I can't see Abandonware DOS using [name a browser]
I usually test Abandonware DOS on a lot of different browsers: Internet Explorer (versions 9+), Google Chrome and Firefox on Windows an (to a lessere extent) on Linux.
Abandonware DOS is mobile friendly (responsive!) but I don't often test it on tablets or smartphones. Feel free to contact me if you see something wrong on Abandonware DOS.
And no, I don't do testing on Internet Explorer 8.