Contains information about the current RT machine configuration.

You can read this structure using CopyRtSystemInfo

Syntax

typedef struct tagSysInfo {
    char        _reserved0[15];
    BYTE        _reserved15;
    char        _reserved16[30];
    WORD        _reserved46[2];
    BYTE        _reserved50;
    DWORD       _reserved51;
    WORD        _reserved55;
    WORD        NucleusTickInterval;
    WORD        KernelTickRatio;
    BYTE        _reserved61;
    BYTE        _reserved62;
    BYTE        _reserved63;
    BYTE        MajorVersion;
    BYTE        MinorVersion;
    WORD        BuildNumber;
    WORD        _reserved68;
    DWORD       PentiumTicksPerUsec;
    BYTE        _reserved74[3];
    BYTE        LogicalCPUId;
    BYTE        NodeType;
    BYTE        NumProcs;
    BYTE        _reserved80;
    BYTE        _reserved81;
    WORD        DelayConst;
    DWORD       _reserved84;
    WORD        _reserved88;
    BYTE        _reserved90;
    BYTE        CPUType;
    DWORD       _reserved92;
    BYTE        TimeZone;
    DWORD       _reserved97;
    DWORD       _reserved101;
    DWORD       _reserved105;
    BYTE        CPUModel;
    DWORD       CPUFeatures;
    BYTE        LogicalPageSize;
    BYTE        _reserved115[6];
    DWORD       SystemLockAddress;
    RTHANDLE    INscopeSeg;
    BYTE        SystemFlags;
    BYTE        UserReserved[32];
} SYSINFO, *LPSYSINFO;

Fields

NucleusTickInterval

The tick interval of the RT kernel high-level clock. This field is always set to 10, indicating a 10ms clock interval.

KernelTickRatio

The number of low-level clock ticks per high-level clock interval. This field is configurable.

MajorVersion

The major version number of this kernel.

MinorVersion

The minor version number of this kernel.

BuildNumber

The build number of this kernel.

PentiumTicksPerUsec

The number of counts per microsecond made by the Pentium timestamp counter.

LogicalCPUId

The ID used by the inter-node messaging software.

NodeType

This field indicates the type of this node. It may take one of the following values:

NODE_TYPE_SINGLE_CPU	Node on a single-core Windows host.
NODE_TYPE_SHARED_MP	Node sharing a processing thread with Windows in a multicore system.
NODE_TYPE_DEDICATED_MP	Node with its own processing thread in a multicore Windows host.
NODE_TYPE_REMOTE_MP	Node on a multi-core INtime host.

NumProcs

The number of processor cores or threads available on the system

DelayConst

A value computed by the real time kernel during initialization which is used by the OS for timing purposes.

CPUType

A number that indicates the CPU type installed in this system. For information about the numbers, see the Pentium* and Pentium Pro* hardware reference manuals.

TimeZone

Reserved for future use. Currently set to 0 (zero).

CPUModel

A number that indicates the CPU model of this system. For information about the numbers, see the Pentium* and Pentium Pro* hardware reference manuals.

CPUFeatures

Information returned by GetCPUID instruction that identifies the features of this CPU. For information about the features, see the Pentium* and Pentium Pro* hardware reference manuals.

LogicalPageSize

Paging system allocation size.

SystemLockAddress

Address of system spinlock.

InscopeSeg

Handle for INscope data area.

SystemFlags

Bitfield indicating the presence of certain features.

SYSFLAG_XM_MODE	Indicates XM mode is enabled.
SYSFLAG_FPE_SEH	Indicates that floating point and SSE exceptions will be handled by SEH instead of the legacy SetRtExceptionHandler method.
SYSFLAG_PAE_MODE	Indicates that Extended Physical Memory mode is enabled.

UserReserved

Reserved for future use.