Chui has updated his Dreamcast port of CaSTaway. This Atari ST emulator is a pretty solid release and has the following changes:
Overscan bottom border render. Stored queues improvements. Medium resolution fixed. Some input fixes. Atari ST video 50/60 switch support. No CRC calculation when cache not present. Multidisk support. General improvements.
AEP-Emu (DE/EN)
DMG Page (DE)
Indie Retro News (EN)
Retroguru (EN)