mifare reqa command
This link and sources are useless. Source lacks the most imporant part of application: use of library. Documentation for mcf500 is really bad (close to none). I wonder how this guy managed to get circuit cellar award for incomplete project. Documentation for the project itself is not so great. It doesn't explain mifare at all!
Anyway, this board has several uploaded documents about mifare. All can be downloaded from nxp site so save your DL and BW. But none of those documents show the bare protocol information. The only useful document I found is Ultralight product specification:
**broken link removed**
Some part of this document can be used for other Mifare Classic cards. This document has (partial) command set description including timing information. Now the question is why there is no such document for Mifare 1K or Mifare 4K.