G1-233P-85-1.8
| Model | G1-233P-85-1.8 |
| Description | Processor Series Low Power Integrated x86 Solution |
| PDF file | Total 247 pages (File size: 4M) |
| Chip Manufacturer | NSC |
Geode™ GX1 Processor Series
Instruction Set
(Continued)
8.2.2.3
CPUID Instruction with EAX = 80000002h,
80000003h, 80000004h
Extended functions 8000 0002h through 80000004h (EAX
= 80000002h, EAX = 80000003h, EAX = 80000004h) of
the CPUID instruction returns an ASCII string containing
the name of the current processor. These functions elimi-
nate the need to look up the processor name in a lookup
table. Software can simply call these functions to obtain the
name of the processor. The string may be 48 ASCII char-
acters long, and is returned in little endian format. If the
name is shorter than 48 characters long, the remaining
bytes will be filled with ASCII NUL characters (00h).
CPUID Instruction with
EAX = 8000 0005h
Extended function 8000 0005h (EAX = 80000005h) of the
CPUID instruction returns information about the TLB and
L1 cache to be looked up in a lookup table. Refer to Table
8.2.2.4
Table 8-25. Standard CPUID with
EAX = 80000005h
Register
EAX
Returned
Contents
--
xx xx 70 xxh
xx xx xx 01h
Reserved
TLB is 32 entry, 4-way set asso-
ciative, and has 4 KB Pages.
The CPUID instruction needs to
be executed only once with an
input value of 02h to retrieve
complete information about the
cache and TLB.
L1 cache is 16 KB, 4-way set
associated, and has 16 bytes
per line.
Reserved
Description
Table 8-24. Official CPU Name
80000002h
EAX
EBX
ECX
EDX
CPU
Name 1
CPU
Name 2
CPU
Name 3
CPU
Name 4
80000003h
EAX
EBX
ECX
EDX
CPU
Name 5
CPU
Name 6
CPU
Name 7
CPU
Name 8
80000004h
EAX
EBX
ECX
EDX
CPU
Name 9
CPU
Name 10
CPU
Name 11
CPU
Name 12
EBX
EBX
ECX
xx xx xx 80h
EDX
--
Revision 1.0
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