Computer organization – Page 2

HAM-gadget (1) – building a shack gadget

Posted on2021-10-222021-10-23

Today I worked on version 0.1 of my new project. It’s in the prototype stage as you can see in the picture below. For this test it’s an Arduino Uno (clone by Velleman), two DS18B20 temperature sensors and two 20 x 4 displays. This version is for setting up the… Read the rest

Uptime > 1 year

Posted on2021-10-012021-10-012 Comments

My Linux server (Debian 10 ‘Buster’) is running over one year now:… Read the rest

Current workplace

Posted on2021-09-172021-09-17

This is how my current workplace looks.… Read the rest

Logitech MX Vertical

Posted on2021-09-172021-09-17

The ergonomic mouse I talked about earlier was an almost instant relief on my lower arm muscles. Therefor I would like to have something like that after having to send back the previous ergonomic mouse. This resulted in me searching for alternatives and ultimately ordering the Logitech MX Vertical mouse.… Read the rest

DasKeyboard X50Q arrived

Posted on2021-09-142021-09-17

Today a new keyboard arrived, DasKeyboard X50Q to be precise. To the right, you can see a picture of the keyboard, showing one of six default onboard back light configurations. I decided that I did not want a wireless keyboard, and this one came with a 2 meter long braided… Read the rest

Testing keyboard / mouse

Posted on2021-09-042021-09-17

Today I tested a nice keyboard and mouse combination. Read report below the picture. Keyboard The keyboard is a Mistel X-VIII Gloaming mechanical keyboard. A separate wrist rest was offered. The board looks very nice and it types very well with its Cherry MX silent red switches. But… the computer… Read the rest

BIOS upgrade

Posted on2021-08-062021-08-06

Today, looking for (virtualization) features in my computer, I came across the firm ikbenstil.nl. It came highly recommended by my son in law, a geek like me. I called them and they were indeed very helpful and customer friendly. They showed me the way around my BIOS and helped me… Read the rest

My command center

Posted on2019-12-242019-12-242 Comments

In the image you can see my ‘command center’. I run 5 emulated mainframes, four of them on Raspberry Pi’s and one of the in the cloud. With all five system you see a 3270 terminal and the emulator console next to each other: Top left is my cloud system,… Read the rest

Video series about SCEPSIS

Posted on2019-07-182019-07-18

I’m in the process of producing a viedo series about my Simple CPU emulator, SCEPSIS. You can find the expaning playlist here: playlist for SCEPSIS videos… Read the rest

My new rig

Posted on2019-06-262019-06-271 Comment

Noise New Old Today my new rig arrived. See specs below. The primary reason for the new purchase is the sound of the old one that went between 50 and 60 dB; whereas t he new one has components that where selected for silence, and it pays off: Speed New… Read the rest

SCEPSASM – The SCEPSIS Assembler

Posted on2019-06-202019-06-20

SCEPSASM is an assembler that will – based on a language definition (langdef) file – parse a source file and convert it into an object memory file that can be executed with the SCEPSIS emulator. The SCEPSASM main screen The current version works and it’s output OBJect files will be… Read the rest

SCEPSIS

Posted on2019-05-252019-06-113 Comments

Have a look at my new project, the ‘Simple CPU Emulation Program (Student Instruction System)‘… SCEPSIS control panel… Read the rest

tmux terminal organizer

Posted on2019-05-042019-05-06

tmux is short for Terminal Multiplexer. And that’s what it does. It’s a neat little tool that I use to be able to have multiple sessions open at the same time and to be able to switch between them. As an example you can click on the picture to the… Read the rest

IBM/370 Reference Summaries

Posted on2018-12-242019-03-23

I kept a couple of Reference Summary cards from ancient times. I photographed them to be shared with the community. See the cards themselves here. System/370 DOS/VS POWER/VS Reference Summary CICS Master Terminal Operator Reference Summary IBM Reference Card | COBOL System/370 Reference Summary… Read the rest

Hercules S/370 print to PDF

Posted on2018-12-212019-03-23

Today I automated the process of printing MVS output from the Hercules emulator to PDF files. It makes it much more realistic and nostalgic to look at output on the old ‘zebra-paper’, don’t you think? Example below. Also check my project page to see how it’s done.… Read the rest