Monthly Archives: March 2022

Mainframe Assembler Programming Examples

Trying to learn the Z390 Interactive debugger…based on an email I got from Abe from the google user group, who suggested “EXEC.BAT path/file noloadhigh test”. So from there I got to a starting place of “exec MyStuff/case noloadhigh test noinit”. From there I typed h…for help. From there I believe the PSW or PSW16 command …

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When I read about all the cool things this emulator could do I went looking for a video of it on YouTube and I was surprised to find nothing. So I created one in the last few days and uploaded it today. I also copied my case.MLC IBM Assembler program I wrote and used in …

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Just a note for me. The S/370 Assembler.

Nine years old but still interesting…From Share

Keep on your bookshelf…(the Bible) z/Architecture Principles of Operation370 POP Keep by your sideThese are little booklets at one time they were cards. They are most useful if you already know the instructions. These are useful in getting back to Assembler. The System 370 reference is the what I used back in the day when …

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Wrote a little 370 assembler program. But added a 64 bit instruction (LG), that wouldn’t have been available to the 370 Assembler. And it assembled fine.

AT&T installed fiber in the neighborhood a few weeks ago. Today they came by to schedule me new equipment for the fiber. I recently did a speedtest because a Twitter user asked people what their speed was. Turns out mine was pretty slow, compared to most responding, and I was paying $53. AT&T said new …

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Posted my first question on the x390 user group. About how to get a dump I got a response saying I should use 3 options from the command line instead of the console. ./asmlg ../MyStuff/case.MLC noinit nocodepage dump>dump.txt

Requested and was excepted into the google user group!