TI 83 Plus Assembly/Appendix A
This Appendix shows information about many ROM Calls that can be used when programming in TI 83 Plus Assembly.
Tests if the TI−83 Plus is set to G-T (graph-table) display mode.
NZ is set if G-T is set
B_Call(Bit_VertSplit) JR NZ,Screen_is_Split
Checks if either horizontal or G-T split screen modes are active.
grfSplitOverride, (IY + sGrFlags) = 1 to ignore split mode settings
NZ is set if split screen mode is active