Intel Itanium 2 Processor Datasheet page 84

System Management Feature Specifications
Table 6-4. Processor Information ROM Format (Sheet 3 of 4)
Offset/
Section
Package
37h
3Bh
3Ch
3Dh
Part Numbers
3Eh
45h
4Dh
62h
Thermal Reference
63h
64h
65h
66h
Features
67h
6Bh
84
# of
Function
Bits
32 Package Revision
2 Substrate Revision
Software ID
8 Reserved
8 Checksum
56 Processor Part Number
64 Processor Electronic
Signature
168 Reserved
8 Checksum
8 Upper Temp Reference
Byte
8 Thermal Calibration Offset
Byte Present
8 Reserved
8 Checksum
32 IA-32 Processor Core
Feature Flags
64 Reserved
Notes
Four 8-bit ASCII characters
2-bit revision number
Reserved for future use
1 byte checksum
Seven 8-bit ASCII characters
64-bit identification number
Reserved for future use
1 byte checksum
Hex value of thermal upper temp
limit
Number of degrees in error (±)
Reserved for future use
1 byte checksum
From 32 bit CPUID
Reserved (Processor core
feature flags implemented in the
®
Itanium processor family)
Examples
®
Itanium 2 Package =
INT2b, (1.50 GHz 4MB
and above) = INT3b:
• 37h = I
• 38h = N
• 39h = T
• 3Ah = 2 or 3
00
00h
Add up by byte and
take 2's complement
Itanium 2 (900 MHz,
1.0 GHz) = 80542KC.
Itanium 2 processor
(1.30 GHz -1.66 GHz) =
80543KC:
• 3Eh = "8"
• 3Fh = "0"
• 40h = "5"
• 41h = "4"
• 42h = "2" or "3"
• 43h = "K"
• 44h = "C"
May have padded
zeros
x0h
Add up by byte and
take 2's complement
Default = 113 for 1.66
GHz through 1.5
GHz/4MB. Default =
105 for all others.
Default = 0
00h
Add up by byte and
take 2's complement.
4387FBFFh
0000 0000 6380 811Bh
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