Hrm...64KB almost sounds like the 64KB+64KB (Instruction + Data) L1 cache size...but I kind of doubt this would develop a problem...it is perhaps the most precise and expensive part of the chip...


I found this note about RIMM Modules...which reminds me why they never caught on...

Continuity RIMM Modules
All RIMM sockets must be populated to achieve continuity for termination at the Rambus interface. Continuity RIMMs (or "pass-through" modules) must be installed in the second RDRAM bank if memory is not installed. If any of the RIMM sockets are not populated, the computer will not complete the Power-On Self-Test (POST) and the BIOS beep codes will not be heard.
So I guess in short, you are hearing beep codes so the RAM is communicating correctly. I don't know if the 64KB is a RAM or a CPU issue though...any other compatible processors sitting around that you could test?