[Simh] Devices and device names in simh?

[Edward Berry]

Thanks, that works great in a simple command line test:
$ Define/System/Exec dia0 dua0:
$ dir dia0:[000000]
Directory DUA0:[000000]
 . . .
If I have time tonight I'll put it at the very beginning of the startup 
file and see how many errors disappear.

Ed

Hittner, David T. wrote:
> No, you can't rename the device at the SIMH level. I've had this problem
> before, with both real and SIMH VAXes.
>
> Use a system logical in VMS system startup to define a synonym for a
> similar device: Example:
>  $Define/System/Exec dia0 dua0:
>
> You need to be careful about using the colon; sometimes it works and
> sometimes not - after a  little experimentation you will get it right.
> Depending on VMS version and use, the synonym may also require a
> preceding underscore.
>
> If you can't figure out the syntax, email me, and I'll dig a real DIA0
> synonym out of my VMS system archives.
>
> Dave
>  
>
> -----Original Message-----
> From: simh-bounces at trailing-edge.com
> [mailto:simh-bounces at trailing-edge.com] On Behalf Of Edward Berry
> Sent: Wednesday, July 11, 2007 5:09 PM
> To: simh at trailing-edge.com
> Subject: [Simh] Devices and device names in simh?
>
> Dear all,
> I am restoring a historic (well, to me at lest) vax configuration from
> stand-alone-backup tape to the simulator.
> It seems to be working, but how much flexibility do I have in device
> names?
>
> In the original configuration, the system disk was DIA0.
> After googling I understand the naming convention a little, and
> apparently DIxx is a disk mounted in a DSSI cabinet, not on the local
> scsi bus.
>
> I read the tape on a linux machine, enblocked it and mounted as MUA0,
> and restored the system disk with backup/image. No errors.
>
> Then I attach the restored system disk as DUA0: and boot it.
> Amazingly it actually came up and let me log in with system password.
> But there were lots of error messages.
> Most serious had to do with device names: DIA0-1 and the ethernet
> adapter which in the orig machine was (#VMS_Device se0) EZA0 on simh it
> is XQA0:
>
> For the sake of an authentic restoration, and to save me from editing
> all the config files, is there any way to have a disk image mounted as
> DIAx, and to have the enet adapter be EZAO?
>
> Thanks for any suggestions,
> Ed
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