HighlightRect

Highlights a rectangular area of the screen by changing non-black pixels to a specified color. The light cyan color used by TI-OS when highlighting memory entries is $7FFE. See also UnhighlightRect.

Address: $0219D0

Inputs:

hl: Top-left X coordinate of the area to highlight.
de: Bottom-right X coordinate of the area to highlight.
b: Top-left Y coordinate of the area to highlight.
c: Bottom-right Y coordinate of the area to highlight.
Value at fillRectColor contains 16-bit color to highlight with.

Outputs:

Draws to the screen.

Destroys:

af