@armbytes.bsky.social
Tinkerer. I have bucketloads of admiration for the scientists, engineers, innovators, developers, authors and artists who make fun stuff happen. http://acm.org
nemoBasic featuring a parametric address for CALL that glosses the TYPE of code that is to be called, allowing the interpreter to avoid calling obviously incompatible machine instructions
BBC Basic is available for multiple platforms and processors, but there’s one keyword (well, two) that’s definitely not portable – CALL.
I decided to address that (ha!) in nemoBasic:
A review of the Springboard card - Personal Computer World, January 1988.
chrisacorns.computinghistory.org.uk/docs/Mags/PC...
Acorn A5000 Alpha. 37.5MHz ARM clock, 16.67MHz (60ns) RAM clock... 31799 SICK 1.28 Dhrystones/sec... wild.
This is nipping at the heels of an ARM610 RISC PC.
https://stardot.org.uk/forums/viewtopic.php?p=468630#p468630
#riscos #acornrisc #AcornComputers #retrocomputing
Archive Edition 27:6 reviewed
www.iconbar.com/articles/Arc...
Archive Magazine 27:6 arrived this week, just in time to the London Show. After a quiet summer, it kicks off what looks like a busy Autumn.
It's been a satisfying evening... thanks, @archiveriscos.bsky.social
27.10.2025 20:51 — 👍 9 🔁 5 💬 0 📌 0
The Acorn Springboard, an ARM co-processor upgrade for the IBM PC in the form of an ISA card. I don't think many of these were actually produced and are certainly rarer than the ARM Evaluation System Second Processors which attach to a BBC Micro. Does anyone have one of these or ever used one?
27.10.2025 20:11 — 👍 47 🔁 6 💬 7 📌 0
Happy @archiveriscos.bsky.social day!
27.10.2025 17:47 — 👍 9 🔁 5 💬 0 📌 0Chords
vec3 p;for(float d,i,z;i++<5e1;o+=(cos(i/9.+vec4(2,1,0,0))+1.)/d/z)
p=z*normalize(FC.rgb*2.-r.xyy),p.z-=t,d=abs(.01*z-.1),z+=d=max(d,.5*length(vec2(3.-abs(p.y)+dot(cos(p+.3*t),sin(.3*t-.6*p.yzx)),cos(p/.3-p.z)*.3))-d);
o=tanh(o/8e1);
Playing high level with satellite and smart bombs.
Change colour interrupt and see where joystick firing bases are mapped to on screen.
Require a second coin entered to play a game.
Service menu showing options that can be changed.
Play testing Atari Missile Command for release shortly on the Acorn Electron +16k of sideways RAM. Using Plus 1 Mini for joystick option with a repo Atari 2600 joystick.
Starting level 4 within the service menu. All options supported including languages.
www.ramtop-retro.uk/Plus-1-Mini....
Repton 3 Redux Final sneak peek coming next year.
Features:- integrated editor, attract/demo mode, high score, collect earth for points, cracked eggs behave like rocks, freeze spirits/monsters enable quick getaway, different screen walls including last level mirror.
Electron version video.
Now I just need to find a copy of Flight Simulator Toolkit for the Acorn Archimedes and I've got the full set. #retrocomputing #riscos #AcornComputers
25.10.2025 23:08 — 👍 8 🔁 3 💬 0 📌 0
RISC OS London Show Report 2025
www.iconbar.com/articles/RIS...
The 2025 London Show took place in its new regular venue.
Overall there was a real buzz and plenty of people attending.
Here is what I saw on the floor.
RISC OS London Show 2025 - pictures
www.iconbar.com/articles/RIS...
Here is a selection of pictures to show you what the event was like
RISC OS London Show 2025 - Notes from the talks
www.iconbar.com/articles/RIS...
Here are my notes from the talks. As usual, any mistakes or omissions are mine.
My spidey sense was right about waiting to order the RISC OS developer tools. They just released a new version yesterday. I placed my upgrade order so I should be getting a USB stick in the mail with the DDE in a week or two. Bug fixes and a new Fortran compiler. www.riscosopen.org/content/sale...
25.10.2025 05:58 — 👍 8 🔁 2 💬 1 📌 0RISC OS Developments will be at the London Show with the full public release of the Iris web browser, plus updated network and WiFi stack. More info here - www.riscosopen.org/forum/forums...
24.10.2025 19:29 — 👍 5 🔁 4 💬 0 📌 0The RISC OS London Show opens tomorrow morning at 11am. For news of the latest products being released and special offers, see the @riscosopen.bsky.social forum
www.riscosopen.org/forum/forums/1
#riscoslondonshow2025
Show offer on Impression User Manual and free software to collect
www.iconbar.com/articles/Sho...
If you don't have a copy of the Impression User manual and would like a printed copy, Chris Hall has a very special offer for you at the London Show.
Bit niche, but want to know how ARM1&2 got an ANSI C compiler back in the 1980s? Listen to Arthur Norman and Lee Smith... www.youtube.com/watch?v=hwUo...
23.10.2025 19:34 — 👍 2 🔁 2 💬 1 📌 0
ARM3 processor, soldered to an A5000 motherboard. A pin half way up the side closest the camera has been repaired by carving out part of the IC package with a diamond grinder and attaching a hair-thin wire.
This isn't a repair one should consider doing lightly. But sometimes there's no alternative. #retrocomputing #electronics #acornarchimedes #AcornComputers
23.10.2025 17:44 — 👍 8 🔁 5 💬 2 📌 0
London is closer than you think!
www.riscosopen.org/news/article...
a sketch of an anthropomorphic squirrel leaning against a table and caressing the monitor of an old computer. His shirt is undone and his tie is flopped over the computer, implying a rowdy night. Text in the corners reads, "I go nuts for it. You will, too. Acorn Computers."
A line drawing of a cartoon squirrel leaning against a computer. There are several acorns scattered on the floor around them. Text at the top reads, "With 16MB of memory, I can store more than ever! Acorn Computers."
my approach to being a drawer: put a rodent on it
19.10.2025 10:13 — 👍 359 🔁 106 💬 7 📌 1
PhotoDesk 3.25 released
www.iconbar.com/articles/Pho...
It has clearly been a very busy few months at R-Comp... And they have found time to squeeze in a new version of PhotoDesk.
Acorn BBC Micro Model B
Acorn BBC Micro Model B
22.10.2025 22:16 — 👍 36 🔁 4 💬 1 📌 0
Don't mind me. Just running Windows - inside Acorn RISC OS - inside macOS.
Why? Why not.
October 2025 Rougol report - RISCOSbits show plans
www.iconbar.com/articles/Oct...
The October 2025 talk featured RISCOSbits supremo Andy Marks giving us a bit of a preview of their stall for Saturday's Show.
THIS SATURDAY! The RISC OS London Show is back, showcasing the latest products and projects, and providing a chance to meet up, chat, and attend talks about our favourite little OS. #opensource #acorn #raspberrypi www.riscoslondonshow.co.uk
21.10.2025 08:50 — 👍 9 🔁 7 💬 0 📌 0The RISC OS London Show is only a few days away, on Saturday 25th October. Chat to exhibitors old and new, and listen to the latest news in our theatre talks. All the details on the show website www.riscoslondonshow.co.uk/index.php
21.10.2025 17:27 — 👍 2 🔁 2 💬 0 📌 0
Fireworkz Pro 2 version 2.33.00 released
www.iconbar.com/articles/Fir...
R-Comp has released a free update for Fireworkz Pro.
In the new issue of Archive Magazine, we sit down with none other than Hermann Hauser, the co-founder of Acorn Computers, for an exclusive interview. It's not too late to subscribe! www.archivemag.co.uk
20.10.2025 11:33 — 👍 7 🔁 5 💬 0 📌 0
