Monthly Archives: March 2022

Nerd alert! Wrote a small Assembler to change case (upper/lower) of a single character. Used the SNAP macro to look at storage. Replaced old school method of establishing address-ability with the SUBENTRY/SUBEXIT macros.

Should have done this first! Found this Linux Mint post which seemed reasonable. Did “apt version liblog4j2-java” also prefixed it with sudo. It returned nothing!

OK. Figuring out how to use this hasn’t been easy. However made some progress. There was a README.md and .txt. Because of past experiences I assumed the .md was just better looking markdown version of the .txt But I was wrong and I looked at the .md first which was no help. Then looked at …

Continue reading “Z390 Portable Mainframe Assembler and Emulator – first steps”

So I assume the “Z390 Portable Mainframe Assembler and Emulator” was installed successfully. Granted I don’t use Java software often however this maybe the only Java software I’ve installed that seemed to install OK with OpenJDK. I believe Oracla Java has always been required before. Now to figure out how to use it.

At first I just downloaded the source bu some messages hinted the “git clone” method might be more straightforward. So, after installing openjdk-8-jdk, preceded to build the emulator. I saved the console install. It was lengthy (over 4300 lines) with many many tests. I saw many interesting messages. Such as (just a small sample)… Verify …

Continue reading “Z390 Portable Mainframe Assembler and Emulator – Install”

sudo apt-get install openjdk-8-jdk

Updated Linux Mint as below post in anticipation of installing Java. Which because of a recent serious Java issue I’m a little leery about. Why do this? Because I read about Z390 Portable Mainframe Assembler and Emulator and it sounds interesting. This PDF says “A test program named ZOPCHECK was developed to verify all 2357 …

Continue reading “Z390 Portable Mainframe Assembler and Emulator”

Update my Linux Mint 20.2 “Uma” to the latest Linux Mint 20.3 “Una”

Searched this log for OCR and came up empty. Used tesseract in the past. So I’m making this entry so I’ll find something next time. Xsane uses gocr but the results were crap.