I put for download configuration for Atari system
By default boot is in 1280*720 16 bits but you can choose another resolution at start during 6 seconds.
You can find archive here:
To use it :
Format your SD card or your compact flash in FAT16, then copy the content of V4SA folder inside your card.
You have now to boot it.
Someone report me have issue with Willem archive, looks like partition is corrupted or something not work properly during copy, I don't know, system have a lot of read error issue, with this way you should have less possible corruption drive I think.
For people with mouse wheel recognized by V4, wheel should work.