MetalliC - I've tried Qarx and everything looks good when viewing the hi-scores except for some strange artifacts at very top left of the border (See Qarx screenshot (Blue arrow pointing to the problem)). I'm confused as to why I am seeing these artifacts as I thought I had the border timings sorted. I've just gone into my loft and dug out my old 48K+ and +2 as I’d like to see how various games/demos/ULATestPrograms run on original hardware in comparison to mame (I’ve found screenshots of other Speccy Emulators running ULA test software on the web, but they all seem to give slightly conflicting results, so I’m not sure what I should trust). I shall post my screenshots and findings smile