FPRINT
         PLA
         STA   RETADR
         PLA
         STA   RETADR+1
         LDY   #$01       
:LP
         LDA   (RETADR),Y
         BEQ   :DONE
         JSR   FCOUT
         INY
         BNE   :LP
:DONE
         CLC   
         TYA
         ADC   RETADR
         STA   RETADR
         LDA   RETADR+1
         ADC   #$00
         PHA
         LDA   RETADR
         PHA
         RTS