Changes
/* Tests done */
Ecole.dsk does need the r52 reset instruction AND a RAM write when writing in ROM (RAM is beside ROM, hard to emulate with asynchronous RAM, MiST does use a hacked synchronous RAM done for that), but not all screen is displayed, music is OK in MiST.
Others bugs are about dsk format, in fact a dsk is uncompressed into RAM at startup, so all dsk access are direct: