Cn3_IDSet:
    di
    ld hl,Cn2_Caller_Routine
    ld de,$9999
    ld bc,Cn2_Caller_RoutineDone-Cn2_Caller_Routine
    ldir
#ifdef cn2_installerinflash
    in a,(6)
    ld ($9999+Cn2_caller_HomePage-Cn2_Caller_Routine+1),a               ;SMC if this code is on a Flash page
#endif cn2_installerinflash
    ld a,$9a
    ld i,a
    ld h,a
    ld l,0
    ld (hl),$99
    push hl
    pop de
    inc de
    ld bc,256
    ldir
    ld a,%00001001      ;Acknowledge and disable
    out (3),a
    ld a,%00001011      ;Set 1st timer active
    out (3),a
    ld a,%00000110      ;Slowest frequency, ~110hz
    out (4),a
    im 2
    ld a,sendCLDL
    out (0),a
    ei
    ret