DOS 3.2, 3.2.1 and 3.3: Which version is this?

Check two locations to determine which version of DOS your Apple is running.
These addresses are for a 48K Apple; therefore, subtract $4000 (16384) for a 32K system.

Addresses
DOS
$9D02 (-25342)
$BD84 (-17020)
3.2
$81 (129)
$D0 (208)
3.2.1
$81 (129)
$AE (174)
3.3
$81 (129)
$0B ( 11)
Published Date: Feb 18, 2012