Hi Sergey, Alejandro,

http://www.markwilson.co.uk/blog/2005/01/troubleshooting-ms-dos-application.htm

This blog entry seems to be right on this point. We recently got new machines, dual core, and instantly noticed lockups. With the updated NTVDM, (where the processor affinity is set for CPU0, the lockups disappeared.


>I have seen reports about this problem. No resolution exists at this time, AFAIK.
>
>>Our FPDOS 2.6 application (exe file) freezes from time to time in some XP SP2 machines. It doesn't happen in all machines or all the time in those machines that have a problem. I noticed at one time in development that it seemed to occur when moving the mouse.
>>
>>We have tried running the application in compatibility mode with Windows 2000 (right click in icon)
>>
>>Config.NT:
>>

>>dos=high, umb
>>device=%SystemRoot%\system32\himem.sys
>>files=99
>>REM Installed by HASP key software
>>device=%SystemRoot%\system32\haspdos.sys
>>

>>
>>Autoxec.NT:
>>

>>@echo off
>>REM Install CD ROM extensions
>>lh %SystemRoot%\system32\mscdexnt.exe
>>
>>REM Install network redirector (load before dosx.exe)
>>lh %SystemRoot%\system32\redir
>>
>>REM Install DPMI support
>>lh %SystemRoot%\system32\dosx
>>

>>
>>Any ideas?
>>
>>TIA,
>>
>>Alex