.. having recherched further.
There would be the MIPS I emulator, written in perl.
And, things like retrobsd, a port to MIPS 4;
Also other alien OS's.
http://retrobsd.org/wiki/doku.php
https://hackaday.com/2012/03/28/building-the-worst-linux-pc-ever/
NUTTX could possibly even run at the Z80 emulator, written in perl.
http://nuttx.org/doku.php?id=documentation:about
This would increase the wtf-factor immensely, however, seems to me,
the additional layer(s) give a clean separation, which don't add anything to obfuscation or security.
I might give nuttx a try, just out of curiosity.
But at the moment I believe I'm going to either compile the editor into MIPS asm,
and write a "translator" to get perl code again.
DSL might be another term for what I'm going to do, I didn't know the concept yet.
Or I'll translate the texteditor from c to perl by hand.
Overall, it's only about 600 loc, not counting comments.
;) btw., the link to the editor.
https://github.com/michael105/et