Hi Rudolf, > I will add some more information to the archive. It seems it is ICH4 > compatible because it reserves for ACPI the 16 bytes. So HW PEC should be > supported too. > > Pavel could you please dump with isadump: Here is requested isadump: ----------------------------------- [root at home ~]# isadump -f 0x400 16 WARNING! Running this program can cause system crashes, data loss and worse! I will probe address range 0x400 to 0x40f. Continue? [Y/n] 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: 00 00 00 37 ae 3c 00 00 00 00 00 00 00 00 a0 00 ----------------------------------- > Regards > Rudolf Best regards, Pavel Ruzicka