ARM Assembly how to print numbers instead of their ascii rep

[moonman]

I am new to arm assembly, i'm trying to print integer to screen instead of their ASCII representation of that number. Below is the code which i'm trying with instead of printing 99 i'm getting 'c'.

$this->bbcode_second_pass_quote('', '.')global _start
.text
_start:

@ write to num variable
_write:
mov r8, #99
ldr r9, =num
str r8, [r9]

@read from num variable and print to screen
_read:
mov r7, #4 @ syscall
mov r0, #1 @ std output
ldr r1, =num @ starting address
mov r2, #2 @ number of character to print
swi 0 @ interrupt

_end:
mov r7, #1
swi 0

.data
num: .word 0

[summers]

Well its years since I did assembly. But what I'd do is split each 8bit byte into two 4bit values, which you can do with the shift operators.

Then for the 4bit value print a character from the lookup table '0123456789abcdef'.

My machine code is old 6502 stuff, (well and also sharp PC1403) - and that was all doable, with careful register use. I'd expect on an arm it shouldn't be any harder ...