I note both 32/64 bit retroarch remove Mame core 2014-2016
The problem is with Mame “current” newest core We can’t use l2 or r2 in screen touch pad open “Mame menu” for enable cheat and see all the game info under this “Mame menu”
In 2014 and 2015 core we can use l2 open “mame menu”
So where to download these old core?
I can’t find any in build retroarch bot https://buildbot.libretro.com/