Attached is a functioning AES-128 implementation in PASM (with just enough SPIN to set the pointer to the SBox & InvSBox lookup tables).

1. I have tested it (successfully) against the FIPS-197 example using GEAR V09_10_26. (Note: this is the Data and Key in the file, output in istate.)
2. It is not a complete driver, it just encrypts & decrypts data loaded with the PASM and leaves that data in the COG. Adding data movement (along with the steps needed to support multi-block modes) is left to the implementor.

Performance: Key Expansion ~4.4K cycles, Cipher ~16.1K cycles/block, Inverse Cipher ~18K cycles/block.