Cool. I really worry about emulation failing to have options to be faithful to real hardware limitations or faithfully reproduce bugs and artifacts of particular steppings and versions. On real hardware, I/O port instructions often require delay cycles before other operations can proceed. VGA monitors had an overscan area that could be set to a specific color in the palette, which is rarely emulated. Video tearing is rarely emulated properly. Snow and garbage that happen between video mode changes or boot cycles too. And, where's the degauss button? ;-P