On Mon, Dec 12, 2016 at 11:20 PM, Sean Conner <spc at conman.org> wrote:
   If you have a modern system, you could always download a 6502 emulator
 and
 test it on that.  Such a tactic wasn't even unheard of in the day---if I
 recall correctly, that's how Gates & Co. tested their first BASIC---on an
 emulated 8080.
 Circa 1982, I was developing Atari 800 software on a on emulator I wrote 
in FORTRAN
on a VAX.
-- Charles