Texas Instruments TI-89 - Bitmap PIC Images; Table 14.12: Data Object for a PIC

156
Chapter 14: Data Types
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
Description Bytes
Graph 2 Table Flags (not included if 3D mode) 1
➊
Description Value
Table connected to trace (on = 1, off = 0) 0x80
Table Independent Ask (on = 1, off = 0) 0x40
Graph 2 tblStart (not included if 3D mode) 10
➊
Graph 2
∆
tbl (not included if 3D mode) 10
➊
Graph 2 tblInput (including length [2 bytes] — may be zero) (not included if
3D mode)
variable
➊
GDB Tag 1
Table 14.11: Data Object for a Graph Database
(continued)
➊
This field is only present in a two graph mode graph database (i.e., Number of Graphs is
equal to 2).
➋
eye
Ψ
and ncontour are not present on the original TI
-
92. xscale, yscale, and zscale are not
system variables and are for internal use only (zscale was not present on the TI
-
92). The
system variable zscl is no longer used on the TI-89 / TI-92 Plus although it still exists for
compatibility with the TI
-
92.
➌
Differential Equation mode was not available on the original TI
-
92.
➍
TI
-
92 graph databases only contain the first four bytes of graph format data. The TI
-
92 3D
mode style flag is not used by the TI-89 / TI-92 Plus, which uses the seventh byte for 3D style
information. TI
-
92 graph databases do not use the 3D Expanded View flag since that was not
available on the original TI
-
92.
14.8. Bitmap PIC Images
Description Bytes
Data Length of PIC 2
Number of Rows in image 2
Number of Columns in image 2
Bitmap data (8 pixels per byte with the data bits going from most significant
to least significant which correspond to left to right pixels on the screen)
variable
PIC_VAR_TAG 1
Table 14.12: Data Object for a PIC