Interesting YouTube videos

[SteveBagley]

Some very familiar imagery in the graphics in this music video

https://youtu.be/p2GtCVW2ZFA

Steve

[Louis.m]

Hi Steve,

Some very familiar imagery in the graphics in this music video

https://youtu.be/p2GtCVW2ZFA

Steve

Thanks for the tip, Pink Floyd is one of my favourite bands and these guys are

[algenon_iii]

Acorn Electron documentary
https://www.youtube.com/watch?v=SrayIPh22Dk

[Louis.m]

https://www.youtube.com/watch?v=pIpm6J3lKLA

[Multiwizard]

https://www.youtube.com/watch?v=pIpm6J3lKLA

Thanks for sharing Louis, interesting video...

[hoglet]

George Foot (gfoot) has made an excellent video on using a cheap FX2 logic analyzer and the 6502 Decoder to debug 6502-based hardware and software. It also touches on profiling as well.

Here's a link to the video: Debugging and Profiling 6502-based Computers.

It gives a really good overview of what these tools can do. The demonstrations in the video use a simple breadboard 6502, but exactly the same techniques can be used for any 6502-based system, including all of the 8-bit Acorn machines.

George's channel is well worth subscribing to; there has been some excellent content there recently.

Dave

[B3_B3_B3]

Gary Kildall - The Man That Should Have Been ...

https://m.youtube.com/watch?v=59D1L7xj8 ... e=youtu.be

[tricky]

Quite technical video series (10 episodes) on implementing/emulating a 6502 in micro code with more things like interrupt handling to follow.
How to build a 6502 TTL-CPU: Part 1

[!FOZ!]

I know these are not all that new (though the author has posted new ones recently) - i just had to share this one!

I am working away from home, and thus away from my Beebs - and this just put a huge smile on my face and got my foot tapping!

Repton at super speed set to very appropriate music! (IMHO)

https://www.youtube.com/watch?v=F0XXQKG ... MM&index=3

[vanekp]

OMG it's 10 hr long

[BigEd]

For those of us living in colder climates and underheated spaces - how to heat the person not the space.
https://www.youtube.com/watch?v=CqJoXyBuxRw

She starts off too cold, and then spends 30 minutes at the heated desk area. At the end of the 30 minutes she is fully warmed up and feels like she could work there indefinitely.

We then turn off the micro heat and see how long she can hold out until she feels too cold to keep working. About three minutes and ten seconds.

Quick summary of micro heaters:
40 watts: incandescent light bulb in a chick brooder configuration
25 watts: heated keyboard
15 watts: dog bed heater / heating pad
2.5 watts: heated mouse

82.5 watts total.

[BigEd]

Watch the electricity from a 9V battery travel down a long wire, in this experiment and visualisation, using some long wires and a fast scope

Whole thing starts with the quiz as to what you expect:
https://youtu.be/2AXv49dDQJw?si=l8bc1zp4QA35pYqh

Cued up to the answer:
https://youtu.be/2AXv49dDQJw?si=l8bc1zp4QA35pYqh&t=593

[garfield]

Tech investigation of the C64 version of the game Exile:

https://www.youtube.com/watch?v=Bh24hlZpgCQ

[Andrew_Waite]

Adrian's Digital Basement. Adrian gets his hands on an Acorn Electron.

https://www.youtube.com/watch?v=sukuk-miq4U

[BigEd]

An hour with Steven Goodwin who wrote 20 GOTO 10
Writing Retro! - Steven Goodwin Tech Talk

hat-tip to hoglet

[paulb]

From the Centre for Computing History, an interview with Ray Anderson discussing Acorn, Torch, IXI, SCO, Bango and many other topics:

"Ray Anderson - How He Built Businesses that Changed the World"

Refreshingly, Torch's Unix workstation period is covered in reasonable detail, although there is discussion of their Z80-based systems and expansions for the BBC Micro. And for those of us who have been digging into computing history, plenty of the details are confirmed in the interview, like the origins of Torch, the availability of Torch's Z80 second processor well before Acorn's own Z80 product. Also, Torch's interactions with Steve Jobs and NeXT get an airing, bringing up tales that probably reinforce many people's impressions of Apple's co-founder.

[paulb]

Trawling the CCH's channel, I found this video:

"Bob Garrett Interview 1985 - British Olivetti Ltd, AT & T, Acorn Computers"

It is from the era and mostly focuses on Olivetti's partnership with AT&T, with Acorn being a topic that can only draw vague responses given that, as Mr Garrett points out, it was the main Olivetti business that had taken control of Acorn, not the British subsidiary. I guess it does touch upon dealer dissatisfaction, which was a bit of an issue generally throughout the era.

[MarkMoxon]

Nice video explaining some of the more interesting technical aspects of BBC Micro Revs.

"Revs: How Geoff Crammond squeezed a Formula 3 sim racer into just 32KB on the BBC Micro"

https://youtu.be/p5s-zbXtDoo

Includes some good visualisations of some of the things I've tried to explain in my deep dives at https://revs.bbcelite.com (looks like my site helped inspire this video, so I may be biased!).

Mark

[algenon_iii]

Part 2 of the electron repair at Adrian's Digital Basement

https://www.youtube.com/watch?v=oMTwV_Jr5K4

[JonnoW]

This is worth a watch just for the opening credits - hilarious!


https://www.youtube.com/watch?v=RRh28A54HF4

[paulb]

Part 2 of the electron repair at Adrian's Digital Basement

https://www.youtube.com/watch?v=oMTwV_Jr5K4

Watching it, particularly the guesswork about loading programs, reminded me of a quip that a former boss once made that "a month in the laboratory can save an afternoon in the library". He was from Canada originally as well!

I don't want to be hard on Adrian, though. Although he could confer with us and save himself some time, he is thorough and his explorations pursue lines of enquiry that most of us would never bother with. His exposition of the cassette circuit is very useful, for instance. And who else would have gone to the effort of getting a Master to output NTSC video? (Or the Electron, to the extent that it does.) There may still be machines from back in the day in remote warehouses or storerooms in the American Southwest or Mexico that were configured in exactly that way.

But the missing diode in his schematic is very much present in the appropriate schematic for an issue 6 board, available in the revised Advanced User Guide and in my KiCad version of the circuit diagram. We could have pointed him to all of that if only he'd asked! Still, it provides a narrative and drives viewer engagement, I suppose.

[BigEd]

A walk around one of JLCPCB's factories, lots of machines, lots of space, not so many people. Quite relaxing - not a hyped-up presenter!
Walking Through a Big PCB Factory in China | JLCPCB 1h12 by RobertFeranec

via discord

[daveejhitchins]

A walk around one of JLCPCB's factories, lots of machines, lots of space, not so many people. Quite relaxing - not a hyped-up presenter!
Walking Through a Big PCB Factory in China | JLCPCB 1h12 by RobertFeranec

via discord

Wow . . . I'm sure I saw one of my boards there The site must be huge - Very impressed . . .

Dave H.

[paulb]

I just finished watching this video:

"Christopher Curry interviewed for Archives of IT by Alan Cane on the 26th April, 2016"

It was only posted last year, though, and the channel has few subscribers. The Oral Histories of IT and Tech has a summary of the interview along with a transcript. There are plenty of other interviews on that site, but maybe it has been discovered before.

The interview brings up a few things I don't think I have seen or heard elsewhere, like his recollection of the cost of making each Electron and the sale price to retailers, various details of the US operation, the "hatchery" at Acorn, the Communicator, and the cancelling of projects as Olivetti asserted itself.

[joachim]

From said transcript of the Curry interview:

By the late 1970s Clive Sinclair could see that a microcomputer had consumer appeal and started development, but it got taken away as an unnecessary expense by the NEB. It was taken away to Newbury Electronics and became the NewBrain, which became the basis for the BBC microcomputer.

I think it needs some more careful copyediting!

[paulb]

From said transcript of the Curry interview:

By the late 1970s Clive Sinclair could see that a microcomputer had consumer appeal and started development, but it got taken away as an unnecessary expense by the NEB. It was taken away to Newbury Electronics and became the NewBrain, which became the basis for the BBC microcomputer.

I think it needs some more careful copyediting!

Well, it wasn't the basis for the eventual Beeb, but it was the basis for the original Beeb. Newbury didn't come through, which resulted in the tendering process and Acorn's selection as the supplier. If you watch the Ray Anderson video I posted recently, you'll learn (if you didn't already know) that Torch was supposed to be the operation that delivered the Z80-based "business" system based on the Beeb, since such a system wasn't Acorn's focus.

[BigEd]

Ah, you had me worried for a bit - I was sure Curry wouldn't have made that mistake. It turns out it's the summary which is over-edited there. The full transcript has

But when the BBC started looking for something, they decided this is, this is
something, this is educational and something that we should be doing, they asked the
DTI what they should about it, and the DTI said, ‘Oh well let’s see, the NEB’s got a
company in Oxford, Newbury rather, go and see them.’ So the original BBC platform
was going to be based on the NewBrain.

It's worth a read!

[davidb]

For those without the time or patience to set it up, here's RISC iX 1.2 1c (ARM) running under Arculator that someone uploaded last year.

[algenon_iii]

Building an Acorn System 3

https://www.youtube.com/watch?v=gB9Ai5bnaWk

[caver2]

https://www.youtube.com/watch?v=3JcUtkCjF-0

Adrian's Digital Basement II channel - opening @Ukwebb package - new OS ROM and SD disk.