[PiDP-11] Some new text adventure stuff for 2.11BSD

Johnny Billquist bqt at softjar.se
Sat Jan 4 03:59:44 CST 2020

Interesting. Trinity works fine under ZEMU.

So ZIP must be rather a hog...

V8 games that I've played under ZEMU:


On 2020-01-04 06:12, Adam Thornton wrote:
> I'm having a party on Saturday January 11 (and if any of you are in 
> Tucson, or want to come to Tucson for it, you're invited; email me for 
> the address and time).
> Although the party is Elvis-themed, it's really about boardgaming and 
> classic videogaming.
> So I kind of wanted to put a general-purpose Z-machine interpreter on my 
> PiDP-11, so that people could play Infocom (and community) games on a 
> real terminal.
> Turns out there wasn't really one, so I ported the venerable ZIP (which 
> I have renamed "zterp" for obvious reasons) to 2.11BSD on the PDP-11, 
> and I also wrote a little utility I call "tmenu" to take a directory 
> (and an optional command applying to files in the directory) and make a 
> numbered menu, so that my guests who are not familiar with Actual Bourne 
> Shell can play games too.
> These things are at:
> https://github.com/athornton/pdp11-zterp
> and
> https://github.com/athornton/pdp11-tmenu/
> Both are K&R C, and compile with the 2.11BSD system C compiler.
> My biggest disappointment is that the memory map of Trinity, my favorite 
> Infocom game, is weird and even though it's only a V5 game, I can't 
> allocate enough memory to start it.  Other than that, V5 and below seem 
> to work mostly fine; V8 is in theory supported but no game that I've 
> tried has little enough low memory that I can malloc() it using C on 
> 2.11BSD.
> Adam
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Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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