CDU-710/M disk controller: Difference between revisions
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* [https://github.com/abs0/4.3BSD-Quasijarus 4.3BSD-Quasijarus with fixes on github] | * [https://github.com/abs0/4.3BSD-Quasijarus 4.3BSD-Quasijarus with fixes on github] | ||
* [http://www.classiccmp.org/pipermail/cctalk/2017-January/030798.html 4.3BSD boot bug] | * [http://www.classiccmp.org/pipermail/cctalk/2017-January/030798.html 4.3BSD boot bug] | ||
[[Category: UNIBUS Storage Controllers]] | |||
[[Category: SCSI]] | |||
Latest revision as of 22:05, 12 January 2024
The CDU-710/M is a UNIBUS SCSI disk controller made by CMD Technology Inc.. It fits in a quad Small Peripheral Controller slot. It support's DEC's Mass Storage Control Protocol.
4.3BSD Quasijarus bootstrap bug
When booting 4.3 BSD Quasijarus, there is a bug (although VMS, NetBSD revisions above 1.6 or so, and Ultrix-32 all boot fine); it hangs inside udcmd() in sys/vaxstand/uda.c.
The fix is to change line 155 from:
if(u->uda_ca.ca_rspint == 0)
to:
if(u->uda_ca.ca_rspdc & MSCP_OWN)
Re-build the bootstrap, and then run disklabel to update the copy on the disk.
