AMD 3200 Revision History - Page 65

AMD 3200 - Athlon 64 2.0 GHz Processor Manual

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48063 Rev. 3.18 October 2012 Revision Guide for AMD Family 15h Models 00h-0Fh Processors 691 Processors Using 1 MB L3 Subcaches May Execute a WriteBack Invalidate Operation Incorrectly Description The processor may fail to flush the full address range of L3 cache when executing a WBINVD instruction, or INVD instruction with Hardware Configuration Register[INVDWBINVD] = 1b (MSRC001_0015[4]). This occurs when the L3 cache is less than 8 MB per northbridge and is configured using at least one 1 MB L3 subcache, as indicated by the L3SubcacheSize fields (L3 Cache Parameter Register[L3SubcacheSize[3:0]], D18F3x1C4[[15:12],[11:8],[7:4],[3:0]] = Dh or Eh). Potential Effect on System Unpredictable system behavior. This has only been observed by AMD as a system hang while using cache as general storage during boot. Suggested Workaround Contact your AMD representative for information on a BIOS update. Fix Planned No fix planned Product Errata 65

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691
Processors
Using
1
MB
L
3
Subcaches
May
Execute
a
Write-
Back
Invalidate
Operation
Incorrectly
Description
The
processor
may
fail
to
flush
the
full
address
range
of
L
3
cache
when
executing
a
WBINVD
instruction
,
or
INVD
instruction
with
Hardware
Configuration
Register
[
INVDWBINVD
] = 1
b
(
MSRC
001_0015[4] .
This
occurs
when
the
L
3
cache
is
less
than
8
MB
per
northbridge
and
is
configured
using
at
least
one
1
MB
L
3
subcache
,
as
indicated
by
the
L
3
SubcacheSize
fields
(
L
3
Cache
Parameter
Register
[
L
3
SubcacheSize
[3:0]],
D
18
F
3
x
1
C
4[[15:12],[11:8],[7:4],[3:0]] =
Dh
or
Eh
.
Potential
Effect
on
System
Unpredictable
system
behavior
.
This
has
only
been
observed
by
AMD
as
a
system
hang
while
using
cache
as
general
storage
during
boot
.
Suggested
Workaround
Contact
your
AMD
representative
for
information
on
a
BIOS
update
.
Fix
Planned
No
fix
planned
48063
Rev
. 3.18
October
2012
Revision
Guide
for
AMD
Family
15
h
Models
00
h-
0
Fh
Processors
Product
Errata
65