RQDX3 as secondary MSCP controller

Charles Dickman chd at chdickman.com
Sun Sep 4 20:24:24 CDT 2016

Hi Mark,

On Sun, Aug 28, 2016 at 6:19 PM, Mark G Thomas <Mark at misty.com> wrote:

> The difficulty I am having is I would like to configure the system with
> both MSCP controller cards installed, so I can boot from either SCSI or
> floppy, preferably with the SCSI still starting at DU0 so my BSD2.11 CFs
> remain portable to my other system.

I have the same board configuration but with the quad wide KDJ11
processor and it works fine. So it may be something about the
processor and ROM instead of the RQDX3.

> Another oddness I noted was that with my original RQDX3 config, if I
> plug the M7516 ethernet card in, that breaks booting from floppy.

This shouldn't happen if the CSR addresses don't conflict.

Could it be something with the backplane?


More information about the cctalk mailing list