Booting straight to the NMI menu is not normal and has not been reported, so it should be some issue with the emulator. esxDOS works the same on 48/128/+3, but you will not get the 128/+3 menu - it boots in USR0 mode (48K editor with access to 128K ram). What happens if you choose a +2 instead of a +3 ?

I am new here and I have a question regarding divide plus.
I have bought a  divide plus unit yesterday and while it is being shipped,
I am experimenting with emulation to see how it would work.

I successfuly configured ZX Spin for divide and esxdos, and it boots up and
seems work properly for a 48k machine. But when I set the model to a +3,
when it boots up it enters the NMI mode immediately. This would be fine too,
but when I hit space to exit NMI mode, the screen goes black and it goes
back into NMI mode again. (The file selector appears)
I have tried hitting space several times and it does go to the +3 boot menu sometimes
but I was not able to discover how to do this on will. (It just happens "accidentally")
My question is: how can we go to the +3 boot menu?
(Is this kind of boot up to nmi mode is normal?)

Maybe this is just an emulation problem, but I am not sure 100%

Is there more emulators that can emulate the divide plus?
I have tried fuse on windows (1.1.1) but I was not able to configure it.

Thanks a lot for your help guys, can't wait my divide plus to arrive. :-)

Tamas