Tag: Debugging Assembler

Learn what causes and S0C9 abend and how to fix it. Watch this video and experiment with this code.

Go large, go Grande. There’s no end to the ways to load a register. Do you remember what type of instruction this is? Is is indexed? How about the displacement size? Review and remember here. Have a great weekend!

This week, instead of an article about one instruction, I give you a visual depiction of the eleven load operations for an IBM z16. There are no words, so it’s something like a puzzle. You have to parse the diagrams to glean the information. Much is left out of course. No talk of addressing techniques, just the results of executing each instruction is depicted. But you may learn a new instruction or reinforce what you already know. Enjoy—it helped me. View the diagrams here. Let me know if you would like a video about this.

I Just finished turning in grades for the latest semester, and now I have a bit more time for adding to the blog.  Want to know more about S0C4 abends?  Then this video is for you.  You can also find the code for the video along with lots of other videos here.  More debugging videos are on the way, so check back soon.

Stumped by a S0C1?  S0C4? S0C7?  Master dump reading with this series of videos that cover dump reading basics.

The series of debugging sessions will cover various abends.  The first video starts with some helpful suggestions for debugging a S0C1. Along the way, you’ll also learn some debugging principles that apply to any kind of dump reading you need to do. Here is the video. Let’s get started!