Good morning Phil
I wish you success with remote controls. You know something? My problem is that no one of those universal remote controls - included Philips - can fulfil by 100% the demands of this project in which we have include e.g. the Balance function. Though there are RC-5 commands for Balance, this function is no handy or is absent on any universal handset. And we need a remotelly controlled Balance function, think about. For this reason 10 days ago i search to find a good "Blank" plastik box with small dimensions, in which i will include a programmed PIC to transmit in address "16" and thru 8 - 10 buttons will execute these functions: STBY, MUTE, CH+, CH-, VOL+, VOL-, BAL left, BAL right, maybe Loudness etc. All these functions should be remotelly managed.
BTW, from today i will start the proccess of your fcf, in the meantime i had some ideas i will try to implement in code. Also, from the past week i received two PIC16F1937 as samples from Microchip. These new mcu are pin to pin compatible with P16F887 but offer lot of new posibilities, like deeper stack level so will try these instead F887. Yesterday i had few money left over and by the chance i ordered from e-bay two rails of 10 common DPDT relays (OMRON G6A-234P-BS-5Volt, are very good for audio signals due to their "AgPd+Au clad" contacts, though their coils demand 16mA more than G6A-234P-ST-US that i used in the past). Total 20 pieces for 0.4 GBP/piece, very good price. Hey Phil, do you think that i am rich?