Before revision: ChipProtocolSiI/CMD 640MDMA 1SiI/CMD 643MDMA 2SiI/CMD 646UDMA 2SiI/CMD 648UDMA 4SiI/CMD 649UDMA 5SiI0680UDMA 6 Hardware bug The original CMD640 has a data corruption bug.- linux/drivers/ide/pci/cmd640.c Version 1.02 Sep 01, 1996 The data corruption bug is similar to the bug affecting the contemporaneous PC Tech RZ1000 chipset.
After revision: (a subsidiaryRZ1000 FAQ of Zeos)ChipProtocolSiI/CMD 640MDMA 1SiI/CMD 643MDMA 2SiI/CMD 646UDMA 2SiI/CMD 648UDMA 4SiI/CMD 649UDMA 5SiI0680UDMA 6 Hardware bug The original CMD640 has a data corruption bug.- linux/drivers/ide/pci/cmd640.c Version 1.02 Sep 01, 1996 The data corruption bug is similar to the bug affecting the contemporaneous PC Tech RZ1000 chipset.