Apple DOS 3.2 was released in 1979 to reflect major changes in computer booting methods that were built into the successor of the Apple II, the Apple II Plus. Instead of the original Integer BASIC, the Apple II Plus firmware included the newer Applesoft II floating point BASIC. The new firmware also had an auto-start feature which would automatically find a disk controller and boot from it when the system was powered up—earning it the name Autostart ROM.