Virtual Super System (VSS) is an Atari 5200 Super System emulator for MSDOS. VSS needs a 486 or greater processor with 1 Meg of memory and a standard VGA card to run. The emulator is still a little slow, so the faster the processor the better. On my Cyrix 133Mhz machine with PCI video card it runs at normal speed with sound and no frame skipping.