In Emulators / NES ROMs

Hi! I got the Super Mario World pirate for nes! But I cant use it! i've tried on JNES and it gives me a mapper 90 error thing! I'v yet to try on fceu but ill give u back results

did you try redownloading it to see if the download was the problem?

was t a famicom NES ROM? try FCE Ultra.

yea i guess it was not compatible with JNES i tried with FCE ultra and it worked perfectly!