yes some ATX motherboards do not support ps2 keyboard or mouse in true DOS, the BIOS must support DOS mode KB and mouse. One way to check is if the mouse and keyboard both work in the BIOS, but some board still have issues under DOS. The point with the PS/2 keyboard is that it doesn't work at all, …

I'm using a USB mouse and Keyboard and it works, but if I hold some keys for a certain time, it repeats the keys and make things unplayable. A keyboard is a keyboard. There's really not much you can do about that, except maybe look for a BIOS update – or get a different keyboard. The BIOS is …

Hey guys, I'm using the MS-DOS Mode Super Easy by PhilsComputerLab in my Windows 98 SE machine (ECS P4VMM2 v8.1/Pentium 4 2.8A/1GB DDR-266/ATI 9600 XT/Sound Blaster Live! CT4780), and I'm having issues with keyboard and mouse in some games like: Duke Nukem 3D, SimCity 2000 SE and others. I'm using a …