[Simh] Quest from 1979 on RSTS/E V06C-03 in Simh (Brett Bump)

[Robert G. Schaffrath]

 > Or you could grab the pre-genned V6C kit from:
 >
 > 
http://www.rsts.org/autoindex.php?dir=distros/RSTS_kits/&file=RSTS_V6C_Kit.zip

I tried booting that, and it does boot, but the startup does not run. No 
system initialization is performed and I login as job 1 with no CCL's 
defined. The version at https://skn.noip.me/pdp11/rk2.dsk does boot and 
has all commands installed.

Looking at both environments there are two things I noticed as different 
from the V06C-03 I was using in high school back in 1978. On our system 
we had control-T available that was enabled and disabled along with 
control-R. What was interesting was that it would show the job priority 
for non-privileged users. Priority display was removed in 7.0 for 
non-privileged users. We hackers discovered that on a slow running 
system, one could repeatedly hit control-C during login and abort the 
change from logged out priority +0 to priority -8 by LOGIN (control-T 
let us see that we were still at +0). That gave our teacher and the 
county data center where we rented access to the PDP-11/70 system fits.  
Eventually they wrote a "guard" program that would drop the priority of 
any non-privileged job found to be greater -8. The problem with that 
check was that some jobs legitimately got bumped to -4 priority 
temporarily due to the set-special-run-priority syscall. The "guard" did 
not recognize that and pushed jobs back down to -8.

The other difference I noticed is that SYSTAT in privileged mode does 
not show the runburst. In privileged mode, SYSTAT had a "Pri/RB" column 
whereas this V06C-03 only has "Priority". That was documented in the 
RSTS/E manual I had bought from DEC.

I have to wonder if we were running a version of V06C-03 with those 
additional enhancements. It definitely was not 7.0. I graduated in June 
1980 and I was told they upgraded to 7.0 that summer.