FORTRAN Adventure (was Re: RL02 problem)

Rick Bensene rickb at
Sat Apr 22 15:09:46 CDT 2006

My first experience with Adventure was on the CDC Cyber 73 at Tektronix
1977-'78.  Wouldn't run on the (coolest ever) console, but only on
remote terminals, typically old Tek 4010's DVST terminals (and some
4002A's, which were probably one of the coolest terminals made, IMHO)
which were connected through a MODCOMP II front-end machine for serving
lots of terminals via a massive panel of RS-232 connections.  Operating
system was KRONOS.

I'm wondering if the port that we had came from you? I think, somewhere,
I have a source listing of it on greenline 132 column paper, but it
might take a while to find it.  Other than the cool graphics games that
could be played on the console (chess, spacewars, and a few others that
I can't remember off hand). Adventure was the best there was -- and it
probably contributed to the biggest waste of "expensive" computer time
in its day (back in the days when time on the machine was accounted for,
and charged-back to each cost-center who used it).

Rick Bensene
The Old Calculator Web Museum

> -----Original Message-----
> From: cctalk-bounces at 
> [mailto:cctalk-bounces at] On Behalf Of Chuck Guzis
> Sent: Saturday, April 22, 2006 11:25 AM
> To: cctalk at
> Subject: Re: FORTRAN Adventure (was Re: RL02 problem)
> On 4/23/2006 at 12:03 AM Ethan Dicks wrote:
> >It's rather trivial to take the RSX/RSTS Adventure sources 
> and get them 
> >working under VAX FORTRAN - a 32-bit environment and wads of virtual 
> >space removes many of the restrictions imposed by a 16-bit virtual 
> >space on an -11 OS.  On a PDP-11, I think all ADVENT implementations 
> >use overlays - not required on a VAX.
> Geez, where did you guys get a VAX FORTRAN version?  Back 
> around 1974(?
> IIRC), a friend who was a field engineer with DEC gave me a 
> (7 track) tape from a DECsystem 10 with the FORTRAN source.  
> It took me about a week of bootlegging effort to get the tape 
> read and ported over to a CDC Cyber 174.
> Judging from the huge collective waste of company time and 
> resources spent on the game, it was a wonder I didn't get fired.
> Cheers,
> Chuck

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