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John Newcombe

@glasstty.com

TELSTAR viewdata service, KIM-1, OSI, Gemini, System 3 computers oh... and a YouTube channel, http://youtube.com/glasstty. No games here!

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30.09.2023
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Latest posts by John Newcombe @glasstty.com

RetroFest 2026 - The Unofficial Advert
RetroFest 2026 - The Unofficial Advert YouTube video by GlassTTY

youtu.be/DScdsdFIP_A?...

RetroFest 2026 - The Unofficial Advert

12.02.2026 21:45 πŸ‘ 6 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1

The veneer was pretty easy to do even on the corners. My original Horizon case was 19mm thick. The new one was built with 18mm ply, so with the veneer, ended up very similar. I think some Horizon cases were made of thinner ply though.

04.02.2026 21:34 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The North Star Horizon - It's Finger Lickin' Good!
The North Star Horizon - It's Finger Lickin' Good! YouTube video by GlassTTY

I finally got around to putting a video together for the North Star Horizon. youtu.be/gFO5XHTvKG8?...

04.02.2026 20:34 πŸ‘ 13 πŸ” 2 πŸ’¬ 2 πŸ“Œ 1

The sad thing is that the tuning is so critical that I had to tune the RTTY unit using FLDigi and the SDR. :(

27.08.2025 17:27 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Recreating a 1980s weather receiving station.

27.08.2025 15:40 πŸ‘ 31 πŸ” 5 πŸ’¬ 3 πŸ“Œ 1

Can't wait to see the video! We tidied up specially and everything πŸ˜„

30.06.2025 10:52 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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A massive thank you to @petescircuit.bsky.social and @loudscotsbloke.bsky.social for their generosity in supplying the missing components for my now working ZX80.

24.06.2025 15:17 πŸ‘ 24 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0
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If you are interested in trying out an Acorn System 1, but don't have deep enough pockets for an original, then you could try out a 'System 1 Trainer' by Chris Oddy. He also does replica boards for the Acorn Atom amongst other things!

29.04.2025 13:07 πŸ‘ 39 πŸ” 7 πŸ’¬ 2 πŸ“Œ 1

That's brilliant. Well done!

14.06.2025 07:24 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Day 159 - #retrorandom - It was a happy day in 2020 when I eventually got one of the most stylish little computers ever made - the Alice 90. What does it have 90 of? No one is sure. Not kilobytes of memory, that's for sure (it has 32). But who's going to nitpick when you're this gorgeous?

08.06.2025 19:44 πŸ‘ 27 πŸ” 3 πŸ’¬ 4 πŸ“Œ 0

Thanks Tim, appreciated.

08.06.2025 07:28 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The Museum of Computing would like to thank @shortcircuit.org.uk for organising the amazing RetroFest event in our home town of Swindon. It was a pleasure to collaborate with them and we met so many wonderful visitors and exhibitors. We look forward to supporting next year's event!

01.06.2025 19:25 πŸ‘ 24 πŸ” 6 πŸ’¬ 2 πŸ“Œ 0
OSI Superboard II and the UK101
OSI Superboard II and the UK101 YouTube video by GlassTTY

Just in case you like Pirate stories...

youtu.be/93XWZeG5VDw

07.06.2025 19:45 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 2
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Do you need some teletext advertising? πŸ˜„

24.05.2025 23:40 πŸ‘ 9 πŸ” 4 πŸ’¬ 1 πŸ“Œ 1
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25.05.2025 16:07 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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25.05.2025 16:06 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Page 808 on Telstar!

25.05.2025 16:04 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Perfect!

25.05.2025 11:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

...I never got round to looking at the bug but it's to do with screen wrapping so I suspect it will have no impact on Elite. It would be a rare thing to have a version that Roy (@loudscotsbloke.bsky.social) doesn't have.

25.05.2025 11:39 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Mame has a minor bug in the display which I noticed when I wrote the Prestel software last year, otherwise it's a good emulation. I even have a real system you can test it on...

25.05.2025 11:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

You're welcome, anything else you want to know, just ask.πŸ™‚

25.05.2025 10:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The System 3 has the Teletext video card so all you need to do is port the Mode 7 version. Only a couple of hours work surely 😁.

25.05.2025 10:51 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I'll be there with as much Prestel junk as I can fit in a reasonably priced hatchback along with some of my favourite badges.

25.05.2025 10:48 πŸ‘ 7 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

I'll be there both days! I'm really looking forward to catching up in MR (Meat Reality) with a huge bunch of amazing people. I'll be there with a bunch of other YouTube people representing the Big Red Arrow club.

24.05.2025 18:26 πŸ‘ 14 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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Time for an embarrassing plug! If you would like some digital downloads for your Aquarius then please check out loudscotsbloke.itch.io If you would like a physical copy of my games, on cassette (yes! tape!), then please head over to Cronosoft cronosoft.fwscart.com/browse/cat53... #mattelaquarius

23.05.2025 20:51 πŸ‘ 9 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
The RetroFest 2025 logo, with the following text over a dark green tinted image of two Commodore Pet computers.
RetroFest 2025
A celebration of retro computers

The RetroFest 2025 logo, with the following text over a dark green tinted image of two Commodore Pet computers. RetroFest 2025 A celebration of retro computers

Weekend to myself. Mrs B is off to Lisbon to visit daughter. Going to do my soak testing and packing for RetroFest. Then a short week - bank holiday for those of us in the UK on Monday, and then I'm off on Friday so that I can take my time loading up and travelling down to Swindon.

retrofest.uk

23.05.2025 16:06 πŸ‘ 31 πŸ” 4 πŸ’¬ 4 πŸ“Œ 0

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Perhaps spending all afternoon trying to get sigrok to recognise my saleae clone analyser isn’t the best use of time. It’s interesting that all variants fail with the same error though.

24.05.2025 16:59 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

I am completely calm about this. So calm. Very calm indeed. Not panicking at all.

24.05.2025 16:48 πŸ‘ 8 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

This is awesome. Any chance I could have the source to pop on Telstar for the event?

25.05.2025 08:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I can't wait for the System 3 version :).

25.05.2025 08:02 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0