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LAB X-1 Tutorial Support Page
25 October '06
25 Oct 06.
LCD readout problems.  Incorrect data

When you print to the LCD, what was already in the display is written over.  If the data takes up less space than what was already on display, those items that are not written over will remain visible.  Try the following program segment to see what happen.

LCDOUT $FE, $80,"
First thing written"
LCDOUT $FE, $80,"

The result will be
Secondng written

To clear the remaining part of the message, print spaces to cover the first message
A second line that was
,"Second                    "
would fix the problem.

On this web page I post relevant answers to questions and other information of interest to the users of the Tutorial book.  This pages is updated as questions come in so you may want to flag this as a site you check on frequently as you learn about your LAB-X1 board.