configuration of a digitizer Calcomp 34480 (A0 format) with Pentium 200 mmx, SUSE LINUX 5.3, GRASS4.21

Hello!
I am looking for the configuration with GRASS of a Calcomp digitizer A0
format, cursor 16, mod drawingboard 34480, connected with COM1. I use SUSE
LINUX 5.3 on a Pentium 200 MMX, 64 Mb RAM, mother board Asus TX97.
I need to know the switchs configuration for at least one of the possible
configurations that GRASS offers to the users.
I have just tried to call help to GRASS users community, but the only answer
was not good for my system. It was for Calcomp model 34280 and when I tried
to use it, V.digit said always: "Digitizer error"
The manual of my digitizer is no very good, there aren't very few informations.
Can somebody help me?
Thank you
        Dr. Clemente Folchi Vici d'Arcevia