SMSOS-v1.04 03.12.2019 1)Fixed palette lost during save state in sg-1000 games on gamegear 2)FM chip muting at reset (untested)
SMSOS-v1.03 04.09.2019 1)Supports 4MB ROMs (256Banks). Last 8 banks occupied by OS, so effective size is 248 banks. Feature works only in pair with FPGA core v02