The following TeleDisk 2.15 boot disk images are available for the Altos 5-15AD:

CP/M 2.2 Boot Disk Image	Write to a 5.25" floppy disk using a 1.2M drive.
MP/M-II Boot Disk Image	Write to a 5.25" floppy disk using a 1.2M drive.
OASIS 5.6 Boot Disk Image	"SYSTEM" password unknown.  Please let me know if you figure it out!
???	If you have anything to contribute (software or documentation) please let me know and I will make it available on this web page.

Thanks to Don Maslin for providing the CP/M 2.2, and MP/M-II disk images!