[Info-vax] Assistance needed!! working RM05 drive and VAX needed for proje

[Dave McGuire]

On 9/28/23 17:38, Johnny Billquist wrote:
> I've never actually tried running en RM05 on an RH11. I've not tried an 
> RP07 either. But I suspect you might be dropping data on the DMA 
> transfer, so potentually a non-solvable overrun problem.

   Ok.  But since there aren't any RM05s around anyway, at least none 
that anyone is aware of, it's a non-issue.  One of our PDP-11/55s has an 
RH11 in it so I mentioned it.

>> But my admittedly decades old memory does recall that a CDC 9766 on an 
>> Emulex controller (possibly an SC03) is media compatible with an RM05.
> 
> That would be interesting to get confirmed.

   A brief look at the Emulex SC03 manual confirms it.

>>    It's definitely the case that an Emulex controller (specifically) 
>> for the VAX-11/750, whose model number I've forgotten, connected to a 
>> CDC 9762 is media-compatible with the RM02.  I ran such a 
>> configuration at work in the early 1990s and regularly moved packs 
>> between the two.
> 
> That's interesting, and good to know. The RM02 and RM03 are the same 
> drive, and packs can be moved freely between them. The RM02 just spins 
> slower.

   Yes.

             -Dave

-- 
Dave McGuire, President/Curator
Large Scale Systems Museum
New Kensington, PA