There are references in the data pool to a P2ROM chip (Production Programmed ROM - Oki Semiconductors) in some of the Cxx0 machines.
One Japanese site has photos of a torn down C700 that show this P2ROM VLIC close up. So it is real & not rumor.
Some of the info:
"Not a flash device"
"NAND & NOR where NOR is actually P2ROM"
"Non field upgradable"
The P2ROM supposedly holds the primary boot loader code & possibly some of the diags & recover programming. Yet the C700 apparently still has the 6-8Mb "boot" area above the initrd section.
Does anyone know if the C760/860 machines have a P2ROM chip on board and what active code, if any it contains?