Help needed for Famicom Disk System

[Norkusa]

I installed a Famicom Disk System wheel on my HS setup (Shield TV) and I can't get any roms to boot up. Screen flashes black for half a second whenever I try to load one. Cannot load FDS roms in Retroarch either using Netopia or FCE cores. Has anyone here successfully added FDS to their android HS that can help?

I checked the working systems list here and it looks like it should run ok. I'm using Nestopia to emulate, so I copied over the settings from my NES wheel and edited them for FDS:

path=H:\hyperspin\emulators\Famicom Disk System\
rompath=Emulators/Famicom Disk System/roms/
userompath=true
exe=com.retroarch/com.retroarch.browser.retroactivity.RetroActivityFuture
romextension=fds
parameters=cores/nestopia_libretro_android.so

All my paths seem correct, so these are the only things I can think of that might be the problem:

-FDS emulation isn't working on HS Android

-fds rom extensions can't be used. Although I tried .zip's too and those still didn't work.

-bios is needed but I didn't see any mention of HS requiring it.

-Some kind of 'system disk' is needed to boot the roms (kind of like TG-16 CD's)

[Norkusa]

Ok, I just figured it out 10 min after I posted my question. Quick Google search said I needed a 'disksys.rom' for FDS games. Found it & put it in my bios folder and everything is working good now.  

EDIT: Anyone know how to load Side B when prompted?