What is this asm code doing??

Hi all

Can anyone tell what is this asm code doing?? what is the _?ix1000 doing??

MOV R3,#0FFH
MOV R2,#HIGH _?ix1000
MOV R1,#LOW _?ix1000
PUSH AR3
PUSH AR2
PUSH AR1
MOV R3,#00H
MOV R2,#HIGH count
MOV R1,#LOW count
MOV R0,AR1
MOV R4,AR2
MOV R5,AR3
POP AR1
POP AR2
POP AR3
MOV R6,#00H
MOV R7,#04H
LCALL ?C?COPY

Thanks a lot