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
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 🤣
From tape protection rabbithole to disk protection rabbithole. This Acornsoft "Plus 3 Games" disc (stairwaytohell.com/electron/adf...) appears to contain only 2 small files, but upon boot you can still play 3 different games! The code in the !BOOT file is no match for modern emulators though 1/2
October 25, 2025 at 3:04 PM
From tape protection rabbithole to disk protection rabbithole. This Acornsoft "Plus 3 Games" disc (stairwaytohell.com/electron/adf...) appears to contain only 2 small files, but upon boot you can still play 3 different games! The code in the !BOOT file is no match for modern emulators though 1/2
My custom tape loaders now confirmed working on a real Acorn Electron, including some lost bytes due to crippled MODE 1 🤣 I had trouble connecting my laptop (playuef, audacity) to my Electron, until I bought a cheap usb audio device aka "external soundcard". Loading/saving data works perfectly 😎
And here's a Speccy-inspired custom tape loader for the Acorn Electron (MODE 1, one continuous data stream)
October 22, 2025 at 6:00 PM
My custom tape loaders now confirmed working on a real Acorn Electron, including some lost bytes due to crippled MODE 1 🤣 I had trouble connecting my laptop (playuef, audacity) to my Electron, until I bought a cheap usb audio device aka "external soundcard". Loading/saving data works perfectly 😎
Anyone who has (or can make!) *original format* tape images (HQ UEF, WAV, etc) of Acorn Electron games that have tape protection and/or custom tape loaders, please get in touch 😎
Examples of games I am looking for in next post...
Examples of games I am looking for in next post...
October 21, 2025 at 1:19 PM
Anyone who has (or can make!) *original format* tape images (HQ UEF, WAV, etc) of Acorn Electron games that have tape protection and/or custom tape loaders, please get in touch 😎
Examples of games I am looking for in next post...
Examples of games I am looking for in next post...
I was curious how game devs made custom tape loaders back in the day. Here is my disassembly (+comments) of the tape loader of Way of the Exploding Fist (Acorn Electron). It loads "encrypted" continuous streams, which are still made up of blocks so you can rewind & retry github.com/0xC0DE6502/c...
October 19, 2025 at 5:31 PM
I was curious how game devs made custom tape loaders back in the day. Here is my disassembly (+comments) of the tape loader of Way of the Exploding Fist (Acorn Electron). It loads "encrypted" continuous streams, which are still made up of blocks so you can rewind & retry github.com/0xC0DE6502/c...
And here's a Speccy-inspired custom tape loader for the Acorn Electron (MODE 1, one continuous data stream)
October 15, 2025 at 10:32 PM
And here's a Speccy-inspired custom tape loader for the Acorn Electron (MODE 1, one continuous data stream)
I got sidetracked by custom tape loaders on the Acorn Electron and decided to try creating a few of my own. Here's one that loads a continuous data stream to the screen (MODE 0), scanline by scanline. Beware, this is the perfect world of emulators and must really be tested on actual hardware!
October 15, 2025 at 3:22 PM
I got sidetracked by custom tape loaders on the Acorn Electron and decided to try creating a few of my own. Here's one that loads a continuous data stream to the screen (MODE 0), scanline by scanline. Beware, this is the perfect world of emulators and must really be tested on actual hardware!
[email protected] it was decided on X that the Elk game 'The Hacker' would really benefit from your Blagger treatment 😉 (but not before you release Chuckulus of course!)
October 11, 2025 at 7:50 PM
[email protected] it was decided on X that the Elk game 'The Hacker' would really benefit from your Blagger treatment 😉 (but not before you release Chuckulus of course!)
This looks awesome! Do we need something like this for the Acorn Electron? 🤔
October 11, 2025 at 8:25 AM
This looks awesome! Do we need something like this for the Acorn Electron? 🤔
Electroniq now supports importing text files (e.g. BBC BASIC programs) via "turbo pasting". It also supports exporting BBC BASIC programs to text files, for easy editing in your favourite editor.
Try it at 0xc0de6502.github.io/electroniq/
Try it at 0xc0de6502.github.io/electroniq/
October 9, 2025 at 9:11 PM
Electroniq now supports importing text files (e.g. BBC BASIC programs) via "turbo pasting". It also supports exporting BBC BASIC programs to text files, for easy editing in your favourite editor.
Try it at 0xc0de6502.github.io/electroniq/
Try it at 0xc0de6502.github.io/electroniq/
I want my Acorn Electron emulator Electroniq to be able to import/export BBC BASIC programs in regular text format. However, tokenising BBC BASIC is not exactly a trivial task. So I am experimenting with this alternative method: turbo paste! This is working remarkably well, even for large programs 😎
September 30, 2025 at 10:56 PM
I want my Acorn Electron emulator Electroniq to be able to import/export BBC BASIC programs in regular text format. However, tokenising BBC BASIC is not exactly a trivial task. So I am experimenting with this alternative method: turbo paste! This is working remarkably well, even for large programs 😎
Pong Wars simulation for Acorn Electron and BBC Micro/Master. This fun little project was inspired by pong-wars.koenvangilst.nl. After coding a prototype in BBC BASIC, I created this 6502 asm version. I hope you enjoy! github.com/0xC0DE6502/p...
September 28, 2025 at 6:44 PM
Pong Wars simulation for Acorn Electron and BBC Micro/Master. This fun little project was inspired by pong-wars.koenvangilst.nl. After coding a prototype in BBC BASIC, I created this 6502 asm version. I hope you enjoy! github.com/0xC0DE6502/p...
With the libretro core version of Electroniq, I can finally easily load and play Acorn Electron games on my Android device (via RetroArch) using the touchscreen! 😎
September 17, 2025 at 11:03 AM
With the libretro core version of Electroniq, I can finally easily load and play Acorn Electron games on my Android device (via RetroArch) using the touchscreen! 😎
I think I'm going to have some fun with this! Many thanks to rax (x.com/oric_rax)
September 15, 2025 at 9:03 PM
I think I'm going to have some fun with this! Many thanks to rax (x.com/oric_rax)
So now I have 3 separate 64bit libretro (RetroArch) core versions of Electroniq, running all at once on Windows 11 in this video. Windows core on the left, Linux core (via WSL2) topright, and Android core (via BlueStacks) bottomright. Investigating touchscreen input on Android version now...
September 6, 2025 at 3:25 PM
So now I have 3 separate 64bit libretro (RetroArch) core versions of Electroniq, running all at once on Windows 11 in this video. Windows core on the left, Linux core (via WSL2) topright, and Android core (via BlueStacks) bottomright. Investigating touchscreen input on Android version now...
Reposted by 0xC0DE
While Commodore just got revived, Microsoft released the source code for Microsoft BASIC as used in the Commodore PET and others under the MIT open source license! opensource.microsoft.com/blog/2025/09...
#8bit #mos6502 @wearecommodore.bsky.social
#8bit #mos6502 @wearecommodore.bsky.social
Microsoft Releases Historic 6502 BASIC - Microsoft Open Source Blog
Explore the original 6502 BASIC—now open source! Dive into retro code, history, and emulators. Fork it, run it, and relive computing's roots.
opensource.microsoft.com
September 3, 2025 at 7:33 PM
While Commodore just got revived, Microsoft released the source code for Microsoft BASIC as used in the Commodore PET and others under the MIT open source license! opensource.microsoft.com/blog/2025/09...
#8bit #mos6502 @wearecommodore.bsky.social
#8bit #mos6502 @wearecommodore.bsky.social
Getting keyboard and audio working in the amd64 libretro core version of Electroniq went smoother than expected. Here is Flappy Bird in RetroArch with the Mega Bezel Amber shader 😎
August 31, 2025 at 6:39 PM
Getting keyboard and audio working in the amd64 libretro core version of Electroniq went smoother than expected. Here is Flappy Bird in RetroArch with the Mega Bezel Amber shader 😎
Very first result with compiling Electroniq (Acorn Electron emulator) as a libretro core for e.g. RetroArch. This opens up possibilities such as using many cool shaders, like this CRT effect. Next up: keyboard input and sound output 👾🕹️
August 29, 2025 at 8:54 PM
Very first result with compiling Electroniq (Acorn Electron emulator) as a libretro core for e.g. RetroArch. This opens up possibilities such as using many cool shaders, like this CRT effect. Next up: keyboard input and sound output 👾🕹️
Well done Chris!
It's now ready to try for yourself! Check out my (free) online retro programming development environment in your web browser 🥳
retrogamecoders.com/bbc-cc65-c64...
retrogamecoders.com/bbc-cc65-c64...
Online Retro Programming IDE: BBC CC65, C64 BASIC and Vic 20 Added!
RetroGameCoders IDE is an online development environment for retro programming, bringing 8-bit game development to your modern web browser
retrogamecoders.com
August 25, 2025 at 1:24 PM
Well done Chris!
Reposted by 0xC0DE
I'm pleased to announce the #Elite Compendium for the #Acorn #Electron, containing three amazing hacked versions of Elite on one disc.
It includes a brand new version: musical Elite. On the Electron!
Lots of details here: elite.bbcelite.com/hacks/elite_...
#retrogaming #retrocomputing #bbcmicro
It includes a brand new version: musical Elite. On the Electron!
Lots of details here: elite.bbcelite.com/hacks/elite_...
#retrogaming #retrocomputing #bbcmicro
August 20, 2025 at 12:26 PM
I'm pleased to announce the #Elite Compendium for the #Acorn #Electron, containing three amazing hacked versions of Elite on one disc.
It includes a brand new version: musical Elite. On the Electron!
Lots of details here: elite.bbcelite.com/hacks/elite_...
#retrogaming #retrocomputing #bbcmicro
It includes a brand new version: musical Elite. On the Electron!
Lots of details here: elite.bbcelite.com/hacks/elite_...
#retrogaming #retrocomputing #bbcmicro
With only about 2 days left, I couldn't help myself but make a pledge to the Spectrum Next kickstarter for an upgrade board 🫣
August 16, 2025 at 9:47 AM
With only about 2 days left, I couldn't help myself but make a pledge to the Spectrum Next kickstarter for an upgrade board 🫣
This man speaks truth, thanks Colin! 🥰
If you've not already tried @0xc0de.bsky.social's amazing Electroniq emulator for the Acorn Electron, do check it out! It's my go-to now for playing Electron games under emulation or just tinkering about with Electron code.
Electroniq update. More reliable 50fps. Improved accuracy. Analogue/digital joysticks support, e.g. DS4Windows + PS4 controller. Load plus1.rom or ap6.rom for analogue joysticks. Added more quickplay ROMs (games) thanks to Nyimski 0xc0de6502.github.io/electroniq/
August 13, 2025 at 8:10 PM
This man speaks truth, thanks Colin! 🥰