Hi BobK,

PortA bits 0-3 are for a binary switch; they set the play address for the isd4002.

charudatt,
I have worked out all the problems myself, now it stores the address to eeprom and can be selected via the binary switch using a lookup table. Is this what you are after? Contact me via email in my personal info and I will send you the completed code.

Regards
Nick