Thanks. If i understood well in r5 must be the segment and in r4 must be offeset. But for offset i tried to find like i said upstairs 5B EE or EE 5B , 5C 30 or 30 5C,.....etc. But nothing found.
initially I wanted to steer you towards the indirect calling of functions. I think by now you know that already.
It seems in the addresses you searched, there is some garbage/leftover code/not used, so not an indirectly called function there. Sorry for the confusion.
The garbage looks like flags or CWs, abandoned from earlier coding.