The RaSCSI project provides open hardware and software for the Raspberry Pi, in order to emulate numerous SCSI device types. The RaSCSI hardware extends the Raspberry Pi with a SCSI interface.
Raspberry PI Zero WH with RaSCSI board connected to a TT
With the RaSCSI software a single Pi emulates several devices like hard disks, CD-ROM drives, printers, network adapters or a realtime clock. This way you can easily add SCSI devices or a memory card reader to your Atari. All emulated devices are ICD compatible, which is important for the MegaSTE or STs/STEs without ICD compatible host adapter.
RaSCSI also works with Linux-68k and Atari's SVR4 Unix, by the way.
Due to the RaSCSI client tools the Atari is the only platform that can exploit the full RaSCSI functionality. Files can be printed via RaSCSI and a realtime clock is available.
With the RaSCSI Control app the virtual devices, the image files and much more can be conveniently managed. The app can also shut down RaSCSI and the Raspberry Pi.