Tao.Platform.Windows SDK Documentation |
|
Kernel.SYSTEM_INFO Members
Kernel.SYSTEM_INFO overview
Public Instance Fields
ActiveProcessorMask | Mask representing the set of processors configured into the system. Bit 0 is processor 0; bit 31 is processor 31. |
AllocationGranularity | Granularity with which virtual memory is allocated. For example, a VirtualAlloc request to allocate 1 byte will reserve an address space of AllocationGranularity bytes. This value was hard coded as 64K in the past, but other hardware architectures may require different values. |
MaximumApplicationAddress | Pointer to the highest memory address accessible to applications and DLLs. |
MinimumApplicationAddress | Pointer to the lowest memory address accessible to applications and dynamic-link libraries (DLLs). |
NumberOfProcessors | Number of processors in the system. |
PageSize | Page size and the granularity of page protection and commitment. This is the page size used by the VirtualAlloc function. |
ProcessorLevel |
System's architecture-dependent processor level. It should be used only for display purposes. To determine the feature set of a processor, use the IsProcessorFeaturePresent function.
If SystemInfoUnion.ProcessorArchitecture is PROCESSOR_ARCHITECTURE_INTEL, ProcessorLevel is defined by the CPU vendor.
If SystemInfoUnion.ProcessorArchitecture is PROCESSOR_ARCHITECTURE_IA64, ProcessorLevel is set to 1.
If SystemInfoUnion.ProcessorArchitecture is PROCESSOR_ARCHITECTURE_MIPS, ProcessorLevel is of the form 00xx, where xx is an 8-bit implementation number (bits 8-15 of the PRId register). The member can be the following value:
Value |
Description |
0004 |
MIPS R4000 |
If SystemInfoUnion.ProcessorArchitecture is PROCESSOR_ARCHITECTURE_ALPHA, ProcessorLevel is of the form xxxx, where xxxx is a 16-bit processor version number (the low-order 16 bits of a version number from the firmware). The member can be one of the following values:
Value |
Description |
21064 |
Alpha 21064 |
21066 |
Alpha 21066 |
21164 |
Alpha 21164 |
If SystemInfoUnion.ProcessorArchitecture is PROCESSOR_ARCHITECTURE_PPC, ProcessorLevel is of the form xxxx, where xxxx is a 16-bit processor version number (the high-order 16 bits of the Processor Version Register). The member can be one of the following values:
Value |
Description |
1 |
PPC 601 |
3 |
PPC 603 |
4 |
PPC 604 |
6 |
PPC 603+ |
9 |
PPC 604+ |
20 |
PPC 620 |
|
ProcessorRevision |
Architecture-dependent processor revision. The following table shows how the revision value is assembled for each type of processor architecture:
Processor |
Description |
Intel 80386 or 80486 |
A value of the form xxyz.
If xx is equal to 0xFF, y - 0xA is the model number, and z is the stepping identifier. For example, an Intel 80486-D0 system returns 0xFFD0.
If xx is not equal to 0xFF, xx + 'A' is the stepping letter and yz is the minor stepping.
|
Intel Pentium, Cyrix, or NextGen 586 |
A value of the form xxyy, where xx is the model number and yy is the stepping. Display this value of 0x0201 as follows:
Model xx, Stepping yy.
|
MIPS |
A value of the form 00xx, where xx is the 8-bit revision number of the processor (the low-order 8 bits of the PRId register). |
ALPHA |
A value of the form xxyy, where xxyy is the low-order 16 bits of the processor revision number from the firmware. Display this value as follows:
Model A+xx, Pass yy.
|
PPC |
A value of the form xxyy, where xxyy is the low-order 16 bits of the processor version register. Display this value as follows:
xx.yy.
|
|
ProcessorType |
An obsolete member that is retained for compatibility with Windows NT 3.5 and earlier. Use the SystemInfoUnion.ProcessorArchitecture, ProcessorLevel, and ProcessorRevision members to determine the type of processor.
Windows Me/98/95: Specifies the type of processor in the system. This member is one of the following values:
PROCESSOR_INTEL_386
PROCESSOR_INTEL_486
PROCESSOR_INTEL_PENTIUM
|
SystemInfoUnion | Union for the OemId, ProcessorArchitecture, and Reserved fields of the SYSTEM_INFO structure. See Kernel.SYSTEM_INFO_UNION. |
Public Instance Methods
See Also
Kernel.SYSTEM_INFO Class | Tao.Platform.Windows Namespace | GetSystemInfo | Kernel.SYSTEM_INFO_UNION