Urs Koenig (QL) wrote: > Because we have a Windows Freeze case at work which is very hard to trace > and analyse (visitors of the ZX-TEAM meeting will know) I wanted to at least > catch the QL/E Freeze case. > Last Thursday I was repeatedly able to reproduce the freeze using my QL/E > v3.13 wip (work-in-progress). I then reduced the steps needed to get the > freeze. In the end I can say you can get the freeze when doing this > scenario: > 1. Start QL/E (e.g. start QPC2.exe). > 2. From now on do not use the mouse, do not use the mouse pointer. > 3. After the BOOT sequence of QL/E is completed (SBASIC job 0 is minimised > as "System" in the button frame, wait until Photo QL has completed > displaying the QL collection photo) press <ALT>+<\> to pick "System". > 4. Now that you see the BOOT process windows in the middle of the screen > press <ALT>+<F> to pick QPAC2 "Files". > 5. Once QPAC2 "Files" is on screen press <F2> then <W> followed by <ENTER> > to choose the drive "WIN1_" as the Source Directory. > 6. Now the QL/E system freezes!
Okay, I can reproduce it. But the crash happens in the screen driver. The problem is that SMSQ/E does not have any kind of memory protection and you're loading a quadrillion extensions at boot-time. Any one of them could be responsible of corrupting the memory in a way that QPAC2 will crash later on without being at fault itself. Trying to track down these kind of problems is a huge pain, not sure if I can find the time to do so. Cheers, Marcel _______________________________________________ QL-Users Mailing List
