INTRODUCTION



(e.g.,the system clock, which is a three-byte location in high-middle-
low order), you may be able to accomplish your ends by considering
each byte individually. Also, we have made no discussion here of the
Atari floating point format, which is truly accessible in any reasonable
fashion only from assembly language, and which has little pertinence
to this memory map in any case.
     I think I would like to add only one more comment, which will be
in the form of a caution: If you aren't sure what you are doing when
changing or examining memory locations, make sure that your
program in memory is backed up (on disk or cassette), and then make
sure that you have "popped" (unloaded) your disks and/or tapes. It is
unlikely that changing memory will cause problems affecting your
saved files, but why take chances. (And, if you make a mistake or are
in doubt, re-boot the disk; don't just hit RESET, since that won't
necessarily clean up all your errors.)
     Good luck and happy mapping.