0xC0DE
@0xc0de.bsky.social
Acorn Electron fanboy | 6502 coder
https://0xc0de6502.github.io
https://0xc0de6502.github.io
Pinned
0xC0DE
@0xc0de.bsky.social
· Dec 15
I finally got around to creating a simple static website with most of my free games and tools. Play my games online by clicking on the game's image, or visit the corresponding GitHub page. It also lists most of the places you may find me online 😎 0xc0de6502.github.io
Reposted by 0xC0DE
I am delighted to announce the release of my latest project:
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
GitHub - markmoxon/the-sentinel-source-code-bbc-micro: Fully documented and annotated source code for The Sentinel on the BBC Micro
Fully documented and annotated source code for The Sentinel on the BBC Micro - markmoxon/the-sentinel-source-code-bbc-micro
github.com
January 2, 2026 at 4:29 PM
I am delighted to announce the release of my latest project:
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
Fully documented source code for The Sentinel, Geoff Crammond’s 1986 masterpiece.
Here’s the repository; deep dives coming soon.
See thread for details.
1/9
github.com/markmoxon/th...
#retrocomputing #retrogaming #bbcmicro #c64 #8bit
Happy new retro year! This is going to be good fun for today
January 1, 2026 at 11:38 AM
Happy new retro year! This is going to be good fun for today
Reposted by 0xC0DE
For the first time the Plus 1 Mini expansion unit for the Acorn Electron is available through Tindie! To celebrate, there's 5% off everything in my Tindie store until the 22nd using code RAMTOP5.
www.tindie.com/products/408...
www.tindie.com/products/408...
Plus 1 Mini Expansion For Acorn Electron by Ramtop Retro on Tindie
Plus 1 Mini Expansion for Acorn Electron
www.tindie.com
December 14, 2025 at 3:51 PM
For the first time the Plus 1 Mini expansion unit for the Acorn Electron is available through Tindie! To celebrate, there's 5% off everything in my Tindie store until the 22nd using code RAMTOP5.
www.tindie.com/products/408...
www.tindie.com/products/408...
Reposted by 0xC0DE
Ok, this is about as complete as it will get 😊 Here's a preview... I'll tidy up a few things (maybe change the music) and post on Stardot. 🔊
December 14, 2025 at 3:12 PM
Ok, this is about as complete as it will get 😊 Here's a preview... I'll tidy up a few things (maybe change the music) and post on Stardot. 🔊
Reposted by 0xC0DE
It's a bit early maybe, but Season's Greetings !
Many thanks for @0xc0de.bsky.social
for the initial inspiration 😎
See the full video here: 😅
youtu.be/4hB7hUAY6p0
Now, back to Chuckulus ! 🙄
Many thanks for @0xc0de.bsky.social
for the initial inspiration 😎
See the full video here: 😅
youtu.be/4hB7hUAY6p0
Now, back to Chuckulus ! 🙄
December 12, 2025 at 11:05 AM
It's a bit early maybe, but Season's Greetings !
Many thanks for @0xc0de.bsky.social
for the initial inspiration 😎
See the full video here: 😅
youtu.be/4hB7hUAY6p0
Now, back to Chuckulus ! 🙄
Many thanks for @0xc0de.bsky.social
for the initial inspiration 😎
See the full video here: 😅
youtu.be/4hB7hUAY6p0
Now, back to Chuckulus ! 🙄
Now with a little more colour and nice chunky pixels! #acornelectron
December 8, 2025 at 7:03 PM
Now with a little more colour and nice chunky pixels! #acornelectron
Infinite amount of sand? Sure, let's go! #acornelectron
December 7, 2025 at 10:15 PM
Infinite amount of sand? Sure, let's go! #acornelectron
More sand, infinite stream, can't stop playing with this 😎
December 7, 2025 at 2:45 PM
More sand, infinite stream, can't stop playing with this 😎
On to the next experiment with physics simulation on my Acorn Electron, creatively named Sand!
December 6, 2025 at 10:19 PM
On to the next experiment with physics simulation on my Acorn Electron, creatively named Sand!
Couldn't help myself... my name fits exactly in those 36 bouncing balls 😎
December 6, 2025 at 12:05 PM
Couldn't help myself... my name fits exactly in those 36 bouncing balls 😎
Pushed my Acorn Electron a little further from 27 to 36 bouncing balls (9x9 pixels each, 50fps flicker-free, MODE4) 🤓
December 5, 2025 at 4:22 PM
Pushed my Acorn Electron a little further from 27 to 36 bouncing balls (9x9 pixels each, 50fps flicker-free, MODE4) 🤓
There is something very pleasing about arranging 6502 math code in such a way that most CLC/SEC instructions become unnecessary because the value of the carry flag is known in every possible execution path. It is also an excellent way to shoot yourself in the foot! 🤣
December 4, 2025 at 12:52 PM
There is something very pleasing about arranging 6502 math code in such a way that most CLC/SEC instructions become unnecessary because the value of the carry flag is known in every possible execution path. It is also an excellent way to shoot yourself in the foot! 🤣
26
I can push this to 25 flicker-free bouncing balls (9x9 pixels each) at 50fps in MODE4 on an unexpanded Acorn Electron 😎 Can you do better? Might be fun to do much smaller balls/particles next... 🧐
December 3, 2025 at 10:50 AM
26
I can push this to 25 flicker-free bouncing balls (9x9 pixels each) at 50fps in MODE4 on an unexpanded Acorn Electron 😎 Can you do better? Might be fun to do much smaller balls/particles next... 🧐
December 2, 2025 at 6:29 PM
I can push this to 25 flicker-free bouncing balls (9x9 pixels each) at 50fps in MODE4 on an unexpanded Acorn Electron 😎 Can you do better? Might be fun to do much smaller balls/particles next... 🧐
Double the fun with double screen buffers, flicker-free 50fps #acornelectron
December 1, 2025 at 10:08 PM
Double the fun with double screen buffers, flicker-free 50fps #acornelectron
Always enjoy a little physics simulation, especially having stuff bounce around randomly, very mesmerising 😎 #acornelectron
November 30, 2025 at 9:40 PM
Always enjoy a little physics simulation, especially having stuff bounce around randomly, very mesmerising 😎 #acornelectron
* BLACK FRIDAY DEAL * 100% discount on all of my games and tools 0xc0de6502.github.io 😉
0xC0DE
Games, demos, tools and other projects by 0xC0DE
0xc0de6502.github.io
November 28, 2025 at 11:55 AM
* BLACK FRIDAY DEAL * 100% discount on all of my games and tools 0xc0de6502.github.io 😉
Reposted by 0xC0DE
From tiny acorns… The Acorn Atom Story
YouTube video by Little Car
youtu.be
November 22, 2025 at 12:08 AM
Reposted by 0xC0DE
For fun I created a CRACKME for the Acorn Electron. With some neat tricks, like traps for all known emulators. The idea/challenge is to try to crack the protection code on a real Electron, using no modern tools. Unfortunately, while playing the hacker myself, I managed to crack it pretty quickly 🤣
November 16, 2025 at 8:11 PM
For fun I created a CRACKME for the Acorn Electron. With some neat tricks, like traps for all known emulators. The idea/challenge is to try to crack the protection code on a real Electron, using no modern tools. Unfortunately, while playing the hacker myself, I managed to crack it pretty quickly 🤣
Another great conversion of a classic game to the Acorn Electron! Very polished, well done!
Atari Missile Command for the Acorn Electron
Is now available on Stardot, please follow the link, log in, read the post, download the file(s) and get playing.
www.stardot.org.uk/forums/viewt...
Is now available on Stardot, please follow the link, log in, read the post, download the file(s) and get playing.
www.stardot.org.uk/forums/viewt...
November 16, 2025 at 10:25 AM
Another great conversion of a classic game to the Acorn Electron! Very polished, well done!
Disassembly (+ comments) of tape protection of Repton (Acorn Electron). Interesting protection measures. Hidden data in tape block headers is my favourite trick github.com/0xC0DE6502/t...
November 2, 2025 at 4:36 PM
Disassembly (+ comments) of tape protection of Repton (Acorn Electron). Interesting protection measures. Hidden data in tape block headers is my favourite trick github.com/0xC0DE6502/t...
I'm sure this has been done before, but I'm having fun disassembling the layers of protection code in Repton for the Acorn Electron. I may publish a commented disassembly later. There is fake code, many undocumented NOPs, hidden BRK handler, decryption, hidden data in tape header blocks, and more
November 1, 2025 at 11:21 AM
I'm sure this has been done before, but I'm having fun disassembling the layers of protection code in Repton for the Acorn Electron. I may publish a commented disassembly later. There is fake code, many undocumented NOPs, hidden BRK handler, decryption, hidden data in tape header blocks, and more
Revisiting one of my older demos for the Acorn Electron. Creatively called "MODE2 Demo". Fixed an issue that made it glitch every so often. Runs flawlessly in Electroniq (and on a real Electron of course). If someone says the Elk is slow and lacking colours, show them this 😎
October 26, 2025 at 2:15 PM
Revisiting one of my older demos for the Acorn Electron. Creatively called "MODE2 Demo". Fixed an issue that made it glitch every so often. Runs flawlessly in Electroniq (and on a real Electron of course). If someone says the Elk is slow and lacking colours, show them this 😎
While coding Electroniq (Acorn Electron emulator) I got into the habit of writing down ideas, research, tech info, etc etc in a simple notes.txt file. This is now a 4300+ lines document and I'm very happy with it, considering my degrading memory and sparse comments in my source code 🤣
October 25, 2025 at 4:24 PM
While coding Electroniq (Acorn Electron emulator) I got into the habit of writing down ideas, research, tech info, etc etc in a simple notes.txt file. This is now a 4300+ lines document and I'm very happy with it, considering my degrading memory and sparse comments in my source code 🤣