#6502asm — Public Fediverse posts

@wyatt At least it isn't a Commodore 64, Atari 800, Apple II, or NES, where disabling TSX instructions will make a lot of software not work.

#6502asm #mos6502

This week on the blog: the latest release of my Ophis assembler hit an ugly corner of 6502 assembly language syntax (Z80 has it too, x86 and m68k don't), and that turns out to be a good excuse to drop a couple of thousand words on parsing theory.

Also, the Bison parser generator is cooler than it was the last time I looked at it.

https://bumbershootsoft.wordpress.com/2026/04/04/some-subtleties-when-parsing-6502-assembly-language/

#6502asm #parser #assembly

🚶🏻Endless Journey: The Journey to Journeyland Starring Jimmy Journey✨

My entry for Byte Off VI

Theme:"It’s not the destination. It’s the journey."

https://theretroverse.com/product/endless-journey-the-road-to-nowhere-starring-jimmy-journey/

#indienes #gamedev #homebrew #retrogame #retrogaming #nes #nesdev #indieretro #nesmaker #6502asm #byteoffvi #gamejam

So I've jumped on the #6502 bandwagon. I've been taking Ben Eater's 6502 setup and put it on a Tang Nano 9K #FPGA.
#mos6502 #6502asm #verilog #hdl

https://github.com/ellisgl/TN9K-BE65C02

#Bustina carts are back in stock after the first batch sold out almost immediately! Thanks to everyone for your excitement for my game! Ships internationally!

https://retrogametycoon.com/fi/catalogue/bustina-and-the-search-for-booty_1581386/

#indienes #gamedev #homebrew #retrogame #nes #nesdev #indieretro #nesmaker #6502asm

The first PHYSICAL copies of my game #Bustina are up for sale now! Ships internationally! Big thanks to Rewinded Entertainment for publishing!!

https://retrogametycoon.com/fi/catalogue/bustina-and-the-search-for-booty_1581386/

#indienes #gamedev #homebrew #retrogame #nes #nesdev #indieretro #nesmaker #6502asm

If you love Assembly, I am sure you'll love my #UltimASM #DSL it allows you to design the Assembly of your dreams or to code in #6502asm , #MC6809 , #mc68000 and even #VAX #ASM on #RISC_OS (and all other supported platform by my #UltimaVM).

Want to know more? Come at the RISC OS London Show Saturday 25th October!

#riscos #bytecode #virtualMachine

Haha I love it :smugcat:

#deathgrips #nolove #nes #nesdev #8bit #famicom #nintendo #gamedev #6502asm #assembly

On it

#nes #nesdev #gamedev #8bit #assembly #coding #6502asm #nintendo

Rest in spaghetti never forgetti :smugcat:

#nes #nesdev #gamedev #coding #assembly #6502asm

Shift the picture to help PacMan.
http://johann.poufpouf.free.fr/discoco/fr/index.html?id=amim55&group
#discoco #wip #6502asm #webdev #education #libre

Hell yeah

#nes #nesdev #indienes #gamedev #coding #assembly #6502asm

Display the image.

http://johann.poufpouf.free.fr/discoco/fr/index.html?id=amim05

#discoco #wip #6502asm #webdev #education #libre

#discoco #wip #6502asm #webdev #libre #education

[fr] Petit jeu #6502asm avec #discoco :
RETROUVEZ l'image mystère

http://johann.poufpouf.free.fr/discoco/fr/index.html?base64=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

[en] Tiny game #6502asm with #discoco
FIND the mysterious picture

http://johann.poufpouf.free.fr/discoco/en/index.html?base64=eyJhY3Rpdml0eSI6ImFzbSIsImxhbmciOiJlbi1VUyIsImRhdGEiOnsibmFtZSI6IkFzbSA2NTAyIiwiYXJnIjpbeyJ2YWx1ZSI6Imxvb3AiLCJ0eXBlIjoiYWIifSx7InZhbHVlIjoiaW1nIiwidHlwZSI6ImF4In0seyJ2YWx1ZSI6IjB4MDIwMCIsInR5cGUiOiJheCJ9LHsidmFsdWUiOiIweDUwIiwidHlwZSI6ImltIn1dLCJoZWFkZXIiOnsiaW5pdCI6IjRjNTMxMCIsImltZyI6IjU1NTU1NTU1NTUzZmZmMDAwMDAwYzNmMGQ1NTU1NWNjMGNjMDAwMDRjMGZjYzAwMDEwYzNmMGMwM2ZjMGMwMDBjMGZmZjBjM2YwYzNkZGYwM2ZmZjAzZGRmMDA0MDAwM2ZmZjAwNDAwMDEyYTgwMDQwMDA0ZDVmMDA0MDAxMGYzYzBmZmZmZmZmZmZmYWFhYWFhYWFhYWZmZmZmZmZmZmYifSwiZm9vdGVyIjp7fSwiYXZhaWxhYmxlIjpbImxkYSIsInN0YSIsImlueCIsImNweCIsImJuZSJdLCJnb2FsIjpbIi0gRElTUExBWSBpbWFnZSAnaW1nJyAoMjDXMTbXNCkiLCIoTm8gaGVscCBoZXJlKSJdLCJjaGVjayI6W3siY3RybCI6eyJzY3JlZW4iOiI1MWNlOWJjOTZmOTRiMmY3MGJhNGUxM2U5YWVlNDRiZiJ9LCJsYWJlbCI6ImwxIiwidmFsaWQiOnRydWV9XSwibG9jYWxlIjp7ImwxIjpbIkNvbmdyYXR1bGF0aW9ucyBmb3IgdGhpcyBtaXNzaW9uISIsIlByZXNzIHRoZSBydW4gYnV0dG9uIHRvIGNvbXBsZXRlIiwidGhlIGxldmVsLiJdfSwiaGVscCI6IiIsInNjcmVlbmlkIjoiNyJ9fQ==

Pas trop présent sur le Fédiverse en ce moment. J'avance toujours sur mon simulateur de processeur 6502 mais la création de niveau est extrêmement longue...

Voici 2 exemples parmi les premières missions.

http://johann.poufpouf.free.fr/discoco/fr/index.html?id=amre05&group

http://johann.poufpouf.free.fr/discoco/fr/index.html?id=amme03&group

#discoco #wip #webdev #education #libre #6502asm

Something absolutely crazy just happened! I wrote a bunch of code (by my standards, which are poor), then compiled it and executed it as I normally do, and it just worked right away.
It's this jump, blessed by Assembly God!

#nes #indienes #nesdev #gamedev #coding #assembly #6502asm #indiedev

He will end you :smugcat:

#nes #nesdev #gamedev #coding #assembly #6502asm #indiedev

Refactored my massive CMP branch sausages using the RTS trick, really neat stuff - https://www.nesdev.org/wiki/RTS_Trick
Scared of indirect jumping because of the weird non-obvious bug that I stumbled upon. Something about the lower byte of an address being stored on the last memory page. So hard to keep such things in mind 🥵

#nesdev #assembly #asm6502 #6502asm #coding

Quelques exercices sur les registres du processeur 6502.

http://johann.poufpouf.free.fr/discoco/fr/index.html?menu&id=amre05,amre11,amre12,amre21,amre22,amre23

#discoco #wip #webdev #education #free #6502asm

Une deuxième mission en assembleur 6502. Pas très différente de la première, mais désormais l'aide (le point d'interrogation) est disponible.

http://johann.poufpouf.free.fr/discoco/fr/index.html?id=amre02

#discoco #wip #webdev #education #libre #6502asm

v . v
'

#nes #nesdev #gamedev #aphextwin #8bit #chiptune #coding #assembly #6502asm #indiedev

Encore énormément de boulot à faire, mais la première mission du simulateur de processeur 6502, en version alpha de chez alpha, est disponible.

http://johann.poufpouf.free.fr/discoco/fr/index.html?id=amre01

Accessoirement, le niveau "bac à sable" est toujours accessible ici (la compilation est OK, mais l'exécution est limitée à 2,3 opérations):

http://johann.poufpouf.free.fr/discoco/fr/index.html?id=am01

#discoco #wip #webdev #education #libre #6502asm