DTMF receiver

[mister_e]

You replace BANK0, BANK1 etc bank calls with CHK?RP, you deleted their BANK macro.

Al variable are define in the regular way
COUNT VAR BYTE *** carefull it's a reserver word
RESULT VAR BYTE

DE is replace with DATA

forget all ORG

and when you use those variable in asm, you insert an underscore before.

They use interrupt.. look at the end of the PBP manual or use Darrel interrupt in ASM, AND forget the context save/restore section.

list is still long enough... i would probably suggest you to compile their code, see if it works, if so, add your own stuff in.

I can't remember to have messed with DTMF decoding 'till now.

Did you found a MT8870 somewhere?