<s>
CMD640	B-Error_Name
,	O
the	O
California	O
Micro	O
Devices	O
Technology	O
Inc	O
product	O
0640	O
,	O
is	O
an	O
IDE	B-Protocol
interface	O
chip	O
for	O
the	O
PCI	B-Protocol
and	O
VLB	O
buses	O
.	O
</s>
<s>
CMD640	B-Error_Name
had	O
some	O
sort	O
of	O
hardware	O
acceleration	O
:	O
WDMA	O
and	O
Read-Ahead	O
(	O
prefetch	O
)	O
support	O
.	O
</s>
<s>
The	O
original	O
CMD640	B-Error_Name
has	O
data	O
corruption	O
bugs	O
,	O
some	O
of	O
which	O
remained	O
in	O
CMD646	O
.	O
</s>
