BlueSCSI Ultra & Ultra Wide

eric

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Sep 2, 2021
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We're starting the year with a bang! Today we're announcing two new versions of BlueSCSI: Ultra and Ultra Wide. These new models support faster ultra wide SCSI connections to better support more high-end workstations and SCSI cards. These are more than iterative updates and continue our 100% original hardware designs and GPL firmware.

BlueSCSI Ultra and Ultra Wide PreProduction PCBs

BlueSCSI Ultra and Ultra Wide are next-generation, open-source SCSI emulators designed for higher-end vintage systems, delivering faster SD card performance, new audio capabilities, and expanded hardware features while preserving BlueSCSI's simplicity and ease of use. Ultra supports 50-pin Narrow SCSI, while Ultra Wide adds 68-pin Wide (and upcoming SCA) support for workstations and servers from the early-to-mid 1990s. Both models feature an integrated RP2350B, USB-C, 16 MB of flash, I²S CD audio (via an optional audio board), web-based configuration via front-panel integration, enhanced power protection, and significantly faster SD transfers through dynamic voltage switching. These are not incremental updates, but a major evolution of BlueSCSI's original hardware platform—continuing its GPL firmware tradition and commitment to open, user-friendly design.

--- See announcement page for full details --- https://bluescsi.com/ultra
 

Trash80toG4

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Apr 1, 2022
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UltraWide for my 81/110 JackHammer? Is that an internal or external cable setup, looks external? Assuming it'll seem quicker due to near instantaneous response times, but throughput will be higher bandwidth with SCA Spinners for VidCap etc?

Love it!
 

Fizzbinn

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Nov 29, 2021
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Great stuff! I see there are other cool improvements in the new "Ultra" hardware design but wondering if performance wise you could expect the same/very similar performance as BlueSCSI v2 with a Pico2 (and with Ultra SCSI Fast20 OverClock) as it uses the same RP2350 chip? Do the SD Card Improvements of the new design give extra overhead for more consistent 20MBps performance?
 
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Androda

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Is that an internal or external cable setup, looks external
With Wide SCSI, I believe the internal and external 68 pin cable ends are identical. This connector plugs into my internal Wide SCSI cable just fine. As mentioned in the announcement, we're seeing 30+ megabyte per second read speeds with some systems and SD cards. This is very system and SD card dependent though, I've tested some "nice" SD cards and only gotten 23 megabyte per second reads, where other "cheaper" ones were faster.
 

Androda

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Do the SD Card Improvements of the new design give extra overhead for more consistent 20MBps performance?
The Fast20 Overclock is likely to provide similar speeds on BlueSCSI v2 50-pin. But on v2 it's definitely an "overclock", pushing things further and harder than they were originally designed to go from an electrical design perspective.

BlueSCSI Ultra is better electrically, with more closely matched SD communication trace lengths, termination resistors, and the transceivers. Ultra is designed from the ground up to talk to the SD card at up to 83MHz, where v2 wasn't built with that in mind.
 

Androda

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The EVT board for BlueSCSI Ultra Wide SCA arrived today (and this time the PCB was the right color!)

Already working with the standard Ultra Wide firmware, and now I get to implement SCA SCSI ID detection.

BlueSCSI_Ultra_Wide_SCA.jpg
 
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