QAPLUS 4.21 Produces Errors with EMM386.EXE (76788)

The information in this article applies to:
    Microsoft MS-DOS operating system 5.0
    Microsoft MS-DOS operating system 5.0a

This article was previously published under Q76788


QAPLUS version 4.21 DMA tests do not operate correctly when EMM386.EXE is loaded. Errors vary based upon machine type, but when running the DMA tests the system may reboot, stop responding (hang), or never complete the DMA tests. This is specific to an interaction between EMM386.EXE and QAPLUS. Removing EMM386.EXE from the CONFIG.SYS file alleviates the error condition.


If EMM386 is loaded under MS-DOS version 5.0 (parameters unimportant) and Windows 3.0 is running, a QAPLUS DMA test will reboot the system or it will lock it up (preventing a CTRL+ALT+DEL reboot).

Modification Type: Major Last Reviewed: 9/30/2003
Keywords: KB76788