ID Number: Q73335
3.00
WINDOWS
buglist3.00 fixlist3.10
Summary:
PROBLEM ID: WIN9106003
SYMPTOMS
Under WDEB386, when the V2 command is used to disable debugger
trapping of non-maskable interrupts (NMIs), the interrupts are
"eaten" and not passed to the VMM for processing.
CAUSE
The V2 command causes an IRETD instruction to be performed for each
NMI. This was implemented to ease debugging on machines equipped
with auto-switch video boards, which generate an NMI each time the
video registers are reprogrammed and do not allow disabling this
NMI generation.
RESOLUTION
Microsoft has confirmed this to be a problem in the Windows
Software Development Kit (SDK) version 3.0. To reflect the NMI to
the VMM, use the GZ command when an NMI occurs.
This problem was corrected in the Windows SDK version 3.1.
Additional reference words: 3.00