Texas Instruments TI-89 Developer's Guide

154
Chapter 14: Data Types
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
Description Bytes
Graph 1 Formats 8
➍
Description Value
2 bytes: Flags
Seq Mode Axes: Time = 1,
Custom or Web = 0
0x8000
Seq Mode Axes: Web = 1,
Custom or Time = 0
0x4000
Seq Mode Web: Trace = 0, Auto = 1 0x2000
3D Expanded View: Off = 0, On = 1 ox0800
TI
-
92 3D Mode Style: WireFrame = 1,
Hidden Surface = 0
0x0100
Coordinates: Off = 1, On = 0 0x0080
Graph Order: Sequential = 0, Simul = 1 0x0040
Grid: Off = 0, On = 1 0x0020
Axes: Off = 1, On = 0 0x0010
3D Mode Axes: Normal = 0, Box = 1 0x0008
Labels: Off = 0, On = 1 0x0004
Leading Cursor: Off = 0, On = 1 0x0002
Coordinates: Rect = 0, Polar = 1 0x0001
1 byte: x axis for custom axes in Seq or DifEq Modes see below
1 byte: y axis for custom axes in Seq or DifEq Modes see below
Seq Mode: n = (-1), u = 0,
specific u# function = 1-99
DifEq Mode: t = 0, y = 100,
specific y# function = 1-99, y' = -100,
specific y#' = (-1) – (-99)
2 bytes: Flags
DifEq Mode Axes: Time = 0, Custom = 1 0x0010
DifEq Fields: FLDOFF = 0, SLPFLD or
DIRFLD = 1
0x0004
DifEq Fields: SLPFLD = 0, DIRFLD = 1 0x0002
DifEq Solution Method: RK = 0, Euler = 1 0x0001
1 byte: TI-89 / TI-92 Plus 3D Mode Style
Wire Frame 0
Hidden Surface 1
Contour Levels 2
Wire and Contour 3
Implicit Plot 4
1 byte: Unused
Table 14.11: Data Object for a Graph Database
(continued)

Texas Instruments TI-89 Specifications

General

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA