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