Oh heck it is https://www.crystel.com/pdp/sc03

I'll build a relative link so the other one works

On October 5, 2025 10:27:55 AM EDT, Christopher Zach via cctalk 
<[email protected]> wrote:
>Hi all!
>
>I noticed that while the Emulex SC03-B1 manual is on Bitsavers, the 
>instructions for how to patch and use this board on a 22 bit Q Bus system are 
>not. In the manual it says to "Write emulex".
>
>Fortunately I did 40 years ago and I have the "Emulex Disk Capacity Patches to 
>DEC PDP-11 Operating Systems" manual which is now scanned and online at 
>https://www.crystel.com/dec/sc03
>
>Emulex document ID is PD9951002 Rev A, March 1983. Covers Rsx11M 3.2, 4.0, 
>RSTS/E, and M+ versions at that time.
>
>Every page is scanned as a 300 DPI TIFF image, and there is a PDF version of 
>the whole manual as well.
>
>Apparently they use the RH70 Unibus driver (which supports 22 bit without the 
>unibus map) and then change a few bits to make it work on Q Bus.
>
>Enjoy and bitsavers owner please stick this in your archives as well.
>
>Chris
>

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