The total memory is 580KB, however, remember that your registration banks, styles, songs can all be stored on floppy disk rather than user banks, therfore allowing you to have an unlimited amount of backup ready to load or play at anytime. If you keep storing banks of registration memories into the user area, yes you will eventually run out of memory but if you copy or cut and paste these to floppy disks, you are only using up the floppy disks memory and not the 580KB. The same thing applies to styles. Don't keep putting them into user. Instead, save them on floppy and play them directly from disk.
George Kaye
Kaye's Music Scene
Reseda, California