Lightnews — Scholar-powered news

Reposted by Gavin Crawford

Paolo Fabio Zaino @paolofabiozaino.bsky.social · 1d

🚀 #Hacktoberfest2025 is here!
Join the #RISC_OS Community on #GitHub, contribute, earn prizes & badges, and help push RISC OS development forward.
Start here 👉 github.com/RISC-OS-Comm...
Or check this one: github.com/pzaino/risc-...
☕️ Have fun & happy hacking! 😍

RISC OS Community

RISC OS users community Open Source projects. RISC OS Community has 34 repositories available. Follow their code on GitHub.

github.com

1 2

Reposted by Gavin Crawford

The Icon Bar @iconbar.com · 2d

The 2025 London Show is less than 3 weeks away...

www.iconbar.com/articles/The...

It's now less than 3 weeks to go until the 2025 London Show!

The 2025 London Show is less than 3 weeks away...

Technology News and Views

www.iconbar.com

4 4

Reposted by Gavin Crawford

Paolo Fabio Zaino @paolofabiozaino.bsky.social · 3d

Only 20 days to the #RISC_OS London Show! And Next @RISCOSitory post about it: www.riscository.com/2025/zfp-sys...

ZFP Systems at the London Show

It's now just three weeks to go until this year's London Show, which takes place at the Harrow District Masonic Centre on 25th October, and the first announceme

www.riscository.com

2 2

Gavin Crawford @givvygavvygoo.bsky.social · 4d

I hear you on that one. I'm the same. A lifetime of staring at monitors.

a cartoon of a man standing next to a scarecrow in front of a trash can with the number 2 on it .

ALT: a cartoon of a man standing next to a scarecrow in front of a trash can with the number 2 on it .

media.tenor.com

1

Gavin Crawford @givvygavvygoo.bsky.social · 4d

Those 'N' give it away. Being a font man, I thought you knew your onions!

a man playing drums with the word travis behind him

ALT: a man playing drums with the word travis behind him

media.tenor.com

1 1

Reposted by Gavin Crawford

The Icon Bar @iconbar.com · 5d

WROCC October 2025 meeting - R-Comp and ROD Show teaser

www.iconbar.com/articles/WRO...

Wakefield's October speaker was Andrew Rawnsley from R-Comp, giving us some updates and teasers for the London Show (in case you need more reasons to attend!)

WROCC October 2025 meeting - R-Comp and ROD Show teaser

Technology News and Views

www.iconbar.com

5 5

Reposted by Gavin Crawford

Paolo Fabio Zaino @paolofabiozaino.bsky.social · 8d

'the hell? it's 4:36am... lol anyway, new UltimaVM PUSH/POP register range fast memory copy is done and there is also a little "twist" POP supports both strick LIFO (like the JVM) and natural order (like the ARM). Had to finish so late, because I had a hell of a busy day at work... Need some sleep!

2 3

Gavin Crawford @givvygavvygoo.bsky.social · 9d

Christ Almighty! I can't believe how many 'urm' times I 'urm' say the word 'urm' throughout the 'urm' video. It's so bloody 'urm' annoying!

According to the youtube auto transcript, I say it 792 times. The talk would have probably only taken 29 minutes with all the urms.

2 1

Gavin Crawford @givvygavvygoo.bsky.social · 9d

I've only added these extra scale values to keep the document file sizes to a minimum while in the design stages. The final document will have all images cropped and optimised to 300dpi.

1 1

Gavin Crawford @givvygavvygoo.bsky.social · 9d

I see. I've not needed to touch the actual scaling functions, so I guess there will probably be a rouding discrepancy, but to be honest, I'm not too worried as at these reductions you end up with a rough pixilated representation. I'd be doing the precise layout at a higher res, nearer full size.

2

Reposted by Gavin Crawford

Paolo Fabio Zaino @paolofabiozaino.bsky.social · 9d

Added #JVM Stack Operations mapping to my #UltimaVM (see link). But I am thinking of adding indirect adressing:

PUSH.U64 [r0-r1] Push mem val from addr in r0 to addr in r1
PUSH.F32 [r0] Push val at mem addr in r0

tinyurl.com/JVMToUltimaVM
#bytecode #VirtualMachine #Coding #Programming #VM #RISC_OS

Ultima VM – Unified, Lightweight, Typed Instructions MAchine bytecode interpreter

Ultima is an efficient bytecode interpreter virtual machine (VM) designed for Application Virtualization and to improve software engineers’ development experience and optimize bytecode execut…

tinyurl.com

1 4

Reposted by Gavin Crawford

RISC OS London @rougol.bsky.social · 9d

For those who missed it, Gavin's excellent talk can now be watched here youtu.be/NmZSXjij7x4

1 6 7

Reposted by Gavin Crawford

RISC OS London @rougol.bsky.social · 9d

The RISC OS London Show is now just under four weeks away! Preview from RISCOSitory - www.riscository.com/2025/london-...

London Show 2025 - just four weeks to go

Today is Saturday, 27th September, 2025, and I've scheduled this post to appear at 11:00am - which means at the time this article appears it will be precisely f

www.riscository.com

6 6

Gavin Crawford @givvygavvygoo.bsky.social · 10d

The proxy images are only used as an on-screen low res placeholder, so the full-sized image doesn't need to be in memory (or the document file) when referenced. The full-sized image is only brought back into memory when the document is printed. Wouldn't fit many full-sized pics in memory.

1

Gavin Crawford @givvygavvygoo.bsky.social · 10d

The actual scaling code is what OPro normally does - I've not touched that. I've just added in a few extra icons that set the proxy scaling factor beyond what was initially available in the interface. The fact that OPro just recognised the new value was a bonus in that I didn't have to mess too much

1

Gavin Crawford @givvygavvygoo.bsky.social · 10d

To be honest, I don't understand the question (sorry, it's not obvious to me)

5464 does divide by 8 (683), as does the 8192 value, so you'll have to explain it to me.

Just pretend for a moment that you're dealing with someone who's a bit stupid - <whispers>which I am</whispers>

a man with a very short haircut is laughing while sitting in a car

ALT: a man with a very short haircut is laughing while sitting in a car

media.tenor.com

1

Gavin Crawford @givvygavvygoo.bsky.social · 10d

My new camera is 45Mpix, gives 13-15MB JPEGs (128MB uncomp Sprites) and a size of 8192 x 5464 pixels, using the smallest Base/8 proxy at 16bpp takes 1.33M. That goes down to 85K with Base/32, and to 21K using Base/64.

1 1

Gavin Crawford @givvygavvygoo.bsky.social · 10d

I've been working on Ovation Pro to add extra scaling options to the picture proxy setting. For those who attended my @rougol.bsky.social talk, I explained the use of proxy images. Base/16, Base/32 & Base/64 now offer even smaller proxies, making for smaller document sizes.
#OvationPro #RISC_OS #DTP

2 6 8

Reposted by Gavin Crawford

Paolo Fabio Zaino @paolofabiozaino.bsky.social · 12d

In a recent thread on here folks were talking about how useless is #RISC_OS Apps facility. Guys, let me remind that is a thing of the past. We have !Launchpad by years now that fully replace Acorn Apps (even on the old Archimedes) and gives all RO systems same features as macOS and Win 11 Launchpads

RISC OS !Launchpad is a modern and fully features Apps launcher for RISC OS which offers also internet search facility and a ton of utilities included easy file close, turn hourgass off etc. to make RISC OS experience easy and pleasurable for all users.

RISC OS Launchpad is also fully theamable and even supports multiple icons layout and yes you can even configure icons size and distance! Do that on a mac!

RISC OS Launchpad comes with many utilities (and more are coming) to make RISC OS experience easy. And did I mention it fully support Dark mode already? ;)

2 3 6

Gavin Crawford @givvygavvygoo.bsky.social · 12d

I don't believe it at all. No job for a mechanic is a 2 minute fix. Even filling the washer bottle takes 5, and then they'll charge you for 15 minutes.

1 3

Reposted by Gavin Crawford

The Icon Bar @iconbar.com · 12d

September 2025 News Summary

www.iconbar.com/articles/Sep...

Some things we noticed this month. What did you see?

September 2025 News Summary

Technology News and Views

www.iconbar.com

3 4

Reposted by Gavin Crawford

Colin Hoad @colinhoad.com · 14d

The London RISC OS Show will return on 25th October! @rougol.bsky.social
youtu.be/dAFZTS3xxTc?...

RISC OS London Show 2025

YouTube video by AMCOG

youtu.be

4 5

Reposted by Gavin Crawford

VinceMH @vincemh.bsky.social · 14d

The #RISC_OS #London Show is creeping closer - 25th October.

Preview vid courtesy of Tony Bartram/Amcog Games

www.youtube.com/watch?v=dAFZ...

RISC OS London Show 2025

YouTube video by AMCOG

www.youtube.com

4 6

Reposted by Gavin Crawford

armbytes.bsky.social @armbytes.bsky.social · 14d

Without an ARM, there'd be no RISC OS! Modular, compact and quick. #Retro #AcornComputers #OpenSource #RISCOS #London #Show #October
arstechnica.com/gadgets/2022...

A history of ARM, part 1: Building the first chip

In 1983, Acorn Computers needed a CPU. So 10 people built one.

arstechnica.com

1 2 5

Reposted by Gavin Crawford

RISC OS London @rougol.bsky.social · 16d

For anyone wondering why no online meet up next month, it's because there's a physical show going on instead! Saturday 25th October, Harrow, NW London
www.riscoslondonshow.co.uk

4 4