Sgeo
@sgeo.bsky.social
Earlier this week I made a video showing how to use IBM's own 1401 emulator (a modified version) in Hercules.
I still have some research to do on things like using tapes, the card punch, and sense switches. Also, documentation on the differences between the modified versions we have.
I still have some research to do on things like using tapes, the card punch, and sense switches. Also, documentation on the differences between the modified versions we have.
Running an IBM 1401 program in Hercules using Sim1401 for System/360
YouTube video by Sgeo
www.youtube.com
November 8, 2025 at 12:09 AM
Earlier this week I made a video showing how to use IBM's own 1401 emulator (a modified version) in Hercules.
I still have some research to do on things like using tapes, the card punch, and sense switches. Also, documentation on the differences between the modified versions we have.
I still have some research to do on things like using tapes, the card punch, and sense switches. Also, documentation on the differences between the modified versions we have.
@righto.com did any emulators ever start using Unicode characters to represent 1401 characters?
October 28, 2025 at 10:16 PM
@righto.com did any emulators ever start using Unicode characters to represent 1401 characters?
I wonder if I found a bug in IBM VM/370's START command. The below code should look at the PARM, then exit successfully. But when LOADed then STARTed, it crashes. START * works fine though, as though START doesn't give valid PARM
October 8, 2025 at 6:33 AM
I wonder if I found a bug in IBM VM/370's START command. The below code should look at the PARM, then exit successfully. But when LOADed then STARTed, it crashes. START * works fine though, as though START doesn't give valid PARM
Some humor in Evergreen State College's student newspaper (from 1996: collections.evergreen.edu/s/archives/i...)
I've been seeking out information about the BASIC that ran on "Hewpie," it seems to be custom, and there's a simulator of it on CYBIS
I've been seeking out information about the BASIC that ran on "Hewpie," it seems to be custom, and there's a simulator of it on CYBIS
October 3, 2025 at 9:49 PM
Some humor in Evergreen State College's student newspaper (from 1996: collections.evergreen.edu/s/archives/i...)
I've been seeking out information about the BASIC that ran on "Hewpie," it seems to be custom, and there's a simulator of it on CYBIS
I've been seeking out information about the BASIC that ran on "Hewpie," it seems to be custom, and there's a simulator of it on CYBIS
Well, this was confusing. Error about missing "dyn", and I thought it was there. Until I tried retyping it. VS Code was suggesting it was implied.
September 12, 2025 at 1:19 AM
Well, this was confusing. Error about missing "dyn", and I thought it was there. Until I tried retyping it. VS Code was suggesting it was implied.
Reposted by Sgeo
We must stand resolutely against political assassination and political violence of all kinds, and just as resolutely against everyone who exploits acts of violence as the pretext or excuse for political repression of political opponents.
Very, very bad stuff coming from leading right-wingers
September 10, 2025 at 9:12 PM
We must stand resolutely against political assassination and political violence of all kinds, and just as resolutely against everyone who exploits acts of violence as the pretext or excuse for political repression of political opponents.
PLATO/CYBIS had a BASIC simulator, but I'm not sure... which BASIC it's simulating.
This USING command seems distinctive. It also supports matrix operations.
This USING command seems distinctive. It also supports matrix operations.
![Screenshot of PLATO terminal BASIC help, with the following explanation of the USING command:
using
using...of
The "using" statement is used to execute the text
of a different line number in place of the current line.
100 print "Hi, Matey"
120 if a[b[33×z9- not sqr(a[1])],3] then print "wrong"
130 using 100
140 using 120
150 using x+5 of 100,100,120
When program execution reaches line 130, the text
of the referenced line (100) will be executed (print
"Hi, Matey").
The "using" statement is really handy to use in
situations where you want to execute an instruction
more than once in a program and that instruction is
very long or complex, such as the one in line 120.
Line 140 will be executed as if it were "if a[b[33×...
etc.".
As shown in line 150, the conditional form may be
used with the "using" statement.
NEXT for another statement
BACK for more options
SHIFT BACK to return to the simulator](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:jz7cxchv4deaqzdyzmujwkti/bafkreibwrf5mh3ew7jgo2bbikjmia26x3f2syzyb763axwebkhx4w3or3i@jpeg)
September 5, 2025 at 8:47 PM
PLATO/CYBIS had a BASIC simulator, but I'm not sure... which BASIC it's simulating.
This USING command seems distinctive. It also supports matrix operations.
This USING command seems distinctive. It also supports matrix operations.
The LaserActive news has made me curious about how the analog RF... signal actually works.
So came across www.youtube.com/watch?v=G2HB... (and there's a playlist of these). Just started watching, so not sure how much detail these go into, but this is... interesting.
So came across www.youtube.com/watch?v=G2HB... (and there's a playlist of these). Just started watching, so not sure how much detail these go into, but this is... interesting.
Pioneer Video Tuning Fork vol 1 (CD/LD format info)
YouTube video by Chad Page
www.youtube.com
September 1, 2025 at 7:19 PM
The LaserActive news has made me curious about how the analog RF... signal actually works.
So came across www.youtube.com/watch?v=G2HB... (and there's a playlist of these). Just started watching, so not sure how much detail these go into, but this is... interesting.
So came across www.youtube.com/watch?v=G2HB... (and there's a playlist of these). Just started watching, so not sure how much detail these go into, but this is... interesting.
Reposted by Sgeo
the founders envisioned a madman potentially becoming president
what the founders did not envision was the majority of Congress and the Supreme Court becoming part of a cult of personality around said president. it’s both pathetic and horrifying
what the founders did not envision was the majority of Congress and the Supreme Court becoming part of a cult of personality around said president. it’s both pathetic and horrifying
Rep. Greg Steube: "We in the Congress have to back up everything that the president is doing. I have filed dozens of bills to make permanent all of Trump's executive orders."
August 29, 2025 at 2:08 PM
the founders envisioned a madman potentially becoming president
what the founders did not envision was the majority of Congress and the Supreme Court becoming part of a cult of personality around said president. it’s both pathetic and horrifying
what the founders did not envision was the majority of Congress and the Supreme Court becoming part of a cult of personality around said president. it’s both pathetic and horrifying
IBM made pencils and General Mills made computers.
August 20, 2025 at 6:30 PM
IBM made pencils and General Mills made computers.
The IBM PC diagnostics disk has an option for preparing to relocate the system. Apparently this refers to physical relocation. I wonder why the computer needs to be "prepared", what exactly that does.
August 13, 2025 at 4:48 PM
The IBM PC diagnostics disk has an option for preparing to relocate the system. Apparently this refers to physical relocation. I wonder why the computer needs to be "prepared", what exactly that does.
Reposted by Sgeo
Imagine asking a human being how its own neurons work. It’s like that but sillier.
The #1 thing that blows my mind about how most people use LLMs: they believe if they ask the LLM a question about how it works or how accurate it is, the LLM will truthfully answer them.
I have seen SO many seemingly-smart people do this.
I have seen SO many seemingly-smart people do this.
i don't think it helps that the llms constantly lie to the user about the capabilities of llms as part of its whole obsequious fawning style of interaction that oversells its abilities and obscures its obvious limitations by fundamentally misrepresenting how the technology works
August 11, 2025 at 6:36 PM
Imagine asking a human being how its own neurons work. It’s like that but sillier.
Reposted by Sgeo
The lack of differentiation between trusted and untrusted state and input is endlessly devilish in trying to secure this technology. It completely violates all security paradigms we've tried to enforce for coming on half a century
NEW: In a likely first, security researchers have shown how generative AI agents can be hijacked to cause physical consequences.
They tricked Google's Gemini AI into turning off smart home lights, opening windows, and turning on a boiler.
They hid instructions to the AI in a *calendar invitation*
They tricked Google's Gemini AI into turning off smart home lights, opening windows, and turning on a boiler.
They hid instructions to the AI in a *calendar invitation*
Hackers Hijacked Google’s Gemini AI With a Poisoned Calendar Invite to Take Over a Smart Home
For likely the first time ever, security researchers have shown how AI can be hacked to create real world havoc, allowing them to turn off lights, open smart shutters, and more.
www.wired.com
August 9, 2025 at 1:34 AM
The lack of differentiation between trusted and untrusted state and input is endlessly devilish in trying to secure this technology. It completely violates all security paradigms we've tried to enforce for coming on half a century
Reposted by Sgeo
Weird how when you use drugs for what they're designed for they can be pretty great, and when you use them for something they're absolutely not designed for, you can totally die
youtu.be/tD8cqvlC0BE
youtu.be/tD8cqvlC0BE
Ivermectin Actually IS a Miracle Drug
YouTube video by SciShow
youtu.be
August 8, 2025 at 6:17 PM
Weird how when you use drugs for what they're designed for they can be pretty great, and when you use them for something they're absolutely not designed for, you can totally die
youtu.be/tD8cqvlC0BE
youtu.be/tD8cqvlC0BE
Reposted by Sgeo
Firing the BLS Commissioner — the wonk in charge of the statisticians who track economic reality — is an authoritarian four alarm fire.
It will also backfire: You can't bend economic reality, but you can break the trust of markets. And biased data yields worse policy.
It will also backfire: You can't bend economic reality, but you can break the trust of markets. And biased data yields worse policy.
August 1, 2025 at 8:54 PM
Firing the BLS Commissioner — the wonk in charge of the statisticians who track economic reality — is an authoritarian four alarm fire.
It will also backfire: You can't bend economic reality, but you can break the trust of markets. And biased data yields worse policy.
It will also backfire: You can't bend economic reality, but you can break the trust of markets. And biased data yields worse policy.
The IBM 305 RAMAC seems to be famous for being the first (commercial? Or any?) computer with a hard drive, but I'm more fascinated by it being hybrid stored program and control panel/plugboard
July 9, 2025 at 9:55 PM
The IBM 305 RAMAC seems to be famous for being the first (commercial? Or any?) computer with a hard drive, but I'm more fascinated by it being hybrid stored program and control panel/plugboard
Reposted by Sgeo
Republicans go to the mat to hurt Americans, deny us opportunities and support and to let millions die.
Democrats go to the mat to save healthcare, save jobs, save rights, save towns and cities and communities, and save lives.
The parties are not the same.
Democrats go to the mat to save healthcare, save jobs, save rights, save towns and cities and communities, and save lives.
The parties are not the same.
If @hakeem-jeffries.bsky.social keeps going to 1:23 pm ET, he will have set a new record.
In 2021, Kevin McCarthy logged a 8-1/2 hour speech to delay the Build Back Better vote.
In 2021, Kevin McCarthy logged a 8-1/2 hour speech to delay the Build Back Better vote.
July 3, 2025 at 5:23 PM
Republicans go to the mat to hurt Americans, deny us opportunities and support and to let millions die.
Democrats go to the mat to save healthcare, save jobs, save rights, save towns and cities and communities, and save lives.
The parties are not the same.
Democrats go to the mat to save healthcare, save jobs, save rights, save towns and cities and communities, and save lives.
The parties are not the same.
Bitwise operations in Javascript are all convinced you're using 32-bit numbers. Even bitwise OR.
June 3, 2025 at 5:26 AM
Bitwise operations in Javascript are all convinced you're using 32-bit numbers. Even bitwise OR.
TIL that there's such a thing as BGP hobbyists. I had been under the impression that access to BGP is.. restricted to ISPs?
May 24, 2025 at 12:24 AM
TIL that there's such a thing as BGP hobbyists. I had been under the impression that access to BGP is.. restricted to ISPs?
Reposted by Sgeo
In recent memory, they assembled a giant package of legislation called Build Back Better -- healthcare reform, child & elder care, voting reform, energy reform, etc. etc. That's what they want. That's their agenda. It's not a mystery. They just didn't, and don't, have the votes to pass it.
people love to talk about dem messaging problems and those do exist but the core issues are still substantive. what even are they trying to message? i follow politics to an unhealthy degree and beyond “egg prices!” i don’t know what the party wants to do with power.
May 21, 2025 at 7:02 PM
In recent memory, they assembled a giant package of legislation called Build Back Better -- healthcare reform, child & elder care, voting reform, energy reform, etc. etc. That's what they want. That's their agenda. It's not a mystery. They just didn't, and don't, have the votes to pass it.
What is "IMAP-mailbox-name" and why is it listed as an encoding?
Also it's weird seeing CESU-8 as an encoding one can choose.
Also it's weird seeing CESU-8 as an encoding one can choose.
May 21, 2025 at 3:20 AM
What is "IMAP-mailbox-name" and why is it listed as an encoding?
Also it's weird seeing CESU-8 as an encoding one can choose.
Also it's weird seeing CESU-8 as an encoding one can choose.
Netscape Communicator Professional included a 3270 emulator. So I went onto Forum3270 with it.
May 15, 2025 at 12:08 AM
Netscape Communicator Professional included a 3270 emulator. So I went onto Forum3270 with it.
Reposted by Sgeo
The anti-vaccine crowd say they just want to “see the evidence” in the form of placebo-controlled randomized trials.
But we've done these trials. And we know our vaccines work. Which is precisely why we can't use placebo to test better vaccines.
Read more: epiellie.substack.com/p/first-do-n...
But we've done these trials. And we know our vaccines work. Which is precisely why we can't use placebo to test better vaccines.
Read more: epiellie.substack.com/p/first-do-n...
May 6, 2025 at 10:22 PM
The anti-vaccine crowd say they just want to “see the evidence” in the form of placebo-controlled randomized trials.
But we've done these trials. And we know our vaccines work. Which is precisely why we can't use placebo to test better vaccines.
Read more: epiellie.substack.com/p/first-do-n...
But we've done these trials. And we know our vaccines work. Which is precisely why we can't use placebo to test better vaccines.
Read more: epiellie.substack.com/p/first-do-n...
Music on some old computer systems: gist.github.com/Sgeo/23c39ed...
Music on old platforms
Music on old platforms. GitHub Gist: instantly share code, notes, and snippets.
gist.github.com
April 23, 2025 at 3:15 AM
Music on some old computer systems: gist.github.com/Sgeo/23c39ed...
I should make a list of old computer platforms that has music and how to listen to it. At least of the ones where there exists some way to do so and that I know of it.
April 22, 2025 at 9:16 PM
I should make a list of old computer platforms that has music and how to listen to it. At least of the ones where there exists some way to do so and that I know of it.