINIMUM VALUE (USING MIN)
• LIMITS OF NUMERIC TYPES
• CHECKING SIGN / UNSIGN CONVERSION
• SIGN (USING SGN())
• INTEGER SQUARE ROOT (USING SQR())

• READING A BYTE
• READING A WORD
• READING A DOUBLE WORD

• SIMPLE CONCURRENCY (2 TASKS)
• CONDITIONATED CONCURRENCY (WAIT FOR ENDING TASK)
• ACCESSING VARIABLES (EXPLICIT)
• ACCESSING VARIABLES (IMPLICIT)
• PRE-EMPTIVE PARALLEL COMPUTING
• MULTITHREADED ANIMATION (1)
• MULTITHREADED ANIMATION (2)

• USING GLOBAL VARIABLES
• ALL VARIABLES AS GLOBAL (USING WILDCARD *)
• DEFINING A PROCEDURE (BUT NOT CALLING IT)
• CALL A PROCEDURE (USING [])
• CALL A PROCEDURE (ALL WAYS)
• CALL A PROCEDURE (USING ON...PROC)
• EXITING FROM A PROCEDURE
• USING LOCAL VARIABLES (1)
• USING LOCAL VARIABLES (2)
• RETURN VALUE (USING PARAM$())
• RETURN VALUE (USING RETURN) (1)
• RETURN VALUE (USING RETURN) (2)
• RETURN VALUE (USING RETURN) (3)
• CALL WITH SINGLE PARAMETER
• CALL WITH MULTIPLE PARAMETERS
• USING SHARED VARIABLES

• VERTICAL BANDING

• CLEARING SCREEN (USING CLS) (1)
• CLEARING SCREEN (USING CLS) (2)
• CHANGING MODE
• CHANGING RESOLUTION
• CHECK RESOLUTION
• BEST RESOLUTION (BITMAP MODE)
• BEST RESOLUTION (TILEMAP MODE)

• SEQUENCE LOADING AND DISPLAY OF A FRAME

• CREATE A (SIMPLE) SPRITE
• MOVING PARALLEL SPRITES
• MOVING PARALLEL SPRITES IN GAMELOOP
• ASSEMBLING A MULTICOLOR SPRITE (1)
• ASSEMBLING A MULTICOLOR SPRITE (2)
• COLLISIONS (1)
• COLLISIONS (2)
• TESTING COLLISION

• LOADING A FILE
• LOADING AN IMAGE (1)
• LOADING AN IMAGE (2)
• LOADING IMAGES
• LOADING IMAGES
• LOADING MUSIC
• LOADING ON VARIABLES
• LOADING TILESET
• LOADING TILEMAP
• SAVING A FILE

• ASCII VALUE (USING ASC())
• LETTER CASING (USING UPPER/LOWER)
• GENERATE CHARACTER (USING CHR())
• FLIPPING STRINGS
• SEARCH INSIDE A STRING (USING INSTR())
• SEARCH INSIDE A STRING FROM A POSITION (USING INSTR())
• EXTRACT A SUBSTRING (USING LEFT())
• REPLACING A SUBSTRING (USING LEFT())
• MEASURE THE LENGHT OF A STRING (USING LEN())
• EXTRACT / REPLACE A SUBSTRING (USING MID())
• ITERATIVE MID
• EXTRACT A SUBSTRING (USING RIGHT())
• REPLACE A SUBSTRING (USING RIGHT())
• GENERATE SPACES (USING SPACE())
• CONVERT NUMBERS (USING STR())
• GENERATE STRINGS (USING STRING())
• SUBTRACTING STRINGS
• CONVERTING A STRING TO NUMBER (USING VAL())

• SYSTEM CALLS (ON ATARI 400/800)
• SYSTEM CALLS (ON ATARI XL/XE)
• SYSTEM CALLS (ON COMMODORE 128)
• SYSTEM CALLS (ON COMMODORE 64)
• SYSTEM CALLS (ON AMSTRAD CPC)
• SYSTEM CALLS (ON MSX)
• SYSTEM CALLS (ON COMMODORE VIC-20)

• HORIZONTAL SCROLLING (USING HSCROLL)
• VERTICAL SCROLL (USING VSCROLL)
• ERASING TEXT (USING CLINE)
• USING ESCAPE SEQUENCES (1)
• USING ESCAPE SEQUENCES (2)
• DISPLAY ALL PEN COLORS (USING PEN)
• CHANGE PEN COLOR (USING PEN$())
• DISPLAY ALL PAPER COLORS (USING PAPER)
• CHANGE PAPER COLOR (USING PAPER$())
• CHANGE PEN AND PAPER COLORS
• CHANGE WRITING MODE (USING WRITING)
• TEXT POSITIONING (USING LOCATE)
• TEXT POSITIONING (USING HOME)
• TEXT POSITIONING (USING CMOVE)
• TEXT POSITIONING (USING CMOVE$())
• TEXT POSITIONING (USING AT$())
• TEXT POSITIONING (USING AT$()/LOCATE)
• TEXT POSITIONING (USING LOCATE/CMOVE)
• TEXT POSITIONING (USING TAB$())
• TEXT POSITIONING (USING CDOWN)
• TEXT POSITIONING (USING CDOWN$())
• TEXT POSITIONING (USING SPC())
• HELLO WORLD
• PRINTABLE CHARS
• PRINT (WITH OPERATORS)
• CHANGE KIND OF PRINT
• PRINT AT GRID
• PRINTING (USING TAB())
• GET TEXT POSITION (USING XCURS()/YCURS())
• GET TEXT POSITION (USING MEMORIZE/REMEMBER)

• BASIC USAGE
• TILE PROPERTIES
• BASIC TILEMAP LOADING (1)
• BASIC TILEMAP LOADING (2)
• SCROLLING TILEMAP
• USING MULTILAYERS TILEMAP
• USING TILEMAP
• RETRIEVING A TILE (MULTILAYER)

• AT STRINGS
• BLOCK / REC COMMANDS
• DEFINE CENTER AND NEW LINES
• USING CGOTO
• ALTERNATIVE SYNTAX FOR CIRCLE
• USING D!PEEK AND D!POKE
• USING DUP
• USING FILL
• USING INSERT FUNCTION
• USING INSERT
• USING INST
• USING JOYSTICK
• USING LOOP WITH SIMONS' BASIC SYNTAX
• USING MULTI
• DOUBLE DOLLAR
• USING DOUBLE PERCENT
• USING OPTION CALL PRAGMA
• USING PAUSE
• USING PLACE

• BLADE RUNNER OPENING

If you have found a problem trying to run those examples, if you think there is a bug or, more simply, you would like it to be improved, open an issue for this page on GitHub. Thank you!