I checked the document for the A3640 and I do infact have a Rev 3.2 and not 3.1 as the board says. My PAL at U209 is a Rev -03 
The problem is:
My A4000T can't work with my A3640 (rev 3.1, U209 is -02) but working good with A3630. At the other side, my A3640 working good in my A4000D. I tried everything, and at one moment I put A4000D kickstart eproms in A4000T, and everything is fine with combination A4000T+A3640 (except SCSI of course). So I can't understand what could be problem. Maybe revision of A3640???
Thanks.
