0xC0DE @0xC0DE6502 Twitter profile

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0xC0DE

1 year

Proud of the free tools and games I make: max65: 65xx cross-assembler Soko-Ban: puzzle game for Elk/Beeb Electrobots 1 & 2: games for Elk/Beeb/PC Donation=❤️

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0xC0DE

@0xC0DE6502

5 months

This had to be done: I really like the 2 colour effect of *only* drawing the simple landscape contouring

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0xC0DE

@0xC0DE6502

5 months

After many optimisations of my 6502 code, a smaller landscape (88x48 wide pixels) runs at 25fps, while a larger landscape (128x48 wide pixels) runs at ~13fps. With this tweet I also want to celebrate passing 4100, 4200, 4300 and 4400 followers at an incredible rate! THANKS! 🥰🥳

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0xC0DE

@0xC0DE6502

4 months

Acorn Electron "not promising a game" WIP. I have expanded the parallax landscape (losing detail, but gaining fps) and added a little spaceship (stolen from Gauntlet). All at 25fps. Also, I can't keep up with celebratory tweets, but here's to 4500+ and 4600+ followers! 😍🍾

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0xC0DE

@0xC0DE6502

10 months

Well hello there! 😍 #zxspectrumnext

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0xC0DE

@0xC0DE6502

4 years

Enemies are in! Cannot harm you yet. I'm proud of the smooth, zero-flicker animation, especially on the Acorn Electron. Enemies (type, location, speed) are also placed in Tiled and then 'Pythonized' into the game source #8bitcoders #acornelectron #bbcmicro #indiedev #gamedev

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0xC0DE

@0xC0DE6502

2 years

Pretty happy with this wireframe raycaster. Still on PC. Slowly working towards a 6502 asm version

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0xC0DE

@0xC0DE6502

2 years

First attempt at shading using ordered dithering in my raycaster on the Acorn Electron #raycaster #acornelectron #8bitcoders

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0xC0DE

@0xC0DE6502

4 years

Play my new 8-bit game Electrobots right now on your Acorn Electron, BBC Micro or BBC Master (or emulator). Download and play for free. Donate whatever you want to support me: #acornelectron #bbcmicro #8bitcoders #gamedev

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0xC0DE

@0xC0DE6502

2 years

For the longest time (decades) I have wanted to code (and understand) a ray casting algorithm. Today is the day! This runs on a PC (C+Allegro)

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@0xC0DE6502

3 years

Isn't it funny/weird/exciting/nerdy that so many people (at least in my Twitter bubble) are still making new software and hardware for or based on 40 year old 8bit machines? I absolutely love it!

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@0xC0DE6502

5 months

Experimenting with simple "contouring" to make the individual monochrome green hills stand out more (disclaimer: this is a prototype on a fast PC, not on an Acorn Electron)

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@0xC0DE6502

5 months

So I'm finally able to show how my Voxel Space experiments on the PC (d)evolved into a first something feasible on the Acorn Electron. This is a 128x48x4 (wide pixels) parallax landscape. Can increase framerate by reducing viewport size and/or landscape details

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0xC0DE

@0xC0DE6502

4 years

As suggested by some of my Twitter friends, here is a rotating Earth where the opposite side is drawn as well. Causing an obvious drop in framerate but I like the extra 3D effect it creates. #8bit #8bitcoders #acornelectron #bbcmicro #indiedev #demoscene

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0xC0DE

@0xC0DE6502

3 years

Poor man level design, turning compile time strings into run time graphics. Works really well!

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0xC0DE

@0xC0DE6502

3 years

I vowed to keep this Twitter feed about retro stuff only, so this is all I will say about it. It's just sad and heartbreaking to see a handful of my retro friends actively spreading anti vaccination messages and global conspiracy theories 😥

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0xC0DE

@0xC0DE6502

4 years

Finally decided on a name for my current game for the Acorn Electron and BBC Micro..... Electrobots. You control 2 Electrobots: R-bot on land and M-bot under water. Designed ~85 rooms so far #8bitcoders #acornelectron #bbcmicro

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@0xC0DE6502

5 months

Just a quick test to see if wide pixels and a 4 colour palette (mimicking Acorn Electron MODE 5) would work for a voxel space terrain rendering tech demo

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@0xC0DE6502

5 years

I proudly present my Bad Apple 🍎 demo (v0.1) for the Acorn Electron! Video is not optimal. It looks much better on a real Electron, I promise. Tune by @inversephase , ported by @simondotm . Full video: #8bit #acornelectron #bbcmicro #demoscene #indiedev

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0xC0DE

@0xC0DE6502

3 years

Experimenting with isometric pixel art on my Acorn Electron (MODE 4, 320x256x2)

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@0xC0DE6502

4 years

Very first experiment for my new game on the Acorn Electron and BBC Micro. What do you think?

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0xC0DE

@0xC0DE6502

2 years

First attempt at a wireframe raycaster in 6502 asm on an Acorn Electron... at ~2fps 🤣 160x200 projection plane (wide pixels in MODE 5). Obvious optimisations: smarter wipe, smaller viewport #acornelectron #bbcmicro #8bitcoders

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0xC0DE

@0xC0DE6502

3 years

Proof that I can make the Trashman game on the Acorn Electron at 50fps with just one screen buffer, thus saving a whole lot of precious RAM. That took some serious head scratching and optimisation to get it right regarding flicker-free sprite plotting 🥵 #trashman #8bitcoders

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@0xC0DE6502

2 years

More #raycaster experiments on my #acornelectron . There is a crude floor (and ceiling) and objects can have different heights now #8bitcoders

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@0xC0DE6502

4 years

Starting to feel like a game now. Game stats are all working at the top of the screen. Enemies drain your energy now. Objects can be collected and are also shown at the top of the screen. These are just a few test screens btw #gamedev #8bitcoders #acornelectron #bbcmicro

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@0xC0DE6502

8 months

I am having fun with improving the classic Acornsoft Meteors game for the Acorn Electron. So far I have optimised countless things to achieve smooth & consistent movement with no sprite flicker at all. The spaceship in Meteors++ (on the right) is temporarily indestructible btw😅

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@0xC0DE6502

3 years

Remake of Chuckie Egg in e- (Acorn Electron version). Stress test. All enemies. No sprite flicker. The Elk is not even breaking a sweat (okay, maybe a little 😅) #8bitcoders #acornelectron

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@0xC0DE6502

2 years

Electrobots Going Underground is out now! Play my new game on Acorn Electron, BBC Micro or even on Windows with the self-contained EXE Free to play but your support on is greatly appreciated. Enjoy! #acornelectron #bbcmicro

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0xC0DE

@0xC0DE6502

5 years

It works! I've got this huge basketball bouncing smoothly on my Acorn Electron in high-res screen MODE 1 at 50fps. I had to record straight from my screen because no emulator can handle this 🏀 #8bit #acornelectron #bbcmicro #demoscene #indiedev

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0xC0DE

@0xC0DE6502

5 years

My work in progress on the 10 lines of BASIC challenge by @Basic10L . Pacman-ish ASCII-man whatever 😆 on the Acorn Electron or BBC Micro. Exactly 10 lines at the moment #8bit #8bitcoders #acornelectron #bbcmicro

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@0xC0DE6502

3 years

Starting a remake of Chuckie Egg in e-, just because I can =)

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@0xC0DE6502

4 years

Who said you can't have all 8 colours in MODE 5? 😎 #electrobots #8bitcoders

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0xC0DE

@0xC0DE6502

3 years

Single page Frogger (250 bytes) for Acorn Electron. Now with movement, sound, collision detection and level progression (more cars on higher levels). Pretty chuffed with this tiny 6502 asm game #8bitcoders

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0xC0DE

@0xC0DE6502

1 year

I had a great day today together with about 30 other Acorn enthusiasts at a retro meeting in NL. Pictured is my setup for today: an Acorn Electron showing one of my demos and my dev laptop showing a prototype of my latest, unnamed tank game

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0xC0DE

@0xC0DE6502

5 years

Gameplay of @-man. 10 lines of BBC BASIC (max 120 chars each). Works on Acorn Electron and BBC. Features: full-screen maze, up to 4 chasers, highscore, sound, increasing difficulty. This may very well be my very first actually finished game ever! #8bitcoders #acornelectron #8bit

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0xC0DE

@0xC0DE6502

4 years

I'm thrilled to see that more and more people on Twitter still own or have recently bought an Acorn Electron! I would love to create a public Twitter list of all Elk enthusiasts that are ACTIVELY USING IT. Please reply, with a picture if possible. RT is great. I'll go first 😁

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@0xC0DE6502

2 years

Look at the speed of this thing! 🤓 #raycaster #acornelectron #8bitcoders

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@0xC0DE6502

3 years

🥳🎉 First release of Python, an 8bit game for the Acorn Electron and BBC Micro, created with my own e- compiler. Source will be published later. Download and play Python now: Please support me: #8bitcoders #acornelectron #bbcmicro

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0xC0DE

@0xC0DE6502

4 years

Progress update on my next Elk/Beeb game. The tile map from Tiled is converted to room data in my 6502 asm source, including room exits (Python FTW). And the little robot can now move from one room to the next. I have a tile system in-game now, including tile collision detection

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0xC0DE

@0xC0DE6502

7 months

To celebrate 4000+ followers (thank you! 🥳), I am releasing the initial version of Meteors++, an enhanced version of Acornsoft Meteors for the Acorn Electron. It features flicker free and smooth animation with consistent speed. Disk/tape images here:

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0xC0DE

@0xC0DE6502

3 years

ASCII Invaders, my third and probably last ASCII BASIC 10Liner game for the #asciibasic10liner competition. Written in BBC BASIC for Acorn Electron and BBC Micro. Aliens move faster on higher levels. Couldn't fit more features in 10 short lines of max 72 chars each 😅 #8bitcoders

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0xC0DE

@0xC0DE6502

2 years

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0xC0DE

@0xC0DE6502

5 years

Acorn Electron #retrosunday (share your retro setup)

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0xC0DE

@0xC0DE6502

4 years

Look at these beauties! Thanks @rhayadercompute ! 👍

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@0xC0DE6502

3 years

I just released Manic Miner 2021 (v0.06b) for the Acorn Electron #8bitcoders #acornelectron

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0xC0DE

@0xC0DE6502

3 years

The essence of Pacman in 255 bytes of 6502 asm for the Acorn Electron. This is the best I can do. Pretty tough challenge. If I remove the colourful UDGs, I could probably add better ghost movement, a larger maze and sound #8bitcoders #tinyasm #acornelectron

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0xC0DE

@0xC0DE6502

4 years

Hard work is paying off. Masked sprite plotting. Smooth movement @ 50fps: left, right, jump, turbo. Just moving and bouncing the electron (player) around some simple platforms makes me a happy man 🤓👍 #8bitcoders #gamedev #acornelectron

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0xC0DE

@0xC0DE6502

9 months

I hope the kids will like their new Acorn microcomputer! Merry Xmas and Happy Holidays everyone! 🎄🎅🎁⛄️

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0xC0DE

@0xC0DE6502

4 years

First test with full screen (320x256, 50fps) parallax effect (plus sprite overlay) on Acorn Electron

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0xC0DE

@0xC0DE6502

4 years

Electrobots intro screen and attract mode #8bitcoders #acornelectron #bbcmicro

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0xC0DE

@0xC0DE6502

3 years

Always wanted to play Lode Runner on your Acorn Electron? Now you can! All 160 levels... #8bitcoders #acornelectron #gamedev #indiedev

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0xC0DE

@0xC0DE6502

2 years

Next iteration of raycaster (on PC). No more floating point, fixed-point math only. Trig tables. Definitely some accuracy issues, but that was to be expected

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0xC0DE

@0xC0DE6502

4 years

I'm designing and testing my own game world. Couldn't be happier. Can't show much of it though, because I would be spoiling the game for any possible future players (other than myself 🤣). Here are two of the interconnected rooms...

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0xC0DE

@0xC0DE6502

3 years

Step 3B! One can never have too many colours and patterns =) Remember, this is 50fps on an Acorn Electron in slow MODE 2 and all the magic needs to happen during HSYNC! #acornelectron #8bitcoders #demoscene

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0xC0DE

@0xC0DE6502

3 years

Can't break the chain, so here's a BIG THANK YOU to all 2400+ people following my retro shenanigans on Twitter! 🥳🎂🍻(level made in the Acorn Electron version of Lode Runner)

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0xC0DE

@0xC0DE6502

3 years

These are the games I created for or ported to the Acorn Electron: Elementum, Electrobots, Manic Miner and Lode Runner. I'm very proud of myself for not just starting these but actually finishing and releasing them!🦚 Why not give them a go? #8bitcoders

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@0xC0DE6502

4 years

Brutal! And it's only level 1 🤣 #acornelectron #8bitcoders

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@0xC0DE6502

4 years

🥳 Celebrating 2100 followers on Twitter in appropriate 8-bit retro style on my Acorn Electron. Thank you everyone! 🍻

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0xC0DE

@0xC0DE6502

3 years

2600 followers! Thank you everyone for taking an interest in my little projects and for sharing this awesome retro hobby with me 🥰

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0xC0DE

@0xC0DE6502

4 years

Look what I found under the tree! 🎄🎁 I couldn't be more proud for having Elementum published on real disks. If this isn't a childhood dream come true, I don't know what is! Available mid-January 2021 from @RetroSoftwareUK for Acorn Electron, BBC Micro or BBC Master 🥰

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@0xC0DE6502

3 years

Starting to look like a game! #8bitcoders

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@0xC0DE6502

3 years

Frogger in 256 bytes?

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@0xC0DE6502

4 years

Bought a new (gaming) laptop. So, first thing to try: does it play Chuckie Egg!? Am I doing this right? 😁

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0xC0DE

@0xC0DE6502

2 years

Faster, faster, faster. I keep finding ways to optimise my raycaster for the Acorn Electron. Less calculations, more interpolation ==> more speed, less accuracy. #8bitcoders #acornelectron #raycaster

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0xC0DE

@0xC0DE6502

5 years

I can't believe it! 1000 followers on Twitter!! 😎👍 A big THANKS to every single one of you. It makes me happy that you are enjoying my little #8bit creations. And I'm glad to be part of this amazing retro community. Cheers! 🍻

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0xC0DE

@0xC0DE6502

11 months

Multi-room levels are working now 👍

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0xC0DE

@0xC0DE6502

3 years

🔊 Manic Miner update (Elk version): correct colours (+ separate colour palette for Air/Score/Lives/Level), hardware key scanning (no OSBYTE), music playing from custom interrupt handler #8bitcoders #acornelectron

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0xC0DE

@0xC0DE6502

4 years

Progress BASIC 10liner...

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0xC0DE

@0xC0DE6502

3 years

Thanking all of my 2500 friends on Twitter for putting up with my Acorn Electron shenanigans! 🍻🎂 Here's a custom "2500" level in Mr. Ee! (on the BBC Micro) to celebrate 😎🔊

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0xC0DE

@0xC0DE6502

2 years

So far Python seems really suitable for writing a 6502 assembler. Lists, tuples, string manipulation, etc come in very handy for a C/asm programmer like myself. I will be supporting all documented and all undocumented 6502 opcodes

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0xC0DE

@0xC0DE6502

4 years

🔥 1900 friends on Twitter! 🔥 ♥️ THANK YOU ALL! ♥️

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0xC0DE

@0xC0DE6502

6 months

Everything up and running at ABUG 2024 👍

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0xC0DE

@0xC0DE6502

11 months

The future is here!

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0xC0DE

@0xC0DE6502

4 years

Elementum v1.00 is now released: This is my first ever 8-bit game for the Acorn Electron, BBC Micro and BBC Master. Enjoy! #8bitcoders #acornelectron #bbcmicro #indiedev #gamedev

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0xC0DE

@0xC0DE6502

3 years

Did someone say colour? No problem! 😁 #trashman #8bitcoders #acornelectron #bbcmicro

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0xC0DE

@0xC0DE6502

2 years

This may be my dumbest or brightest idea in a while: a stand alone Windows 64bit executable that combines a minimal version of my Acorn Electron emulator and my 8bit game Electrobots. Instant play! ALT+ENTER = full screen. Please try and report back:

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0xC0DE

@0xC0DE6502

4 years

You could say I'm all set to do some coding

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0xC0DE

@0xC0DE6502

4 years

I want to thank everyone who played my game Electrobots () so far. I'm overwhelmed by the positive response. And I'm especially grateful to those who donated () to support me. Thank you! Have a great retro weekend everyone!

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0xC0DE

@0xC0DE6502

3 years

Here's my disassembly of Lode Runner (BBC Micro version): Fully commented and with labels that make sense =)

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@0xC0DE6502

3 years

Always wanted to do one of these 😁

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@0xC0DE6502

4 years

For more interesting movement possibilities across the Robot World, I implemented these magic energy fields. Which completely coincidentally work exactly like ladders 😜 I get such a Chuckie Egg feeling when jumping from the top of one 'ladder' to the one above it

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0xC0DE

@0xC0DE6502

2 years

A few optimisations and sacrifices later... 8bit wireframe raycaster (6502 asm) Will be using a double screen buffer later #acornelectron #bbcmicro #8bitcoders

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@0xC0DE6502

2 years

6502 cross-assembler. I have implemented if/elif/else/endif and for/next, both at any desired nesting depth. Here's a simple example:

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@0xC0DE6502

3 years

I'm tired of 6502 asm and the Acorn Electron. From now on I will exclusively tweet about Z80 asm on the almighty Speccy!

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@0xC0DE6502

5 years

That kind of took me by surprise this weekend while I was visiting the UK! I am grateful for the 900+ people on Twitter who take an interest in what I am doing on my Acorn Electron. Here's what I quickly made in BASIC. THANK YOU! #8bit #8bitcoders #acornelectron #bbcmicro

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0xC0DE

@0xC0DE6502

3 years

🍻 Celebrating 3100 followers on Twitter with a special update of my remake of Chuckie Egg (written in e- for Acorn Electron and BBC Micro). Thank you all for your continuing interest, support and friendship! ❤ #8bitcoders #acornelectron #bbcmicro

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@0xC0DE6502

4 months

It's been 5+ years since I rediscovered my love for my childhood Acorn Electron. In those years I slowly expanded my retro bubble and was lucky to get to know many interesting people. Mainly on here, but also in real life. Thanks for making this a very pleasant journey and hobby!

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@0xC0DE6502

3 years

Very first mockup. Looks familiar?

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@0xC0DE6502

3 years

🔊 Nameless Snake game at 50fps for Acorn Electron / BBC Micro. Now with suitably annoying ear worm 🍿, sound effects, custom font, etc. All written in e- and compiled to 6502 asm #8bitcoders #acornelectron #bbcmicro

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@0xC0DE6502

4 years

Day #2 , continuing the positive vibe of 2021... I'm thanking my 2000+ friends on Twitter for taking an interest in my retro shenanigans! 🥳🍻🎂🥰

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@0xC0DE6502

3 years

I don't know what happened but I've reached 2700 friends on Twitter... a-MAZE-ing!! ❤ THANK YOU ❤

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@0xC0DE6502

3 years

This is my second game for the ASCII BASIC 10Liner competition (listing at end of video). For Acorn Electron (slow) and BBC Micro (okay). There is still time for you to join the jam! #asciibasic10liner #8bitcoders

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@0xC0DE6502

2 years

Wireframe raycaster on Acorn Electron. Additional minor optimisations are immediately countered by calculations needed for moving the player around the area. Can now turn left/right, strafe left/right, move forward/backward. Also: double screen buffers

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@0xC0DE6502

4 years

Shaved a few cycles off so I can now display a larger sphere (47x47 pixels) with more details at an acceptable speed #acornelectron #8bitcoders

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@0xC0DE6502

3 years

New Acorn Electron emulator feature: live view of the entire 32K of RAM as though it was screen memory. View in different, manually selectable layouts (MODE 0/1/2/4/5). Show what the game dev is hiding: level drawing, sprite data, double screen buffers, and much more.

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@0xC0DE6502

1 year

Sorry about the poor video quality, but can anybody guess how I did this on my standard Acorn Electron? Fullscreen effect in MODE 1 with 2 layers moving in different directions at different speeds. Spoiler: no colour cycling or other colour palette shenanigans! #acornelectron

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@0xC0DE6502

2 years

🔊 "Hello Twitter. This is 1bit sampled speech on the Acorn Electron" 🤯🤓

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1 year

Found this in one of my boxes: PSP 2000. Replacement battery is on its way. Some pretty cool games on this thing. Also, thinking out loud: how hard would it be to get one of my own games to work on this?

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@0xC0DE6502

4 months

My CHIP-8/S-CHIP emulator for the Acorn Electron is already twice as fast and I haven't even touched the sprite plotting routines yet! 😎 I was scanning for keys being pressed way too often, which is sloooow. (This is the game Blinky in S-CHIP high resolution mode)

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