The OpenBSD/cats port was discontinued after the 4.0 release.
OpenBSD/cats was started based on NetBSD -current code of January 2004. It was used as a reasonably fast foundation to the zaurus port.
Once the zaurus port was running well, cats was neglected due to the (relative) lack of hardware and the deceiving hardware reliability, and was dropped shortly after the inception of the armish port.
The Simtec StrongARM 110 Evaluation Board is the only supported board at the current time.
Currently only the following hardware has been tested:
USB support does not work correctly on all boards at the moment.
The last supported OpenBSD/cats release was OpenBSD 4.0.