Texas Instruments TI89 Developer Guide - Page 198
Bitmap PIC Images, Description, Bytes, Value, Table 14.11: Data Object for a Graph Database
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156 Chapter 14: Data Types 14.8. Description Bytes Graph 2 Table Flags (not included if 3D mode) 1 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 Graph 2 ∆tbl (not included if 3D mode) 10 Graph 2 tblInput (including length [2 bytes] - may be zero) (not included if variable 3D mode) GDB Tag 1 Table 14.11: Data Object for a Graph Database (continued) This field is only present in a two graph mode graph database (i.e., Number of Graphs is equal to 2). eyeΨ 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. Differential Equation mode was not available on the original TI-92. 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. 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 variable to least significant which correspond to left to right pixels on the screen) PIC_VAR_TAG 1 Table 14.12: Data Object for a PIC TI-89 / TI-92 Plus Developer Guide Not for Distribution Beta Version January 26, 2001