[Icom] Infos for self designing of an UX14

[Wilfried Philippi]

ello,
does anybody have information about the internal bus of the IC271, IC471 or 
IC1271? I wan't to design a own Replacement Unit of the UX 14. The Side to 
the CI-V bus is already designed and works ( Output goes to a LCD Display).
But i don't have Information how i connect to the Tansceiver and what must i 
send to it e.g. what is when i will read from the Trx? Does anybody knows 
where i can get this Infos or are they in the Service Manual?

Thanks for Information
73 de DB8FE Wilfried
db8fe@darc.de