Depending on the OS you are using you can map a DF2 to a DF1 (or for that matter an SD0 or RAD) using the DEVS:NSDPatch.cfg program that when processed by SetPatch will setup these associations. I use it to map DF1 to my SD0 and my parallel.device to my lpr.device. I could give more specifics but I'm in bed typing this on my iPhone while a big white cat sits on my chest.
The instructions are listed in NSDPatch.cfg file; it is in text that is parsed into mapping functions. I know it works in OS 3.9 and 4.1 but I use the other OS so little I don't know about them. It works so well that other programs never know that the device is being mapped elsewhere. Example, ADF-Blitz only uses physical drives DF0 to DF3, but my A4000 has only one floppy drive, so I mount a SD0 disk (easier to get rid of than RAD0 and map it as DF1; simply renaming it to DF1 will not work, but the remap does.
