VSCodium acting weird… out of the blue

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 program has around 280 lines. And for some reason VSCodium decided the last line I entered needed a space before it. Not any of the comments above it. Just that line! I wasn’t even positioned at that line when I pressed Ctrl-S.

WTH?

Fortran example problem on IBM 1401 emulator – solved

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 on many things, and didn’t have an immediate answer to my problem off the top of his head. He did ask me to clarify some points. He was nice to respond. I’m glad I solved it and don’t have to bother him further. Although he didn’t act as if it was a bother.

EXAMPLE1Download

Simh & Unix 6

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

: hp(0,0)hptmunix
mem = 177344
# MV 
# MV
# 
# MV HPTMUNIX UNIX
# PWD
/
# L
# LS
BIN
BOOT
DEV
ETC
HPHTUNIX
LIB
RPHTUNIX
RPTMUNIX
TMP
UNIX
USR
#

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 things appear in uppercase. It doesn’t appear that way in the install instructions. But it’s obvious that it’s accepting the commands. I’m aware that every command available in modern Linux would not be available in ancient Unix.

There are other recommended steps that I won’t do. If this was 1975, I might, if I thought the outcome was worth it. I still would have thought it was a stupid, look at how smart I am, process, even back then because I know what computers are capable of. But the whole process is so archaic and I have little desire to dig in more. It maybe the worst install I’ve ever done, did they purposely try and make it complex. Mission accomplished! What… the keyboard/display wasn’t capable of generating/displaying meaningful prompts? Hey look at me I’m sitting here with my pocket protector and slide rule, entering character that no one (unless they consulted a manual) would understand. No such thing as ASCII? It’s obviously even more archaic than installing Slackware, 21 years later, in 1996.

Ran Fortran example on IBM 1401 emulator

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.

EXAMPLE1-1Download

It’s cool that it ran, however the output doesn’t match page 49 of this PDF. The source is furthur up in the PDF and it appears the same as what I ran.

Here is a real 1401, running the same program. Where I can also see the 1st PARAM card (not shown in the Fortran example PDF), matches my source.