[Simh] "Raw" disk access

[Paul Koning]

As I recall, on VMS a disk is a file; a file spec consisting only of a device name accesses that device.  So unlike some other operating systems where special syscalls are needed for raw disk access, on VMS I would expect it to be just a matter of accessing DUA1: or whatever.

I haven't done this in ages, but this is what I recall from when the question came up in the context of my FLX program (RSTS file I/O).

	paul

> On Apr 11, 2017, at 9:52 PM, Alan Frisbie <Frisbie at Flying-Disk.com> wrote:
> 
> I see in the SIMH v4.0 User's Guide that Windows and Linux hosts
> can use raw (real, physical) disk drives.   Is there any chance
> that that capability will show up for VMS hosts anytime soon?
> 
> It would make it a lot easier to move entire disk file structures
> back and forth between my emulated (PDP-11) system and the host
> (Alpha) system.
> 
> Thanks,
> Alan Frisbie
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