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

appTextSave,(IY + appFlags) = 1 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. grfSplit, (IY + sGrFlags) = 1 if horizontal split mode set vertSplit, (IY + sGrFlags) = 1 if graph-table split mode set grfSplitOverride, (IY + sGrFlags) = 1 to ignore split modes