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Introducing ZuluSCSI Ultra Wide OSHW - A fully open source Ultra Wide SCSI storage emulator

Posted by: rabbitholecomputing on 2026-01-19 20:09:40 Approximately six months ago, we introduced ZuluSCSI Wide, our highest-performance 16-bit Ultra Wide SCSI emulator. Today, I'm pleased to announce the release of ZuluSCSI Ultra Wide OSHW, a true 16-bit Ultra Wide SCSI emulator, as a lower-cost alternative to our commercial ZuluSCSI Wide hardware. KiCad 9 design files, schematics, gerbers, and JLCPCB-compatible BOM can be found at https://github.com/ZuluSCSI/ZuluSCSI-Ultra-Wide-OSHW-RP2350B. As with the commercial version of ZuluSCSI Ultra Wide OSHW also includes a dedicated hardware eject button, which can be used to send eject commands to one virtual SCSI CD-ROM drive. ZuluSCSI Wide also supports 16-bit initiator mode, allowing you to read data from 16-bit Wide SCSI devices without the need for any adapters.

Posted by: eharmon on 2026-01-20 20:01:44 What's the difference in capabilities versus the normal Wide?

Posted by: rabbitholecomputing on 2026-01-21 08:13:48 What's the difference in capabilities versus the normal Wide? Performance-wise, there should not be any difference at all. ZuluSCSI Wide OSHW design uses Chinese-brand microSD card sockets and buttons, as well as a different bus transceiver and SCSI termination circuitry.

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