[rescue] Sun 3/160 and CADDStation 32 deskside

[Mike Spooner]

There are base-address DIP switches and also configuration jumpers on the 3/1xx memory boards, that you should check.

Also, there is a P2-enable/disable jumper on the 3/160 CPU board.

Both the above are briefly covered in James Birdsall's Sun Hardware FAQ at https://www.unix-ag.uni-siegen.de/faqs/SUN-HW-FAQ.html

Regards,
Mike

On 14 August 2025 09:06:39 BST, Romain Dolbeau via rescue <rescue at sunhelp.org> wrote:
>Le mer. 13 août 2025 à 20:34, Alan Perry <alanp at snowmoose.com> a écrit :
>> I have since found that I have a 3/160 memory board to add to the 4M on the 3/160 board I am using in the CADDStation. However it is broken and I am trying to debug it.
>
>Good luck!
>
>You probably already found that info, but just in case...
>The SUN 3/160 itself has some documentation on bitsavers:
>* schematics: <https://bitsavers.org/pdf/sun/sun3/3-100/Sun-3_160_Schematic_Jun88.pdf>
>* functionam overview:
><https://bitsavers.org/pdf/sun/sun3/3-100/Sun-3_160_Functional_Overview.pdf>
>The second one calls the CPU board 2060, which also has some documents:
>* Hardware reference manual:
><https://bitsavers.org/pdf/sun/sun3/3-100/800-1370-02_2060_CPU_Hardware_Reference_Manual.pdf>
>* Engineering manual:
><https://bitsavers.org/pdf/sun/sun3/3-100/800-1386-13_2060_CPU_Engineering_Manual.pdf>
>There's also documents on how to place/configure the board in various
>VME systems.
>
>Unfortunately bitsavers doesn't appear to have documents pertaining to
>the memory boards themselves.
>
>But the CPU board documents clarify that the CPU accesses the memory
>board via the P2 bus, an extension to VME that Sun wired on the
>user-defined pins of the VME"s P2 connector and their own P3
>additional connector.
>So for the memory board and CPU board to communicate, they need to be
>placed in appropriate slots of an appropriate VME backplane. And other
>boards need to be placed in a way that match the requirements not just
>of the VME bus, but also the P2 bus, to enable use of the P2 and/or
>avoid conflicts.
>
>Cordially,
>
>-- 
>Romain Dolbeau
>
>_______________________________________________
>rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
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