The BBC and Master Computer Public Domain Library

8456 BASIC Keyword List

Submitted by Steve Fewell

Description:

The Keywords are listed one after the other. Each keyword contains the following parts
A) The Keyword itself
B) A 1-byte token value for the keyword (this value is always a negative value (>=&80) this
allows BASIC to easily determine when a Keyword stops and the token begins
(as to save space, the keywords are not stored as BASIC strings (which terminate with a
binary 0)).
C) A 1-byte flag value (this flag describes certain attibutes of the keyword and is used
by BASIC to syntax check the program and determine whether the keyword has been used
correctly or not.

The Keywords are listed in the order that BASIC evaluates keyword abbreviations.
I.e. AND is listed before ABS, so BASIC will interpret "A." as AND (not ABS).

The 1-byte flag associated with each Keyword has the following meanings depending
on which bit is set (a keyword may have a flag with many bits set at the same time):
Bit 0 - Conditional tokenisation (don't tokenise if followed by an alphabetic character).
    This flag indicates that the keyword can safely be used as the start of a variable name (without being
    tokenised as a keyword).
Bit 1 - Go into "middle of Statement" mode.
Bit 2 - Go into "Start of Statement" mode.
Bit 3 - FN/PROC keyword - don't tokenise the name of the subroutine.
Bit 4 - Start tokenising a line number now (after a GOTO, etc...).
Bit 5 - Don't tokenise rest of line (REM,DATA keyword, etc...)
Bit 6 - Pseudo variable flag - add &40 to token if fund at the start of a statement.
    I.e. this will apply to "PAGE=x" but not to "x=PAGE".
Bit 7 - Unused.

This values will be described at a later date, when the relevant routines are described.

This list is used for tokenising and de-tokenising (in REPORT/LIST) a program.

Note that the open bracket of many functions is included as part of the token,
so that when abreviating the function name (i.e. LE.) you must not include the open bracket.

Address of first char of Keyword	Keyword	Token	Flag (byte 7 first)
&8456	AND	&80	00000000
&845B	ABS	&94	00000000
&8460	ACS	&95	00000000
&8465	ADVAL	&96	00000000
&846C	ASC	&97	00000000
&8471	ASN	&98	00000000
&8476	ATN	&99	00000000
&847B	AUTO	&C6	00010000
&8481	BGET	&9A	00000001
&8487	BPUT	&D5	00000011
&848D	COLOUR	&FB	00000010
&8495	CALL	&D6	00000010
&849B	CHAIN	&D7	00000010
&84A2	CHR$	&BD	00000000
&84A8	CLEAR	&D8	00000001
&84AF	CLOSE	&D9	00000011
&84B6	CLG	&DA	00000001
&84BB	CLS	&DB	00000001
&84C0	COS	&9B	00000000
&84C5	COUNT	&9C	00000001
&84CC	COLOR	&FB	00000010
&84D3	DATA	&DC	00100000
&84D9	DEG	&9D	00000000
&84DE	DEF	&DD	00000000
&84E3	DELETE	&C7	00010000
&84EB	DIV	&81	00000000
&84F0	DIM	&DE	00000010
&84F5	DRAW	&DF	00000010
&84FB	ENDPROC	&E1	00000001
&8504	END	&E0	00000001
&8509	ENVELOPE	&E2	00000010
&8513	ELSE	&8B	00010100
&8519	EVAL	&A0	00000000
&851F	ERL	&9E	00000001
&8524	ERROR	&85	00000100
&852B	EOF	&C5	00000001
&8530	EOR	&82	00000000
&8535	ERR	&9F	00000001
&853A	EXP	&A1	00000000
&853F	EXT	&A2	00000001
&8544	EDIT	&CE	00010000
&854A	FOR	&E3	00000010
&854F	FALSE	&A3	00000001
&8556	FN	&A4	00001000
&855A	GOTO	&E5	00010010
&8560	GET$	&BE	00000000
&8566	GET	&A5	00000000
&856B	GOSUB	&E4	00010010
&8572	GCOL	&E6	00000010
&8578	HIMEM	&93	01000011
&857F	INPUT	&E8	00000010
&8586	IF	&E7	00000010
&858A	INKEY$	&BF	00000000
&8592	INKEY	&A6	00000000
&8599	INT	&A8	00000000
&859E	INSTR(	&A7	00000000
&85A6	LIST	&C9	00010000
&85AC	LINE	&86	00000000
&85B2	LOAD	&C8	00000010
&85B8	LOMEM	&92	01000011
&85BF	LOCAL	&EA	00000010
&85C6	LEFT$(	&C0	00000000
&85CE	LEN	&A9	00000000
&85D3	LET	&E9	00000100
&85D8	LOG	&AB	00000000
&85DD	LN	&AA	00000000
&85E1	MID$(	&C1	00000000
&85E8	MODE	&EB	00000010
&85EE	MOD	&83	00000000
&85F3	MOVE	&EC	00000010
&85F9	NEXT	&ED	00000010
&85FF	NEW	&CA	00000001
&8604	NOT	&AC	00000000
&8609	OLD	&CB	00000001
&860E	ON	&EE	00000010
&8612	OFF	&87	00000000
&8617	OR	&84	00000000
&861B	OPENIN	&8E	00000000
&8623	OPENOUT	&AE	00000000
&862C	OPENUP	&AD	00000000
&8634	OSCLI	&FF	00000010
&863B	PRINT	&F1	00000010
&8642	PAGE	&90	01000011
&8648	PTR	&8F	01000011
&864D	PI	&AF	00000001
&8651	PLOT	&F0	00000010
&8657	POINT(	&B0	00000000
&865F	PROC	&F2	00001010
&8665	POS	&B1	00000001
&866A	RETURN	&F8	00000001
&8672	REPEAT	&F5	00000000
&867A	REPORT	&F6	00000001
&8682	READ	&F3	00000010
&8688	REM	&F4	00100000
&868D	RUN	&F9	00000001
&8692	RAD	&B2	00000000
&8697	RESTORE	&F7	00010010
&86A0	RIGHT$(	&C2	00000000
&86A9	RND	&B3	00000001
&86AE	RENUMBER	&CC	00010000
&86B8	STEP	&88	00000000
&86BE	SAVE	&CD	00000010
&86C4	SGN	&B4	00000000
&86C9	SIN	&B5	00000000
&86CE	SQR	&B6	00000000
&86D3	SPC	&89	00000000
&86D8	STR$	&C3	00000000
&86DE	STRING$(	&C4	00000000
&86E8	SOUND	&D4	00000010
&86EF	STOP	&FA	00000001
&86F5	TAN	&B7	00000000
&86FA	THEN	&8C	00010100
&8700	TO	&B8	00000000
&8704	TAB(	&8A	00000000
&870A	TRACE	&FC	00010010
&8711	TIME	&91	01000011
&8717	TRUE	&B9	00000001
&871D	UNTIL	&FD	00000010
&8724	USR	&BA	00000000
&8729	VDU	&EF	00000010
&872E	VAL	&BB	00000000
&8733	VPOS	&BC	00000001
&8739	WIDTH	&FE	00000010

End of Tokeniser list, the following list is a continuation of the above for
LISTing/REPORT commands (It lists the Pseudo Variables with the +&40 added.

&8740	PAGE	&D0
&8746	PTR	&CF
&874B	TIME	&D1
&8751	LOMEM	&D2
&8758	HIMEM	&D3

The following token is only used by the REPORT command.

&875F

Missing [+ ASCII 32 (Space)]

&8D

00000000