PRB: Reset A20 Bit Set During DPMI Simulate Interrupt Crash

ID: Q76582

The information in this article applies to:

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

SYMPTOMS

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

RESOLUTION

Applications that use the "Simulate Real Mode Interrupt" function must ensure that this bit is not set.

MORE INFORMATION

The "Simulate Real Mode Interrupt" function is documented in the DPMI specification.

Additional query words: 3.00 no32bit 3.10

Keywords : kb16bitonly
Version : WINDOWS:3.0,3.1
Platform : WINDOWS
Issue type :