Made the sdcard one the main one - should be stable now with pll fix
sd card version - not working, reverting main version to data_io
Switched mist_5200 to use sd card emulation. NB SD cart emulation does not work yet with this core, but problem identified and Till will be fixing. Thanks Till!
First cut 5200 support for MIST. Review if we can share with mist atari800 - with a generic.