Spider 916 alarm receiver with 93c06 chip
I have alarm receiver (infrared version made by TRW Sipea) with 93c06 eeprom memory and it's very problematic for me - I can't find keys codes in memory dump (4 keys??), I don't sure if it's locked etc.
I know programming procedures, 93c46 (from newest versions) is very easy and I can decode it, but dump from 93c06 is not understandable and clear for me.
Very strange it's that from 00h to 0Fh adresses I have found only FF. If I put to my receiver code with the same 4 digits e.g. 6666 then lights is going off - not stay-on (when code is incorrect) and not flashing.
Mybe some hints? I would be very grateful if someone could try to help explain me that.