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ATARI Light Pen Operator's Manual
light emitted by the characters during its selection attempt. Lines
250-320 test the pen inputi looking for the correct response* print an
appropriate message to the user* then return either to request another
attempt (to line 250> or to calculate a neu) problem (line 100). The
incorrect response loop includes a do-nothing delay loop at line 310.
This device effectively highlights particular characters because they
retain their luminance against the dark background.
The program concludes with the PENBUF loader at lines 9000-9090.
Appendix G of this manual explains how to save some time and space by
using the PENBUF loader from the 8K PALLET demo program.
A Teaching Aid - 41
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