Non-blocking CD-ROM archive decompression
 

Toni, is possible for you, implement non-blocking archive decompression for CD-ROM images compressed with ZIP/RAR/7Z? In 2.8.1 it was in some way possible, albeit AmigaOS was always getting locked waiting for the archive to be decompressed.

Not possible. Zip support has special case where only data track is compressed first and audio tracks on the fly in background but it won't help if data track is very big. (only zip because 7z and others are usually solid compressed which won't allow per-file decompression)

CHD compression is the only one that is designed for on the fly decompression. (EDIT: chdman that comes with mame can be used to create chd images)