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S/370
IBM Mainframes IBM mainframes, and especially the ones under 370 architecture, have a warm spot in my heart. For most of my technical carrier I’ve been working on these magnificent machines. Their operating systems are unbelievably efficient as compared to the bloatware we see floating around today. My first experience:… Read the rest
Computers
In this part of the site you will find info on the computers I owned and worked with, as well as general info about computer systems. HP 2000 I started out on a Hewlett Packard HP2000. That was on my Technical School (HTS in Dutch), where I studied Telecommunications and… Read the rest
Construction
Construction Building models of reality in which we can test our control programs. For this we can use all kinds of construction tools. I grew up using LEGO, and later on added Fisher Technik. … Read the rest
S/370 printing to PDF
S/370 printing Wouldn’t we all like to have our S/370 output out of Hercules look like this? MVS print-outsVM/370 printouts How do we do that? There’s quite a bit of tinkering involved. I will do my best to describe how I did it below and on a few other pages.… Read the rest
S/370 Operating Systems
So, let’s talk OS’s. As mentioned, there are three of them in the public domain. I’ll mention them below, describe them briefly and point you to more extensive information and downloadable versions. MVS3.8j MVS, or Multiple Virtual Storage, is an OS that is used in the largest computing sites. It… Read the rest
Installing Hercules
Hercules is the name of an emulator program that simulates being an IBM mainframe. It can host each of IBM’s public domain OS’s, OS/VS1, MVS3.8j and VM370. Hercules runs on a lot of hardware, under Windows, Linux, and MacOS. Lots of information about Hercules can be found here. Installing Hercules… Read the rest
SCEPSIS
Simple CPU Emulator Program (Student Instruction System). That is the name of my new project. The idea stems from my hardware project, the 8bit computer. I thought, well, if this s possible in hardware, perhaps I can make a software version to give other people the chance to experiment with… Read the rest