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Re: SDI Disks



Technically RF drives are DSSI and RA drives are SDI.

On Sun, May 3, 2026 at 11:32 AM Johnny Billquist <bqt%softjar.se@localhost> wrote:
On 2026-05-03 16:44, Andrew Ball wrote:
> I'm trying NetBSD/vax 11.0 RC3 on an emulated MicroVAX 3800.  It seems
> to work but I notice that ra0 and ra1 are reported as the wrong type
> of drive (RF31 instead of RF35). Thanks to mscp the sector counts look
> good and NetBSD boots and seems to run without issue.
>
> -Andrew
>
>
>  From dmesg:-
>
> ra0 at mscpbus0 drive 0: RF31
> ra1 at mscpbus0 drive 1: RF31
> ra2 at mscpbus0 drive 2: RF31
> ra0: size 1664628 sectors
> ra1: size 1664628 sectors
> ra2: size 744400 sectors

The names are basically just strings returned from the simulator. They
have no relevance beyond being just a string that you can print out.

Size/capacity similarly is reported as what the actual capacity is,
without any regards to names.

So this is all just cosmetic, and it's a thing that you need to fix in
the simulator if you want it to say something else.

And really, any disk could just report whatever name. It's just a string
that consists of 1-3 letters and a number between 0 and 127.

   Johnny

--
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt%softjar.se@localhost             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol



--
Michael Thompson


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