Category Archives: Debugging

Solaris 2.6, 7, and 8 Crashes on Pentium 4 and Later

Posted on February 27, 2015 by Michal Necasek

A blog reader recently pointed to an interesting problem which affects older Solaris releases on certain systems. The symptoms (crash/reboot) may at first glance look like the previously described problem which affected Solaris 2.5.1 and 2.6, but both the cause and … Continue reading →

Posted in Bugs, Debugging, Intel, Solaris | 2 Comments

OS/2 Kernel Debugger and MVDM Interrupts

Posted on August 29, 2014 by Michal Necasek

While working on an unrelated problem, I noticed a strange behavior of one of my OS/2 VMs running OS/2 Warp 4.52. To cut a long story short, if an unhandled floating-point exception occurred in a DOS window (VDM, or Virtual … Continue reading →

Posted in Bugs, Debugging, OS/2 | 12 Comments

Have You Ever Used One of These?

Posted on January 31, 2014 by Michal Necasek

Still on the theme of unusual hardware… in my junk pile there’s one of these rather special little parts: As the label on the PCB says, this is a 486 pod for a Periscope IV debugger. The Periscope Company of … Continue reading →

Posted in Debugging, PC hardware | 35 Comments