Infocom mystery binary

David Griffith dave at
Wed Apr 24 05:14:58 CDT 2019

My reply is at the bottom.  Please put your reply there too.
On Wed, 24 Apr 2019, Ethan Dicks wrote:
> On Tue, Apr 23, 2019 at 9:58 PM David Griffith via cctalk
> <cctalk at> wrote:
>> In one of the repositories of Infocom game source code recently uploaded
>> to Github, there's an executable that appears to have come from an m68k
>> Unix machine of some sort.  It's at
>> Over at
>>[1], it was initially claimed to be from a Macintosh.  Then
>> I suggested it was from a pre-Sparc Sun machine.  Then someone else
>> suggested it was from A/UX.  Does anyone know anything more conclusive?
> Doing file(1) on it, I get...
> $ file zap
> zap: mc68k COFF object not stripped (demand paged)
> I also happen to have another version (not from github)
> $ file sun/zap
> mc68020 demand paged dynamically linked executable not stripped
> _That_ one is a Sun3 binary.

I see.  Mystery solved!

Oooo... Where did that one come from?

When I first noticed that the binary wasn't stripped, I tried poking 
around with assorted disassemblers and decompilers hoping to get something 
resembling C code out of it.

David Griffith
dave at

A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

More information about the cctalk mailing list