Serial Output - for an ASM numb

Full asm code here.

From the asm source code, there are calculations on the watt and ampere hour.
But for my project, i intended to get only the ampere hour reading out. So I tried my best to study the asm code though i am numb in asm.

Calculating the ampere hour

Code:

---

calc_Ah:
    add1632    Amps,AmpSum    ; AmpSum = accumulated Amps
    mov32    AmpSum,dd
    movi16    3600*3,aa    ; 3 reads per second, 3600 seconds per hour
    call    Div32        ; AmpHours = AmpSum  / (reads per hour)
store_Ah:
    mov16    dd+2,AmpHours

---

And here is the part to display the reading at a 16x2 line LCD

Code:

---

.....
call    Show_AmpHours    ; "9999.9W 99.99Ah"
.....

---

But the code is intended to display it on the LCD. How to modify it so that i can directly get a single stream for only the ampere hour data out from a PIC?

I am trying to get the serial uart output from it. Can anyone guide me? (I din use any RS232, the RF module needs serial comm. via CMOS logic)
I am just leaving this particular part, can someone kind enough guide me?