Monthly Archives: April 2024

Using simh. I got this here. Although these steps (make) needed to be done before simh. Created gendate, but 3 others failed as seen below.

I really enjoy period movies. And Hidden Figures (2016), takes place in the late 1950s early 1960s, and it’s about the space program and a IBM 3090 and Fortran, play a key role. I read here that computer sounds, (and other interesting facts) from the movie were recorded in the 1401 Demo Lab at the …

Continue reading “Hidden Figures”

For the below, small 3MB video. Max upload size… in MultiPHP INI Editor…in cPanel. Changed from 2MB to 500MB.

Used vscodium to make changes to a program. Added a comment about the change. Pressed Ctrl-S to save like I always do. It adds a line above my comment. I’m I going crazy? Look at File menu, sure enough Ctrl-S is the save shortcut. If you save from the menu… same thing. So this particular …

Continue reading “VSCodium acting weird… out of the blue”

Why does WordPress sometimes tell me something like this is a comment? It’s NOT. It’s part of the main text!

I solved the problem, I described here. I was using the IBM 1401 simulator V3.8-1. All I did was switch to IBM 1401 simulator Open SIMH V4.1-0, and now the results match the video and the IBM 1401 Fortran manual. Here is the new output. I actually contacted Mike Albaugh, from that video. He’s working …

Continue reading “Fortran example problem on IBM 1401 emulator – solved”

As a fan of DEC and Linux… I don’t know why it’s taken me so long to put Unix on the PDP-11. My thought process tells me Version 6 sounds like it might not be so old, however it was released in May 1975. Anywho… the end of the install https://decuser.github.io/unix/research-unix/v6/2022/10/19/installing-and-using-research-unix-v6-in-open-simh-pdp-11-emulator.html I don’t know why …

Continue reading “Simh & Unix 6”

A computer announced by IBM in 1959. Older than the 360. It was actually a very successful computer for it’s time. Lot’s of interesting stuff here. Using simh, and this. It seemingly compiled/ran successfully, but results don’t match book. Perhaps a source problem. It’s late getting tired, more tomorrow. It’s cool that it ran, however …

Continue reading “Ran Fortran example on IBM 1401 emulator”

I found this very interesting article about the history of Space War and the different computers it ran on.

The red circle with 7 in it implies there are 7 updates to apply. But when I go to the page…what…where are they? And yes, I scrolled down.