[Simh] What OS was this {HP2100}

[Gregg Levine]

On Sat, Nov 5, 2011 at 1:54 PM, J. David Bryan <jdbryan at acm.org> wrote:
> On Friday, November 4, 2011 at 21:49, Ron Hudson wrote:
>
>> I also remember if one entered the command "why" on the terminal the OS
>> would reply with "Why not?"
>>
>> What OS was I probably running?
>
> You were definitely running DOS-III (the only HP OS that had a WHY
> command).  Have a look through:
>
>  http://www.bitsavers.org/pdf/hp/1000/DOS-III/24307-90006_Feb-1975.pdf
>
> ...particularly Section II, "DOS-III Directives," and see if it looks
> familiar.  (The WHY directive was undocumented. :-)
>
>
>> Can I run that same OS under SIMH?
>
> Yes:
>
>  HP 2100 simulator V3.8-1
>
>  HALT instruction 102077, P: 02020 (CLC 0,C)
>
>  sim> go
>  INPUT :DATE,XXXXXXXXXX,H,M
>
>  @:DATE,05-NOV-11,13,46
>  SUBCHAN=01
>  LBL=SYSTEM
>  DISC GEN CODE 1503 NOT SYS GEN CODE 2575 ERR POSS
>  @
>  :JOB,DAVE
>  JOB DAVE  05-NOV-11  TIME=0826 MIN. 15.2 SECS.
>  @
>  :WHY
>  WHY NOT?
>  @
>  :EJOB
>  END JOB DAVE  RUN=0000 MIN. 44.0 SEC.  EXEC=0000 MIN. 00.0 SEC.
>  @
>
>
>> If so where can I get it?
>
> I'll work on getting a DOS-III disc image to Bitsavers for posting.
>
>                                      -- Dave

Hello!
Sounds like a good idea.

Now how old is this particular system?

-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."