 You alredy asked yourself why Sega32x and SegaCD need BIOS? (<b>B</b>asic <b>I</b>nput and <b>O</b>utput <b>S</b>ystem.)<br><br>Maybe the BIOS file is the &quot;Operational System&quot;... (I Looked in Gens, It have a space to insert Genesis BIOS.)<br><br>I Don&#39;t know how 68000 works... but if you look in a University Library, you might find some books explaining how to program and the Architeture of 68000... I Found some here... <br> 