Hi, guys.

Welcome to vogons! 😁

Issue:
- we get crash to MS-DOS due to "division by zero" error when we press to hold by ~5 seconds "o" key to show "processor occupancy" and we get abnormally little faster than real-time.

Solution:
For Win XP (x86 - 32-bit only) (or newer OS 32-bit only as Win Vista/7/8.1/10) with "cmd" (command prompt) using, should decrease vertical frequency from your preference (eg: 70 Hz or faster) to 60 Hz. 😀
But for Dosbox emulator, we haven't any solution found yet, sorry. 😖 ;(

NOTE: For MS-DOS native only we get NEVER "division by zero"! 😀 But we should show 640x480@60Hz. If you use CRT monitor 19" or bigger screen + videocard with PCI-e 2.0 used then we get 1280x1024 or 1600x1200 or other resolution screen at 85Hz - 85 Hz causes bit too fast. 😉

--> Sorry for bad english. 😉

Good luck! 😁

Best regards. 😉