Controller
I played with a mobile controller
The name of the controller is Njoy tech
You can search it on this page www.njoytech.com
The controller have a good quality, I've played with it like 3 or 4 years and it still good

Cs1. 6 on ppsspp
If you want to play cs 1.6 on ppsspp just search on youtube cs 1.6 psp, download the eboot, and then search for it in the ppsspp (also, you will need to change the model of the ppsspp, go to preferences, then system, and go down and go to psp settings, and go to "Model of the psp" and change it to PSP 2000/3000)