2010/7/31 Zheng Bao <[email protected]>: > The board tht I am working on has 2 process. Each of them has 6 DIMM slots. > If you > plug 1 dimm into each slot, the SPD address will be, > Channel PCB > ---------------- > P0: > DIMMA0 50h > DIMMA1 51h > DIMMA2 52h > DIMMB0 53h > DIMMB1 54h > DIMMB2 55h > P1: > DIMMA0 50h > DIMMA1 51h > DIMMA2 52h > DIMMB0 53h > DIMMB1 54h > DIMMB2 55h > If you plug 1 dimm in P0DIMMA0 and the other in P1DIMA0, the SPD address > will be 50h and 55h. > So I am confused. If we got an active spd 0x50 on the SMBUS, what will it > be?
Are you sure the wiring is correct? Can you plug the DIMM into P1DIMMB2 and see what SPD address it has? This could be a simple case of an error in the wiring. What does the standard say about SPD addressing of DIMMs? It's more than a 3 bit address and it seems we must have more addresses in the definition. ron -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
