[Simh] RT-11 .DSK usage (was DECUS C)

[Tim Shoppa]

Rich asks:
> So, do I understand correctly that I can attach one of these .dsk files to
> a drive in a SimH PDP11 instance, run RSX-11M or RSTS/E, and FLX will do the
> right thing with it?  Or is there other magic involved?

Examples below show mounting the DECUS 11-424 disk image 110424.dsk
under the MSCP driver unit 1 (aka rq1 in SIMH).

The easiest way to access a RT-11 logical disk is with RT-11. No
FLX to run because RT-11 makes everything easy. e.g. after booting RT-11

[ctrl-E]
sim> att rq1 110424.dsk
sim> c


.dir du1:
 01-Aug-90
TST101.FOR     7  05-Feb-80      TST100.FOR     7  05-Feb-80
TIME  .SAV    19  05-Feb-80      TIME  .FOR     3  05-Feb-80
VTDEMO.SAV    21  05-Feb-80      VTDEMO.FOR     7  05-Feb-80
VT    .OBJ     4  05-Feb-80      VT    .MAC    12  05-Feb-80
VT    .TXT    25  05-Feb-80      
 9 Files, 105 Blocks
 0 Free blocks

But under say RSX-11M+ you can also access using FLX, e.g. after booting
RSX-11M+:

[ctrl-E]
sim> att rq1 110424.dsk
sim> c   

>all du1:
>mou du1:/for
>run [3,54]flx
TT0>du1:/li/rt


Directory	 DU1:
23-AUG-10

TST101.FOR    7. 05-FEB-80 
TST100.FOR    7. 05-FEB-80 
TIME  .SAV   19. 05-FEB-80 
TIME  .FOR    3. 05-FEB-80 
VTDEMO.SAV   21. 05-FEB-80 
VTDEMO.FOR    7. 05-FEB-80 
VT    .OBJ    4. 05-FEB-80 
VT    .MAC   12. 05-FEB-80 
VT    .TXT   25. 05-FEB-80 
< Unused >    0. 

 0. Free blocks

 Total of 105. blocks in 9. files

TT0>tt:=du1:time.for/rt
	PROGRAM TIME
C	
C	This is a demonstration of some of the capabilities of the "VT"
C	routines. It generates a large date/time display at the top of
C	the VT100 screen. To stop the program and reset the VT100 type
c	letter S.
C	
[...]
TT0>

Tim.