Chapter 2: TI-83 Plus Specific Information 85
TI-83 Plus Developer Guide Third Release May 28, 2002
Like the on/off bytes, the type bytes have a second purpose. The high four bits of the
type bytes determine the mark or icon used in the stat plot.
0 = Box icon
1 = Cross icon
2 = Dot icon
Each stat plot has three five-byte locations to store the names of lists used in the plot.
The list names do not include tVarLst, and must be zero-terminated if less than five
bytes.
SavX1List
Plot 1 X list
SavY1List
Plot 1 Y list
SavF1List
Plot 1 Frequency List
SavX2List
Plot 2 X list
SavY2List
Plot 2 Y list
SavF2List
Plot 2 Frequency List
SavX3List
Plot 3 X list
SavY3List
Plot 3 Y list
SavF3List
Plot 3 Frequency List
Split screen settings will affect how plots are drawn. System errors will be generated if
the plots are not set up correctly.
Drawing Routine Specifics
The following sections cover drawing pixel coordinates, drawing to a split screen, and
drawing routines.
• Drawing pixel coordinates
The display is 96 pixels wide by 64 pixels high.
Fig. 2.12 shows the layout of the pixels along with the X and Y coordinate scheme
used by drawing routines.
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