booting from RQDX3 - test-drb@ccmp.vtda.org

1 Jun 2001

On Jun 1, 13:02, John Allain wrote:
...
  Yup, this is
why third party disk controllers always include a
 'boot rom' option. 
 The sound I was looking for: ROM on card itself.
   Now: How common? 
For third-party controllers, extremely common.  For DEC controllers, rare;
in fact I can't think of a single one that does.

...
  Is this saying that DEC controllers will force moving
the ROM
 out to the bus term card as a seperate FRU?  And is it really
 always controller card resident for the 3rd partiers? 
Not necessarily or even usually on a bus terminator card.  On the 11/24,
11/23+ and later Qbus processors (11/73+, 11/83, //53, 11/93), the ROMs are
on the processor card.  For many Unibus machines, and the Qbus processors
that didn't weren't integrated with SLU, LTC, etc, it was often on a
separate ROM card or a multifunction (SLU/LTC/RAM/ROM: MXV11-A or MXV11-B)
card.  The BDV11 used in 11/03 ansd 11/23 systems was unusual in being a
combined terminator/clock/bootstrap card (like a TEV11 or REV11 with
extras).

-- 
Pete						Peter Turnbull
						Network Manager
						University of York