[Simh] VAX and disk device size oddness

[Johnny Billquist]

Hi.

On 2013-02-15 14:32, Lennert Van Alboom wrote:
> Hello,
>
>
> I just started playing with a simh vax again. Built the 3.9 vax binary (on
> linux/powerpc), and it works fine.
>
> Odd thing though: I cannot use RAUSER, it seems. I tried the following line:
>
> SET RQ1 RAUSER=20000
>
> Which should result in a 20GB disk. No dice though: simh claims "invalid
> parameter". I tried lowering the size to 10000, 5000, ... no difference.
>
> I then tried replacing the RAUSER by RA92, which should be supported and have a
> ~8GB size. This was accepted. However, from the OS (VMS 7.3), after an
> INIT/ERASE the disk reports 2940951 blocks which is somewhat under 1.5GB. The
> RQ0 RA90 reports the expected 2376153 blocks or somewhat under 1.2GB.

Don't know where you got that an RA92 would be 8G. It is really just 
1.4G. The largest RA drives ever manufactured were the RA73 at 2G.

> Now, the host OS is on a PPC G4, which means a 32bit kernel. Is this what is
> causing this? If yes, can I work around it? I'd prefer something bigger than
> 1.5GB :-)

RAUSER is what you need. I don't think simh even knows of the RA73...

	Johnny

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