TI-58C Clone

[Marc van Lemmen]

Quote:For [OP] [4D],[OP] [4E],[OP] [4F] :
The screen is composed of 2 lines of 15 characters.
The columns are numbered from 0 to 15 (X register)
The lines are divided into 3 rectangles numbered from 3 to 5 for the upper line and from 0 to 2 for the lower line. (T register)
So:

That makes sense, I now see the logic. Since horizontal 'works normal' I thought vertical works the same way.