The python-on-a-chip page states:
"This project's goals are to develop the PyMite virtual machine, device drivers, high-level libraries and other tools to run a significant subset of the Python language on microcontrollers without an OS."
Having a perl on a USB drive isn't comparable with python-on-a-chip, or a conceptual perl on a chip solution.
Update: For example, Portable perl: usb thumbdrive requires the Microsoft Windows OS, overkill/outwith the capabilities of most microcontrollers. The OP didn't ask for a cut down or portable version of Perl.
Cheers
Martin
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