hi;
your need to add this in your isr:
1.check if initiating char has already been recd.put a flag.
;push registers
|
clr ri
mov a,sbuf
jb flag1,process_data
cjne a,#011,exit
setb flag1
jmp exit
process_data:
;read data by tagging each field with
;flag or by decrmenting temp
;you may use buffering technique recommended
;in other posts
;after reception is over reset all flags

exit:
;pop registers
|
reti

pranav