Hi,
It's funny you would mention that. I was actually the one who got the
author to port A2 to DOS, since I'd used it on Linux but didn't have my own
Linux box at the time. A2 is very good, for what it does. Unfortunately,
unless somebody has recently updated it, it only emulates an Apple II+ which
means no later versions of ProDos, no lower case input although lower case
output is supported, no 80-column mode, etc.
The version of A2 for DOS I have is located at
http://www.bluegrasspals.com/a2.zip
Jayson.