Quoted from erikie:

DCS is now working. The sound roms for RFM which are found on the internet are not correct. Luckily I had already dumped my own roms.
In mame I had to really underclock the mediaGX to get the emulation to run on 100% otherwise the ADSP (sound CPU) is not getting enough cycles so it will not really work. The downside is that the graphics are not as smooth as they should be.
Really need a better emulation system to get some performance.
So I will have a look and try to get things working in qemu just like nucore did. Can't be that hard with already a working mame version

Quoted from erikie:

I hope to add my code into the mame repository soon. Need to create a pull request. More people can then optimize my code. I am very certain that improvements can be made. However my main goal was to get things working

Quoted from erikie:

Graphics now work, not as fast as I would like. Need to rework this. Switching between machines is pretty easy by modifying a text file at the moment.
No DCS (yet). Console access works nicely.
I have a new pcie LPT adapter on my desk now with an extra cable. Also an LPT usb cable. Lets see if that would be possible. Would be need to just plug in the usb in the computer and db25 in the driver board.
I have a couple of spare driver boards to play with at home [quoted image][quoted image][quoted image]

Quoted from erikie:

Sound works now properly. Going to test this code soon on the machine itself. Keep you all posted.