is possible download reicast core in retroarch? android version? if is possible how?
Not possible, the Android port is still in the works.
You guys said we’d get it in a week two years ago. What happened?
The author was working on it and then dropped it /shrug
That’s unfortunate 
it’s would be so nice if someone could port it
i am currently using Reicast as a standalone on Fire Tv and it works quite well.
however also Reicast never made it officailly to R7 build … so you should try to use one of the later builds and NOT R6
There’s little to no advancements in the builds. They are the same in terms of bugs, lack of options and compatibility as those old official releases. A Retroarch core could bring some much needed options (like using native resolution) that would make some games playable without glitches.
Hope a core is out for Retroarch soon cause standalone reicast nightlies won’t run games at all for me while the stable build from google play runs the games but the widescreen option ain’t working ugh… And touch controls are messed up in r6, I have to touch a bit to the right from where the touch button is located to make the button work… Which is fixed in the nightlies lol