Cursor's Y Position At the End

If the display is in the last line, then the cursor's y position stays the same, even after the last line is full. More formally,

For example, if cursor y at time 18 = 11, then cursor y at time (18 + 1) = cursor y at time 18

This simplifies to:

cursor y at time 19 = 11

At the bottom of the screen, the cursor's y position stays at the maximum value, and all the rows move up by one to make room for a new line.

Try running the simulator below. When the text completely fills the screen, the display rows move up by 1 and the cursor y value remains at 11.

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