Re: CD drives on vax

[Dave McGuire <mcguire%neurotica.com@localhost>]

On 06/21/2012 05:07 PM, David Brownlee wrote:
>>> ra0 at mscpbus1 drive 0: RRD40 <-- MSCP CD drive
>>> ra1 at mscpbus1 drive 1: RA82   <-- RA82 MSCP disk
>> I have a MSCP emulating SCSI host adapter that identifies CD drives as
>> "RA80"...
> 
> Thats... a little unhelpful. Does it not tag them in any way to allow
> the driver to distinguish them from 'real' disks?
> 
>> I asume you got that ra0 => RRD40 from simh?
> 
> And from real vax dmesg output :)
> http://mail-index.netbsd.org/port-vax/2008/02/23/msg000078.html
> 
>> Fixing this case is good, as there are many people playing with simh.
>> So anything that eases the install burden for these people is a +.
> 
> Thats my current target...
> 
> After a moments thought it does occur that rrd is a particularly poor
> choice of device name if we already have the raw devices for 'rd'
> around :/
> 
> So, currently looking at Martin's racd as the best name unless there
> are any other suggestions?

  Chiming in late here...IF there's any way to distinguish, it'd be
great to have it as consistent with other ports as possible.  Viewing
the OS and its drivers as the "abstraction layer" that sits atop the
hardware is how I'm envisioning it.  Is there no way to accomplish this
without violating the OTHER abstraction layer that is MSCP?

               -Dave
    (really glad to see this much activity on port-vax!)

-- 
Dave McGuire, AK4HZ
New Kensington, PA