[Simh] SIMH VAX Emulation under Linux: DU/RD units etc

[Hittner, David T.]

There are 4 DU units per controller in SIMH.
 
RQ(A) is the first controller.
RQB   is the second controller.
RQC   is the third controller.
RQD   is the fourth controller.
 
Enable the secondary controller(s), then you can get to their units.


________________________________

	From: simh-bounces at trailing-edge.com
[mailto:simh-bounces at trailing-edge.com] On Behalf Of John
	Sent: Thursday, June 08, 2006 8:17 AM
	To: simh at trailing-edge.com
	Subject: [Simh] SIMH VAX Emulation under Linux: DU/RD units etc
	
	
	'lo all...
	
	I've been fiddling with the standard VAX emulation under Linux
and it's all working Ok... but I can't find the answer to this question
in the FAQ nor in the docs.
	
	I understand that to get data in/out of the VAX/VMS environment,
I need to create an ISO9660 .iso file which I can then mount as a CD-ROM
-type device inside the VAX emulation.
	
	However, it seems there is a limitation of only 4 DU-style
devices.  For example, when I set-up a 'standard' installation as
described in Phil Wherry's Running VAX/VMS Under Linux Using SIMH guide,
he uses a vax.ini file that sets-up 3x virtual RA92 disks and 1x virtual
RDD40 CD-ROM.  If I modify the vax.ini file or manually enter commands
in the simulator to manipulate another RDD40 device (so that I can get
files into the emulation), I get into strife, viz:
	
	        simh> show rq4
	        Unit disabled
	        simh> set rq4 enable
	        Command not allowed
	        simh> show device
	        ...
	        RQ, address=(...), no vector, 4 units
	        ...
	
	Now, seeing the vax.ini file talks about rq0 through rq3, this
'adds-up' that we only have 4 units available... but how do I get to
another unit?  Is there a compile-time option?  Something that needs to
be included in the vax.ini file?  Is the vax.ini file only used the
first time the emulator is started, hence I need to re-start the
emulator with new virtual disks, etc.?
	
	Also, a trivial sort of question...  Under Linux, both xterm and
aterm -types of virtual terminals don't send the correct key for
"backspace" (they send CTRL-H instead of DEL).  I assume there's
someting in an .xtermrc file or similar that will fix that up? -- I'm
none too flash when it comes to Linux :)
	
	Thanks for any forthcoming info.
	
	
	John
	
	

	--
	John Gibney       /\/\ . o O ( Tai Chi, Music, Boomerangs, Mind
Maps...)
	South Blackburn  (o.o )      ( Civil Eng, Computing, Tutoring...
)
	AUSTRALIA         >^ <         e-mail: ozcat AT bigpond DOT net
DOT au
	

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