BUG: QueryPerformanceFrequency Returns Wrong Value on PC 9800

ID: Q152145

The information in this article applies to:

Microsoft Win32 Software Development Kit (SDK), used with:
- Microsoft Windows versions 95, 4.0
- Microsoft Windows NT 3.51

SYMPTOMS

QueryPerformanceFrequency() called from an application running on an NEC PC9800 Series computer with Japanese Win95 (PC9800 version), returns a static value (1193180 Ticks/sec) regardless of the actual frequency of the high-resolution performance counter. On NEC PC 9800 Series computers, the static value can be 2457600 ticks/sec.

RESOLUTION

The same API returns the correct value on NEC PC9800 Series computers running Windows NT PC 9800 version.

This problem does not exist on any other platforms.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: 4.00


Keywords          : kbIntlDev 
Version           : 4.00 | 3.51
Platform          : NT WINDOWS 
Issue type        :

Last Reviewed: March 10, 1999