Why pc engine roms doesnt work?

[8bit_astronaut]

<span style="color: #737c85; font-family: 'Open Sans', sans-serif; font-size: 12px; line-height: 26px; background-color: #fbfbfb;">I downloaded 3 versions of the syscard3.pce, also, tried a lot of games but doesnt work.</span><br style="box-sizing: border-box; color: #737c85; font-family: 'Open Sans', sans-serif; font-size: 12px; line-height: 26px; background-color: #fbfbfb;" /><span style="color: #737c85; font-family: 'Open Sans', sans-serif; font-size: 12px; line-height: 26px; background-color: #fbfbfb;">Why? i don’t know.</span><br style="box-sizing: border-box; color: #737c85; font-family: 'Open Sans', sans-serif; font-size: 12px; line-height: 26px; background-color: #fbfbfb;" /><span style="color: #737c85; font-family: 'Open Sans', sans-serif; font-size: 12px; line-height: 26px; background-color: #fbfbfb;">I just want to play chi no rinne but it looks imposible :/</span> <span style="color: #737c85; font-family: 'Open Sans', sans-serif; font-size: 12px; line-height: 26px; background-color: #fbfbfb;"> </span>