Microsoft KB Archive/76582

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PRB: Reset A20 Bit Set During DPMI Simulate Interrupt Crash

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Q76582

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The information in this article applies to:


 * Microsoft Windows Software Development Kit (SDK) versions 3.0, 3.1

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SYMPTOMS
A Windows-based application that specifies &quot;reset interrupt controller and A20 line&quot; when calling the MS-DOS protected mode interrupt (DPMI) function &quot;Simulate Real Mode Interrupt&quot; can cause Windows to crash.

RESOLUTION
Applications that use the &quot;Simulate Real Mode Interrupt&quot; function must ensure that this bit is not set.

MORE INFORMATION
The &quot;Simulate Real Mode Interrupt&quot; function is documented in the DPMI specification.

Additional query words: 3.00 no32bit 3.10

Keywords : kb16bitonly

Issue type :

Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 kbWinSDK310