TI-82 Link Protocol Guide v1.0 - Tokens and Character Codes

TI-82 Tokens

In order to save space and execution time, the TI-82 tokenizes all BASIC programs, equations and commands before running or evaluating them. Rather than trying to interpret multiple-character command names in real-time, all simple commands are compressed down to one or two bytes. All possible tokens that can exist in a program are shown below. Blue-colored squares link to a note describing the token's function. Red-colored squares link to a separate table of two-byte tokens starting with the original byte (5Ch, 5Dh, 5Eh, 60h, 61h, 62h, 63h or 7Eh). Black-colored squares have no known function.

Underscore characters signify space characters.

TI-86 Tokens	Least Significant Digit
Most Significant Digit		0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
	0		DMS	Dec	Frac		BoxPlot	[	]	{	}	r	°	-1	2	T	3
	1	(	)	round(	pxl-Test(	augment(	rowSwap(	row+(	*row(	*row+(	max(	min(	RPr(	RP(	PRx(	PRy(	median(
	2	randM(	mean(	solve(	seq(	fnInt(	nDeriv(		fMin(	fMax(	_	"	,		!	CubicReg_	QuartReg_
	3	0	1	2	3	4	5	6	7	8	9	.	E	_or_	_xor_	:	note
	4	and	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
	5	P	Q	R	S	T	U	V	W	X	Y	Z		more	more	more	prgm
	6	more	more	more	more	Radian	Degree	Normal	Sci	Eng	Float	=	<	>
	7	+	-	Ans	Fix_	Split	FullScreen	Func	Param	Polar	Seq	IndpntAuto	IndpntAsk	DependAuto	DependAsk	more
	8			*	/	Trace	ClrDraw	ZStandard	ZTrig	ZBox	Zoom_In	Zoom_Out	ZSquare	ZInteger	ZPrevious	ZDecimal	ZoomStat
	9	ZoomRcl	PrintScreen	ZoomSto	Text(	_nPr_	_nCr_	FnOn_	FnOff_	StorePic_	RecallPic_	StoreGDB_	RecallGDB_	Line(	Vertical_	Pt-On(	Pt-Off(
	A	Pt-Change(	Pxl-On(	Pxl-Off(	Pxl-Change(	Shade(	Circle(	Horizontal_	Tangent(	DrawInv_	DrawF_		rand		getKey	'	?
	B	-	int_	abs_	det_	identity_	dim_	sum_	prod_	not_	iPart_	fPart_			3	ln_	e^
	C	log_	10^	sin_	sin-1_	cos_	cos-1_	tan_	tan-1_	sinh_	sinh-1_	cosh_	cosh-1_	tanh_	tanh-1_	If_	Then
	D	Else	While_	Repeat_	For(	End	Return	Lbl_	Goto_	Pause_	Stop	IS>(	DS>(	Input_	Prompt_	Disp_	DispGraph
	E	Output(	ClrHome	Fill(	SortA(	SortD(	DispTable	Menu(	Send(	Get(	PlotsOn_	PlotsOff_		Plot1(	Plot2(	Plot3(
	F	^		1-Var_Stats_	2-Var_Stats_	LinReg(a+bx)_	ExpReg_	LnReg_	PwrReg_	Med-Med_	QuadReg_	ClrList_	ClrTable	Histogram	xyLine	Scatter	LinReg(ax+b)_

Note: Token 3Fh is the hard return character.

System Variables	First Byte
Second Byte		5C	5D	5E	60	61	62	63
	00	[A]	L1		Pic1	GDB1		ZXscl
	01	[B]	L2		Pic2	GDB2	RegEq	ZYscl
	02	[C]	L3		Pic3	GDB3	n	Xscl
	03	[D]	L4		Pic4	GDB4		Yscl
	04	[E]	L5		Pic5	GDB5	x	UnStart
	05		L6		Pic6	GDB6	x2	VnStart
	06						Sx	Un-1
	07						x	Vn-1
	08						minX	ZUnStart
	09						maxX	ZVnStart
	0A						minY	Xmin
	0B						maxY	Xmax
	0C							Ymin
	0D						y	Ymax
	0E						y2	Tmin
	0F						Sy	Tmax
	10			Y1			y	min
	11			Y2			xy	max
	12			Y3			r	ZXmin
	13			Y4			Med	ZXmax
	14			Y5			Q1	ZYmin
	15			Y6			Q3	ZYmax
	16			Y7			a	Zmin
	17			Y8			b	Zmax
	18			Y9			c	ZTmin
	19			Y0			d	ZTmax
	1A						e	TblMin
	1B						x1	nMin
	1C						x2	ZnMin
	1D						x3	nMax
	1E						y1	ZnMax
	1F						y2	nStart
	20			X1T			y3	ZnStart
	21			Y1T			n	Tbl
	22			X2T				Tstep
	23			Y2T				step
	24			X3T				ZTstep
	25			Y3T				Zstep
	26			X4T				X
	27			Y4T				Y
	28			X5T				XFact
	29			Y5T				YFact
	2A			X6T				TblInput
	2B			Y6T
	40			r1
	41			r2
	42			r3
	43			r4
	44			r5
	45			r6
	80			Un
	81			Vn

7E XX Tokens	Least Significant Digit (second byte)
Most Significant Digit		0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
	0	Sequential	Simul	PolarGC	RectGC	CoordOn	CoordOff	Connected	Dot	AxesOn	AxesOff	GridOn	GridOff	LabelOn	LabelOff	Web	Time

TI-82 Character Codes

The TI-82 follows the ASCII standard for most of the normal printable characters - those in the range 32 (20h) to 126 (7Eh) - with the exception of the left bracket. All other possible characters take the place of control characters (0 to 31) and extended ASCII characters (127 to 255).

All characters and their character codes in the TI-82 6x8-pixel home screen font are shown here:

All characters and their character codes in the TI-82 6x6-pixel graph screen font are shown here:

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