Adventures online

Rich Alderson alderson at
Thu Jul 23 13:25:06 CDT 2020

> On Jul 23, 2020, at 10:47, Chuck Guzis via cctalk <cctalk at> wrote:
> On 7/23/20 10:25 AM, Lars Brinkhoff wrote:
>> Chuck Guzis wrote:
>>> Well, if one wanted to stay historically accurate, one would use a
>>> PDP-10.
>> It's not Crowther's Adventure, but the Infocom games.
> Infocom's games were based on Crowther, after all.   I remember porting
> the PDP-10 FORTRAN to CDC 6000 SCOPE 3.4. I got the source from a friend
> who was a DEC CE.   After converting the source tape, the "save game"
> was probably the biggest difference in implementation.  I used FTN
> (FORTRAN extended) to do the deed, rather than RUN.
> After the game had been distributed at CDC SVLOPS, there was a concerted
> effort by management to purge the thing from all of the permanent file
> catalogs.  Luckily, management never discovered who introduced the game
> in the first place...
> So yes, Adventure/Colossal Cave did run on an honest big mainframe.
> I never played the game much myself, as I had access to the source, so I
> knew the innards of the game.
> --Chuck

Loosely based, of course.

And Bob Supnik’s FORTRAN version was also ported to VM/CMS, so that’s two mainframes.

Rich Alderson
ex-Living Computers: Museum + Labs

Sent from my iPhone

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