Gamepad/ input plugins for Fighting Games

[TheSouthAzn]

When I play a game like street fighter ex2 plus or tekken 3, the quarter-circle forward motion doesn't work too well. On my playstation, a quick "down, right + punch" combination throws a hadoken in street fighter, but on the emulator the down-right diagonal doesn't register when using the same method.

Is this a problem with my gamepad (Dragon PC Double Powerbox 2 psx-to-pc adapter with the original playstation controller), or am I using the wrong input plugin for epsxe?

Can anyone do the "hadoken" move by just pressing "down, right + punch" - just like in the original playstation - with your gamepad and emulator? If so, may I ask which gamepad, emulator, and input plugin you're using?

Thanks in advance.