System variables

Address	Length	Description
23552	8	KSTATE - Used in reading the keyboard
23560	1	LAST-K - Last key pressed
23561	1	REPDEL - Time that a key must be held down before it repeats
23562	1	REPPER - Delay between successive repeats of a key held down
23563	2	DEFADD - Address of arguments of user defined function
23565	1	K-DATA - Second byte of colour controls entered from keyboard
23566	2	TVDATA - Colour, AT and TAB controls going to television
23568	38	STRMS - Addresses of channels attached to streams
23606	2	CHARS - 256 less than address of character set
23608	1	RASP - Length of warning buzz
23609	1	PIP - Length of keyboard click
23610	1	ERR-NR - One less than the error report code
23611	1	FLAGS - Various flags to control the BASIC system
23612	1	TV-FLAG - Flags associated with the television
23613	2	ERR-SP - Address of item on machine stack to use as error return
23615	2	LIST-SP - Return address from automatic listing
23617	1	MODE - Specifies K, L, C, E or G cursor
23618	2	NEWPPC - Line to be jumped to
23620	1	NSPPC - Statement number in line to be jumped to
23621	2	PPC - Line number of statement being executed
23623	1	SUBPPC - Number within line of statement being executed
23624	1	BORDCR - Border colour
23625	2	E-PPC - Number of current line
23627	2	VARS - Address of variables
23629	2	DEST - Address of variable in assignment
23631	2	CHANS - Address of channel data
23633	2	CURCHL - Address of information used for input and output
23635	2	PROG - Address of BASIC program
23637	2	NXTLIN - Address of next line in program
23639	2	DATADD - Address of terminator of last DATA item
23641	2	E-LINE - Address of command being typed in
23643	2	K-CUR - Address of cursor
23645	2	CH-ADD - Address of the next character to be interpreted
23647	2	X-PTR - Address of the character after the '?' marker
23649	2	WORKSP - Address of temporary work space
23651	2	STKBOT - Address of bottom of calculator stack
23653	2	STKEND - Address of start of spare space
23655	1	BREG - Calculator's B register
23656	2	MEM - Address of area used for calculator's memory
23658	1	FLAGS2 - More flags
23659	1	DF-SZ - The number of lines in the lower part of the screen
23660	2	S-TOP - The number of the top program line in automatic listings
23662	2	OLDPPC - Line number to which CONTINUE jumps
23664	1	OSPCC - Number within line of statement to which CONTINUE jumps
23665	1	FLAGX - Various flags
23666	2	STRLEN - Length of string type destination in assignment
23668	2	T-ADDR - Address of next item in parameter table
23670	2	SEED - The seed for RND
23672	3	FRAMES - Frame counter
23675	2	UDG - Address of first user defined graphic
23677	2	COORDS - Coordinates of last point plotted
23679	1	P-POSN - Column number of printer position
23680	2	PR-CC - Address of next position for LPRINT to print at
23682	2	ECHO-E - Column and line number of end of input buffer
23684	2	DF-CC - Address in display file of PRINT position
23686	2	DF-CCL - Like DF-CC for lower part of screen
23688	2	S-POSN - Column and line number for PRINT position
23690	2	S-POSNL - Like S-POSN for lower part of screen
23692	1	SCR-CT - Scroll counter
23693	1	ATTR-P - Permanent current colours
23694	1	MASK-P - Used for transparent colours
23695	1	ATTR-T - Temporary current colours
23696	1	MASK-T - Temporary transparent colours
23697	1	P-FLAG - More flags
23698	30	MEMBOT - Calculator's memory area
23728	2	NMIADD - Non-maskable interrupt address
23730	2	RAMTOP - Address of last byte of BASIC system area
23732	2	P-RAMT - Address of last byte of physical RAM
23734	21	Channel information