83Plus:BCALLs:4549

Synopsis

Official Name: ClrScrn

BCALL Address: 4549

Clears the display. If textShadow is in use clears it also.

Inputs

None

Outputs

None

Registers Destroyed

• DE,HL

Comments

set appTextSave,(IY + appFlags) if the textShadow is to be cleared also G-T and HORIZ split screen modes will affect how this routine maps the coordinates specified. To avoid this turn off the split screen modes. set grfSplit, (IY + sGrFlags) if horizontal split mode set set vertSplit, (IY + sGrFlags) if graph-table split mode set set grfSplitOverride, (IY + sGrFlags) to ignore split modes