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introvoyz041
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tinybasic

/*
 *
 *	$Id: language.h,v 1.1 2024/02/25 04:43:16 stefan Exp stefan $ 
 *
 *	Stefan's IoT BASIC interpreter 
 *
 * 	See the licence file on 
 *	https://github.com/slviajero/tinybasic for copyright/left.
 *    (GNU GENERAL PUBLIC LICENSE, Version 3, 29 June 2007)
 *
 *	Author: Stefan Lenz, sl001@serverfabrik.de
 *
 *	This is the language definition file. Edit this to set the language 
 * 	capabilities.
 * 
 * MEMSIZE was moved to hardware.h now as it is a hardware setting.
 * 
 */

/*
 *	DEBUG switches on compiled debug mode. Consider using runtime 
 * 		debug with SET 0,x before using this.
 */
#define DEBUG 0

/*
 * Interpreter feature sets, choose one of the predefines or undefine all predefines and set the 
 * features in custom settings
 *
 * BASICFULL: full language set, use this with flash >32kB - ESPs, MKRs, Mega2560, RP2040, UNO R4
 * BASICINTEGER: integer BASIC with full language, use this with flash >32kB
 * BASICSIMPLE: integer BASIC with reduced language set, 32kB capable - for UNOs with a lot of device drivers
 * BASICSIMPLEWITHFLOAT: a small floating point BASIC, 32kB capable, for UNOs - good for UNOs with the need of float
 * BASICTINYWITHFLOAT: a floating point tinybasic, if you have 32kB and need complex device drivers
 * BASICMINIMAL: minimal language, just Palo Alto plus Arduino I/O, works on 168 with 1kB RAM and 16kB flash
 * 
 * The board will try to find the best language model for it's size and capabilities. Relies on the 
 * information hardware.h produces. It set one of the language models: 
 * 
 * BASICFULL, BASICSIMPLE, BASICMINIMAL.
 * 
 * Setting NOLANGUAGEHEURISTICS and then one of the models below will override this 
 * selection.
 */
#define LANGUAGEHEURISTICS

#ifndef LANGUAGEHEURISTICS
#undef  BASICFULL
#undef	BASICINTEGER
#undef	BASICSIMPLE
#undef	BASICMINIMAL
#undef  BASICPALOALTO
#undef	BASICSIMPLEWITHFLOAT
#undef	BASICTINYWITHFLOAT
#endif

/*
 * Custom settings undef all the the language sets above when you are using this. Not all language
 * features work in all combinations.
 * 
 * HASAPPLE1: Apple 1 BASIC compatibility. This is the base for all other features.
 *  In this version the interpreter has a heap, a string pool and one dimensional arrays.
 * HASARDUINOIO: Arduino I/O functions, including millis() timer.
 * HASFILEIO: file I/O functions, including open, close, read, write, remove, rename.
 * HASTONE: tone() and noTone() functions for sound output mapped to the PLAY command.
 * HASPULSE: pulseIn() function for measuring pulse lengths. Pulse output. Both mapped to the PULSE command.
 * HASSTEFANSEXT: Stefan's BASIC extensions, including ELSE, PUT, GET, advanced FOR loops, SQR and POW.
 * HASERRORMSG: error messages for syntax and runtime errors.
 * HASVT52: VT52 terminal emulation for text output -> moved to hardware.h
 * HASFLOAT: floating point support.
 * HASGRAPH: graphics support, including line, circle, rectangle, fill, color.
 * HASDARTMOUTH: Dartmouth BASIC compatibility: single line DEF FN, ON, READ, DATA.
 * HASDARKARTS: Dark Arts BASIC is MALLOC, FIND, CLR for individual variables and EVAL for self modifying code.
 * HASIOT: IoT functions, Wire access, Sensor functions, MQTT. Needs strings and heap. STR, VAL, INSTR are 
 *  part of this. MQTT support only on Arduino-
 * HASMULTIDIM: two dimensional arrays and one dimensional string arrays.
 * HASTIMER: timer functions, AFTER and EVERY for periodic execution of programs.
 * HASEVENTS: event handling, EVENT command. 
 * HASERRORHANDLING: error handling with ERROR GOTO.
 * HASSTRUCT: structured language elements, WHILE WEND, REPEAT UNTIL, SWITCH CASE. Multi line IF THEN ELSE 
 * 	with the DO DEND construct.
 * HASMSSTRINGS: MS Basic compatible strings, RIGHT$, LEFT$, MID$, ASC, CHR$, and string addition with +.
 * 	Compatibility to MS BASICs is limited as this BASIC has only inplace string operations-
 * HASMULTILINEFUNCTIONS: multi line functions, DEF FN, FEND.
 * HASEDITOR: line editor for the console.
 * HASTINYBASICINPUT: Tiny BASIC compatible input using the expression parser. Expressions and variables 
 * 	are valid number input with it. Default now but can have odd side effects.
 * HASLONGNAMES: long variable names, up to 16 characters. Name length is set by MAXNAME in basic.h and
 * 	can be any value <128 bytes. Names are still only uppercase and all names will be uppercased by lexer.
 * HASHELP: show the commands of the interpreter. Will be extended to a help system.
 * HASFULLINSTR: the full C64 style INSTR command. Without this flag INSTR only accepts
 *	a single character as argument. This is much faster and leaner on an Arduino. 
 * 	This macro is activated when HASMSSTRINGS is set. 
 * HASLOOPOPT: optimizes the FOR loops for speed. This is a trade off between speed and 
 *  memory. It is activated by default. Speeup is about 10% on a Mac. On platforms
 *  with low memory bandwidth it is much more.
 * HASNUMSYSTEM: constants can be hex, octal, binary or decimal. This is not activated by 
 *  default. Currently only implemented in VAL() and STR().
 * HASBITWISE: has bitwise operations >>, << and the function BIT -> removed and default now.
 * 
 * If you want to set everything manually, set NOLANGUAGEHEURISTICS above
 */

#ifndef LANGUAGEHEURISTICS
#define HASAPPLE1
#define HASARDUINOIO
#define HASFILEIO
#define HASTONE
#define HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#define HASFLOAT
#define HASGRAPH
#define HASDARTMOUTH
#define HASDARKARTS
#define HASIOT
#define HASMULTIDIM
#define HASTIMER
#define HASEVENTS
#define HASERRORHANDLING
#define HASSTRUCT
#define HASMSSTRINGS
#define HASMULTILINEFUNCTIONS
#define HASEDITOR
#define HASTINYBASICINPUT
#define HASLONGNAMES 
#define HASHELP
#define HASFULLINSTR
#define HASLOOPOPT
#define HASNUMSYSTEM
#endif


/*
 *
 * Odd stuff - these things change the behaviour of BASIC in some aspects.
 * They can be used to make the interpreter compatible with other dialects.
 * 
 * 	POWERRIGHTTOLEFT: normally the ^ operator works from left to right 
 *		which means 2^3^2 = (2^3)^2 = 8^2 = 64. Setting this flag would 
 *		change the behaviour to 2^3^2 = 2^(3^2) = 512
 *  MSARRAYLIMITS: in BASIC arrays start at 1 and DIM A(10) creates 10 
 *      elements. With MSARRAYLIMITS defined, arrays start at 0 and have 
 *      n+1 elements. This can be changed at any time with SET 21,0 or 1.
 *  SUPPRESSSUBSTRINGS: switch off substring logic by default, makes only sense with 
 *      HASMSSTRINGS activated. With this, the syntax of strings and string 
 *      arrays is comaptible to MS strings (only used to preset the variable now).
 * 		SET 20 can change this at runtime. 
 *  USELONGJUMP: use the longjmp feature of C. This greatly simplifies 
 *      error handling at the cost of portability to some MCU platforms
 *      currently only experimental. It costs memory for the jump buffer. 
 *      Don't use it on very small systems. LONGJUMP must be set to 0 or 1 as 
 *      it is used in boolean expression in the code
 *  BOOLEANMODE: switch the behaviour of BASICs boolean operators. Default (-1)
 *      is to cast all numbers to signed 16bit and then do bitwise arithemtic.
 *      In this mode false is 0 and -1 is true. (1) is C style boolean arithemtic.
 *      In this mode true is 1 and false is 0. AND and OR still do bitwise operations
 *      but NOT is C not. SET 19,1 or -1 can change this at runtime.
 *  HAS64BIT: 64 bit floating point support on platforms that have a 64 bit double. 
 *      Counterexample: AVR 8bit does not have 64 bit floating point.
 * HAS32BITINT: 32 bit integer support on 8 bit platforms.
 * HASPOWER: the POWER operator ^ is available in addition to the POW function.
 * HASUSRCALL: the USR and CALL functions. On small systems they need a lot 
 *      of flash and can be disabled.
 */

#undef POWERRIGHTTOLEFT
#undef MSARRAYLIMITS
#undef SUPPRESSSUBSTRINGS
#define USELONGJUMP 0
#define BOOLEANMODE -1
#undef  HAS64BIT
#undef  HAS32BITINT
#define HASPOWER 
#define HASUSRCALL

/* Palo Alto plus Arduino functions */
#ifdef BASICMINIMAL
#undef HASAPPLE1
#define HASARDUINOIO
#undef HASFILEIO
#undef HASTONE
#undef HASPULSE
#undef HASSTEFANSEXT
#undef HASERRORMSG
#undef HASFLOAT
#undef HASGRAPH
#undef HASDARTMOUTH
#undef HASDARKARTS
#undef HASIOT
#undef HASMULTIDIM
#undef HASTIMER
#undef HASEVENTS
#undef HASERRORHANDLING
#undef HASSTRUCT
#undef HASMSSTRINGS
#undef HASMULTILINEFUNCTIONS
#undef HASEDITOR
#define HASTINYBASICINPUT
#undef HASLONGNAMES 
#undef HASHELP
#undef HASFULLINSTR
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASPOWER
#undef HASUSRCALL
#endif

/* the original Palo Alto Tinybasic, this is the real minimum */
#ifdef BASICPALOALTO
#undef HASAPPLE1
#undef HASARDUINOIO
#undef HASFILEIO
#undef HASTONE
#undef HASPULSE
#undef HASSTEFANSEXT
#undef HASERRORMSG
#undef HASFLOAT
#undef HASGRAPH
#undef HASDARTMOUTH
#undef HASDARKARTS
#undef HASIOT
#undef HASMULTIDIM
#undef HASTIMER
#undef HASEVENTS
#undef HASERRORHANDLING
#undef HASSTRUCT
#undef HASMSSTRINGS
#undef HASMULTILINEFUNCTIONS
#undef HASEDITOR
#define HASTINYBASICINPUT
#undef HASLONGNAMES 
#undef HASHELP
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASBITWISE
#undef HASFULLINSTR
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASPOWER
#undef HASUSRCALL
#endif

/* all features minus float and tone */
#ifdef  BASICINTEGER
#define HASAPPLE1
#define HASARDUINOIO
#define HASFILEIO
#define HASTONE
#define HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#undef  HASFLOAT
#define HASGRAPH
#define HASDARTMOUTH
#define HASDARKARTS
#define HASIOT
#define HASMULTIDIM
#define HASTIMER
#define HASEVENTS
#define HASERRORHANDLING
#define HASSTRUCT
#define HASMSSTRINGS
#define HASMULTILINEFUNCTIONS
#define HASEDITOR
#define HASTINYBASICINPUT
#define HASLONGNAMES 
#define HASHELP
#define HASFULLINSTR
#define HASLOOPOPT
#define HASNUMSYSTEM
#endif

/* a simple integer basic for small systems mainly the UNO */
#ifdef  BASICSIMPLE
#define HASAPPLE1
#define HASARDUINOIO
#define HASFILEIO
#define HASTONE
#define HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#undef  HASFLOAT
#undef  HASGRAPH
#define HASDARTMOUTH
#undef  HASDARKARTS
#define HASIOT
#undef  HASMULTIDIM
#define HASTIMER
#define HASEVENTS
#define HASERRORHANDLING
#undef 	HASSTRUCT
#undef  HASMSSTRINGS
#undef HASMULTILINEFUNCTIONS
#undef HASEDITOR
#define HASTINYBASICINPUT
#undef HASLONGNAMES 
#undef HASHELP
#undef HASFULLINSTR
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASPOWER
#undef HASUSRCALL
#endif

/* a small integer BASIC for 32kB systems with big cores */
#ifdef  BASICSMALL
#define HASAPPLE1
#define HASARDUINOIO
#undef  HASFILEIO
#undef  HASTONE
#undef  HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#undef  HASFLOAT
#undef  HASGRAPH
#undef  HASDARTMOUTH
#undef  HASDARKARTS
#define HASIOT
#undef  HASMULTIDIM
#define HASTIMER
#define HASEVENTS
#define HASERRORHANDLING
#undef  HASSTRUCT
#undef HASMSSTRINGS
#undef HASMULTILINEFUNCTIONS
#undef HASEDITOR
#define HASTINYBASICINPUT
#undef HASLONGNAMES 
#undef HASHELP
#undef HASFULLINSTR
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASPOWER
#undef HASUSRCALL
#endif


/* all features activated */
#ifdef BASICFULL
#define HASAPPLE1
#define HASARDUINOIO
#define HASFILEIO
#define HASTONE
#define HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#define HASFLOAT
#define HASGRAPH
#define HASDARTMOUTH
#define HASDARKARTS
#define HASIOT
#define HASMULTIDIM
#define HASTIMER
#define HASEVENTS
#define HASERRORHANDLING
#define HASSTRUCT
#define HASMSSTRINGS
#define HASMULTILINEFUNCTIONS
#define HASEDITOR
#define HASTINYBASICINPUT
#define HASLONGNAMES 
#define HASHELP
#define HASFULLINSTR
#define HASLOOPOPT
#define HASNUMSYSTEM
#endif

/* a simple BASIC with float support */
#ifdef BASICSIMPLEWITHFLOAT
#define HASAPPLE1
#define HASARDUINOIO
#undef HASFILEIO
#undef HASTONE
#undef HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#define HASFLOAT
#undef HASGRAPH
#define HASDARTMOUTH
#undef HASDARKARTS
#undef HASIOT
#undef HASMULTIDIM
#undef HASTIMER
#undef HASEVENTS
#undef HASERRORHANDLING
#undef HASSTRUCT
#undef HASMSSTRINGS
#undef HASMULTILINEFUNCTIONS
#undef HASEDITOR
#define HASTINYBASICINPUT
#undef HASLONGNAMES 
#undef HASHELP
#undef HASFULLINSTR
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASPOWER
#undef HASUSRCALL
#endif

/* a Tinybasic with float support */
#ifdef BASICTINYWITHFLOAT
#define HASAPPLE1
#define HASARDUINOIO
#undef HASFILEIO
#undef HASTONE
#undef HASPULSE
#define HASSTEFANSEXT
#define HASERRORMSG
#define HASFLOAT
#undef HASGRAPH
#undef HASDARTMOUTH
#undef HASDARKARTS
#undef HASIOT
#undef HASMULTIDIM
#undef HASTIMER
#undef HASEVENTS
#undef HASERRORHANDLING
#undef HASSTRUCT
#undef HASMSSTRINGS
#undef HASMULTILINEFUNCTIONS
#undef HASEDITOR
#define HASTINYBASICINPUT
#undef HASLONGNAMES 
#undef HASHELP
#undef HASFULLINSTR
#undef HASLOOPOPT
#undef HASNUMSYSTEM
#undef HASPOWER
#undef HASUSRCALL
#endif

/* 
 *	Language feature dependencies
 * 
 * Dartmouth and darkarts needs the heap which is in Apple 1
 * IoT needs strings and the heap, also Apple 1
 * 
 * String arrays need multi dimensional capabilities
 *
 * The structured language set needs ELSE from STEFANSEXT
 *
 */
#if defined(HASMULTILINEFUNCTIONS)
#define HASDARTMOUTH
#endif

#if defined(HASDARTMOUTH) || defined(HASDARKARTS) || defined(HASIOT) || defined(HASMSSTRINGS)
#define HASAPPLE1
#endif

#if defined(HASSTRUCT)
#define HASSTEFANSEXT
#endif

/* MS strings also bring the full INSTR */
#if defined(HASMSSTRINGS)
#define HASFULLINSTR
#endif

/* dependencies on the hardware */
#if !defined(DISPLAYHASGRAPH) 
#undef HASGRAPH
#endif

	/*
	*
	* $Id: language.h,v 1.1 2024/02/25 04:43:16 stefan Exp stefan $
	*
	* Stefan's IoT BASIC interpreter
	*
	* See the licence file on
	* https://github.com/slviajero/tinybasic for copyright/left.
	* (GNU GENERAL PUBLIC LICENSE, Version 3, 29 June 2007)
	*
	* Author: Stefan Lenz, sl001@serverfabrik.de
	*
	* This is the language definition file. Edit this to set the language
	* capabilities.
	*
	* MEMSIZE was moved to hardware.h now as it is a hardware setting.
	*
	*/

	/*
	* DEBUG switches on compiled debug mode. Consider using runtime
	* debug with SET 0,x before using this.
	*/
	#define DEBUG 0

	/*
	* Interpreter feature sets, choose one of the predefines or undefine all predefines and set the
	* features in custom settings
	*
	* BASICFULL: full language set, use this with flash >32kB - ESPs, MKRs, Mega2560, RP2040, UNO R4
	* BASICINTEGER: integer BASIC with full language, use this with flash >32kB
	* BASICSIMPLE: integer BASIC with reduced language set, 32kB capable - for UNOs with a lot of device drivers
	* BASICSIMPLEWITHFLOAT: a small floating point BASIC, 32kB capable, for UNOs - good for UNOs with the need of float
	* BASICTINYWITHFLOAT: a floating point tinybasic, if you have 32kB and need complex device drivers
	* BASICMINIMAL: minimal language, just Palo Alto plus Arduino I/O, works on 168 with 1kB RAM and 16kB flash
	*
	* The board will try to find the best language model for it's size and capabilities. Relies on the
	* information hardware.h produces. It set one of the language models:
	*
	* BASICFULL, BASICSIMPLE, BASICMINIMAL.
	*
	* Setting NOLANGUAGEHEURISTICS and then one of the models below will override this
	* selection.
	*/
	#define LANGUAGEHEURISTICS

	#ifndef LANGUAGEHEURISTICS
	#undef BASICFULL
	#undef BASICINTEGER
	#undef BASICSIMPLE
	#undef BASICMINIMAL
	#undef BASICPALOALTO
	#undef BASICSIMPLEWITHFLOAT
	#undef BASICTINYWITHFLOAT
	#endif

	/*
	* Custom settings undef all the the language sets above when you are using this. Not all language
	* features work in all combinations.
	*
	* HASAPPLE1: Apple 1 BASIC compatibility. This is the base for all other features.
	* In this version the interpreter has a heap, a string pool and one dimensional arrays.
	* HASARDUINOIO: Arduino I/O functions, including millis() timer.
	* HASFILEIO: file I/O functions, including open, close, read, write, remove, rename.
	* HASTONE: tone() and noTone() functions for sound output mapped to the PLAY command.
	* HASPULSE: pulseIn() function for measuring pulse lengths. Pulse output. Both mapped to the PULSE command.
	* HASSTEFANSEXT: Stefan's BASIC extensions, including ELSE, PUT, GET, advanced FOR loops, SQR and POW.
	* HASERRORMSG: error messages for syntax and runtime errors.
	* HASVT52: VT52 terminal emulation for text output -> moved to hardware.h
	* HASFLOAT: floating point support.
	* HASGRAPH: graphics support, including line, circle, rectangle, fill, color.
	* HASDARTMOUTH: Dartmouth BASIC compatibility: single line DEF FN, ON, READ, DATA.
	* HASDARKARTS: Dark Arts BASIC is MALLOC, FIND, CLR for individual variables and EVAL for self modifying code.
	* HASIOT: IoT functions, Wire access, Sensor functions, MQTT. Needs strings and heap. STR, VAL, INSTR are
	* part of this. MQTT support only on Arduino-
	* HASMULTIDIM: two dimensional arrays and one dimensional string arrays.
	* HASTIMER: timer functions, AFTER and EVERY for periodic execution of programs.
	* HASEVENTS: event handling, EVENT command.
	* HASERRORHANDLING: error handling with ERROR GOTO.
	* HASSTRUCT: structured language elements, WHILE WEND, REPEAT UNTIL, SWITCH CASE. Multi line IF THEN ELSE
	* with the DO DEND construct.
	* HASMSSTRINGS: MS Basic compatible strings, RIGHT$, LEFT$, MID$, ASC, CHR$, and string addition with +.
	* Compatibility to MS BASICs is limited as this BASIC has only inplace string operations-
	* HASMULTILINEFUNCTIONS: multi line functions, DEF FN, FEND.
	* HASEDITOR: line editor for the console.
	* HASTINYBASICINPUT: Tiny BASIC compatible input using the expression parser. Expressions and variables
	* are valid number input with it. Default now but can have odd side effects.
	* HASLONGNAMES: long variable names, up to 16 characters. Name length is set by MAXNAME in basic.h and
	* can be any value <128 bytes. Names are still only uppercase and all names will be uppercased by lexer.
	* HASHELP: show the commands of the interpreter. Will be extended to a help system.
	* HASFULLINSTR: the full C64 style INSTR command. Without this flag INSTR only accepts
	* a single character as argument. This is much faster and leaner on an Arduino.
	* This macro is activated when HASMSSTRINGS is set.
	* HASLOOPOPT: optimizes the FOR loops for speed. This is a trade off between speed and
	* memory. It is activated by default. Speeup is about 10% on a Mac. On platforms
	* with low memory bandwidth it is much more.
	* HASNUMSYSTEM: constants can be hex, octal, binary or decimal. This is not activated by
	* default. Currently only implemented in VAL() and STR().
	* HASBITWISE: has bitwise operations >>, << and the function BIT -> removed and default now.
	*
	* If you want to set everything manually, set NOLANGUAGEHEURISTICS above
	*/

	#ifndef LANGUAGEHEURISTICS
	#define HASAPPLE1
	#define HASARDUINOIO
	#define HASFILEIO
	#define HASTONE
	#define HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#define HASFLOAT
	#define HASGRAPH
	#define HASDARTMOUTH
	#define HASDARKARTS
	#define HASIOT
	#define HASMULTIDIM
	#define HASTIMER
	#define HASEVENTS
	#define HASERRORHANDLING
	#define HASSTRUCT
	#define HASMSSTRINGS
	#define HASMULTILINEFUNCTIONS
	#define HASEDITOR
	#define HASTINYBASICINPUT
	#define HASLONGNAMES
	#define HASHELP
	#define HASFULLINSTR
	#define HASLOOPOPT
	#define HASNUMSYSTEM
	#endif


	/*
	*
	* Odd stuff - these things change the behaviour of BASIC in some aspects.
	* They can be used to make the interpreter compatible with other dialects.
	*
	* POWERRIGHTTOLEFT: normally the ^ operator works from left to right
	* which means 2^3^2 = (2^3)^2 = 8^2 = 64. Setting this flag would
	* change the behaviour to 2^3^2 = 2^(3^2) = 512
	* MSARRAYLIMITS: in BASIC arrays start at 1 and DIM A(10) creates 10
	* elements. With MSARRAYLIMITS defined, arrays start at 0 and have
	* n+1 elements. This can be changed at any time with SET 21,0 or 1.
	* SUPPRESSSUBSTRINGS: switch off substring logic by default, makes only sense with
	* HASMSSTRINGS activated. With this, the syntax of strings and string
	* arrays is comaptible to MS strings (only used to preset the variable now).
	* SET 20 can change this at runtime.
	* USELONGJUMP: use the longjmp feature of C. This greatly simplifies
	* error handling at the cost of portability to some MCU platforms
	* currently only experimental. It costs memory for the jump buffer.
	* Don't use it on very small systems. LONGJUMP must be set to 0 or 1 as
	* it is used in boolean expression in the code
	* BOOLEANMODE: switch the behaviour of BASICs boolean operators. Default (-1)
	* is to cast all numbers to signed 16bit and then do bitwise arithemtic.
	* In this mode false is 0 and -1 is true. (1) is C style boolean arithemtic.
	* In this mode true is 1 and false is 0. AND and OR still do bitwise operations
	* but NOT is C not. SET 19,1 or -1 can change this at runtime.
	* HAS64BIT: 64 bit floating point support on platforms that have a 64 bit double.
	* Counterexample: AVR 8bit does not have 64 bit floating point.
	* HAS32BITINT: 32 bit integer support on 8 bit platforms.
	* HASPOWER: the POWER operator ^ is available in addition to the POW function.
	* HASUSRCALL: the USR and CALL functions. On small systems they need a lot
	* of flash and can be disabled.
	*/

	#undef POWERRIGHTTOLEFT
	#undef MSARRAYLIMITS
	#undef SUPPRESSSUBSTRINGS
	#define USELONGJUMP 0
	#define BOOLEANMODE -1
	#undef HAS64BIT
	#undef HAS32BITINT
	#define HASPOWER
	#define HASUSRCALL

	/* Palo Alto plus Arduino functions */
	#ifdef BASICMINIMAL
	#undef HASAPPLE1
	#define HASARDUINOIO
	#undef HASFILEIO
	#undef HASTONE
	#undef HASPULSE
	#undef HASSTEFANSEXT
	#undef HASERRORMSG
	#undef HASFLOAT
	#undef HASGRAPH
	#undef HASDARTMOUTH
	#undef HASDARKARTS
	#undef HASIOT
	#undef HASMULTIDIM
	#undef HASTIMER
	#undef HASEVENTS
	#undef HASERRORHANDLING
	#undef HASSTRUCT
	#undef HASMSSTRINGS
	#undef HASMULTILINEFUNCTIONS
	#undef HASEDITOR
	#define HASTINYBASICINPUT
	#undef HASLONGNAMES
	#undef HASHELP
	#undef HASFULLINSTR
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASPOWER
	#undef HASUSRCALL
	#endif

	/* the original Palo Alto Tinybasic, this is the real minimum */
	#ifdef BASICPALOALTO
	#undef HASAPPLE1
	#undef HASARDUINOIO
	#undef HASFILEIO
	#undef HASTONE
	#undef HASPULSE
	#undef HASSTEFANSEXT
	#undef HASERRORMSG
	#undef HASFLOAT
	#undef HASGRAPH
	#undef HASDARTMOUTH
	#undef HASDARKARTS
	#undef HASIOT
	#undef HASMULTIDIM
	#undef HASTIMER
	#undef HASEVENTS
	#undef HASERRORHANDLING
	#undef HASSTRUCT
	#undef HASMSSTRINGS
	#undef HASMULTILINEFUNCTIONS
	#undef HASEDITOR
	#define HASTINYBASICINPUT
	#undef HASLONGNAMES
	#undef HASHELP
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASBITWISE
	#undef HASFULLINSTR
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASPOWER
	#undef HASUSRCALL
	#endif

	/* all features minus float and tone */
	#ifdef BASICINTEGER
	#define HASAPPLE1
	#define HASARDUINOIO
	#define HASFILEIO
	#define HASTONE
	#define HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#undef HASFLOAT
	#define HASGRAPH
	#define HASDARTMOUTH
	#define HASDARKARTS
	#define HASIOT
	#define HASMULTIDIM
	#define HASTIMER
	#define HASEVENTS
	#define HASERRORHANDLING
	#define HASSTRUCT
	#define HASMSSTRINGS
	#define HASMULTILINEFUNCTIONS
	#define HASEDITOR
	#define HASTINYBASICINPUT
	#define HASLONGNAMES
	#define HASHELP
	#define HASFULLINSTR
	#define HASLOOPOPT
	#define HASNUMSYSTEM
	#endif

	/* a simple integer basic for small systems mainly the UNO */
	#ifdef BASICSIMPLE
	#define HASAPPLE1
	#define HASARDUINOIO
	#define HASFILEIO
	#define HASTONE
	#define HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#undef HASFLOAT
	#undef HASGRAPH
	#define HASDARTMOUTH
	#undef HASDARKARTS
	#define HASIOT
	#undef HASMULTIDIM
	#define HASTIMER
	#define HASEVENTS
	#define HASERRORHANDLING
	#undef HASSTRUCT
	#undef HASMSSTRINGS
	#undef HASMULTILINEFUNCTIONS
	#undef HASEDITOR
	#define HASTINYBASICINPUT
	#undef HASLONGNAMES
	#undef HASHELP
	#undef HASFULLINSTR
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASPOWER
	#undef HASUSRCALL
	#endif

	/* a small integer BASIC for 32kB systems with big cores */
	#ifdef BASICSMALL
	#define HASAPPLE1
	#define HASARDUINOIO
	#undef HASFILEIO
	#undef HASTONE
	#undef HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#undef HASFLOAT
	#undef HASGRAPH
	#undef HASDARTMOUTH
	#undef HASDARKARTS
	#define HASIOT
	#undef HASMULTIDIM
	#define HASTIMER
	#define HASEVENTS
	#define HASERRORHANDLING
	#undef HASSTRUCT
	#undef HASMSSTRINGS
	#undef HASMULTILINEFUNCTIONS
	#undef HASEDITOR
	#define HASTINYBASICINPUT
	#undef HASLONGNAMES
	#undef HASHELP
	#undef HASFULLINSTR
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASPOWER
	#undef HASUSRCALL
	#endif


	/* all features activated */
	#ifdef BASICFULL
	#define HASAPPLE1
	#define HASARDUINOIO
	#define HASFILEIO
	#define HASTONE
	#define HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#define HASFLOAT
	#define HASGRAPH
	#define HASDARTMOUTH
	#define HASDARKARTS
	#define HASIOT
	#define HASMULTIDIM
	#define HASTIMER
	#define HASEVENTS
	#define HASERRORHANDLING
	#define HASSTRUCT
	#define HASMSSTRINGS
	#define HASMULTILINEFUNCTIONS
	#define HASEDITOR
	#define HASTINYBASICINPUT
	#define HASLONGNAMES
	#define HASHELP
	#define HASFULLINSTR
	#define HASLOOPOPT
	#define HASNUMSYSTEM
	#endif

	/* a simple BASIC with float support */
	#ifdef BASICSIMPLEWITHFLOAT
	#define HASAPPLE1
	#define HASARDUINOIO
	#undef HASFILEIO
	#undef HASTONE
	#undef HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#define HASFLOAT
	#undef HASGRAPH
	#define HASDARTMOUTH
	#undef HASDARKARTS
	#undef HASIOT
	#undef HASMULTIDIM
	#undef HASTIMER
	#undef HASEVENTS
	#undef HASERRORHANDLING
	#undef HASSTRUCT
	#undef HASMSSTRINGS
	#undef HASMULTILINEFUNCTIONS
	#undef HASEDITOR
	#define HASTINYBASICINPUT
	#undef HASLONGNAMES
	#undef HASHELP
	#undef HASFULLINSTR
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASPOWER
	#undef HASUSRCALL
	#endif

	/* a Tinybasic with float support */
	#ifdef BASICTINYWITHFLOAT
	#define HASAPPLE1
	#define HASARDUINOIO
	#undef HASFILEIO
	#undef HASTONE
	#undef HASPULSE
	#define HASSTEFANSEXT
	#define HASERRORMSG
	#define HASFLOAT
	#undef HASGRAPH
	#undef HASDARTMOUTH
	#undef HASDARKARTS
	#undef HASIOT
	#undef HASMULTIDIM
	#undef HASTIMER
	#undef HASEVENTS
	#undef HASERRORHANDLING
	#undef HASSTRUCT
	#undef HASMSSTRINGS
	#undef HASMULTILINEFUNCTIONS
	#undef HASEDITOR
	#define HASTINYBASICINPUT
	#undef HASLONGNAMES
	#undef HASHELP
	#undef HASFULLINSTR
	#undef HASLOOPOPT
	#undef HASNUMSYSTEM
	#undef HASPOWER
	#undef HASUSRCALL
	#endif

	/*
	* Language feature dependencies
	*
	* Dartmouth and darkarts needs the heap which is in Apple 1
	* IoT needs strings and the heap, also Apple 1
	*
	* String arrays need multi dimensional capabilities
	*
	* The structured language set needs ELSE from STEFANSEXT
	*
	*/
	#if defined(HASMULTILINEFUNCTIONS)
	#define HASDARTMOUTH
	#endif

	#if defined(HASDARTMOUTH) \|\| defined(HASDARKARTS) \|\| defined(HASIOT) \|\| defined(HASMSSTRINGS)
	#define HASAPPLE1
	#endif

	#if defined(HASSTRUCT)
	#define HASSTEFANSEXT
	#endif

	/* MS strings also bring the full INSTR */
	#if defined(HASMSSTRINGS)
	#define HASFULLINSTR
	#endif

	/* dependencies on the hardware */
	#if !defined(DISPLAYHASGRAPH)
	#undef HASGRAPH
	#endif