The Oasis BBSMay 21
Mac Release of C64 Dev Machine Brings Polytricity’s Tool to macOS
#C64DevMachine #Commodore64 #C64 #RetroComputing #6502Assembly #VICEEmulator #MacOS
https://theoasisbbs.com/mac-release-of-c64-dev-machine-brings-polytricitys-tool-to-macos/?fsp_sid=7129
The Oasis BBSMay 15
C64 Assembly Looping Gets Practical in Coding with Culp Part 2
#Commodore64 #C64 #6502Assembly #64tass #RetroComputing #CodingWithCulp #C64Programming #AssemblyLanguage
https://theoasisbbs.com/c64-assembly-looping-gets-practical-in-coding-with-culp-part-2/?fsp_sid=6814
The Oasis BBSMay 14
C64 Dev Machine Basics: Polytricity Explains the First Steps
#C64DevMachine #Commodore64 #Polytricity #C64Coding #6502Assembly #RetroComputing #VICEEmulator
https://theoasisbbs.com/c64-dev-machine-basics-polytricity-explains-the-first-steps/?fsp_sid=6774
McMartinMay 9

This week on the blog: ...mostly showing my work for what fed into last week's post, actually. A line-by-line comparison of four implementations of the same function on four variously related retro architectures.

This is gonna be one of the crunchy ones that most folks will want to skip but that the folks who like it will *really* like, in my experience.

https://bumbershootsoft.wordpress.com/2026/05/09/comparing-an-lz4-decompressor-on-four-legacy-cpus/

#retrocomputing #z80 #6502assembly #8086assembly #intel8080

Comparing an LZ4 Decompressor on Four Legacy CPUs

A few years ago, I needed to save some cartridge space in a SNES project, and I did so by compressing that data with the LZ4 compression algorithm from 2012. I found that working within the constra…

Bumbershoot Software
The Oasis BBSMay 8
C64 Dev Workflow: Polytricity Tests C64 Dev Machine on the C64 Ultimate
#C64DevMachine #Commodore64 #C64Ultimate #Polytricity #C64Development #6502Assembly #SIDMusic #RetroComputing #Commodore
https://theoasisbbs.com/c64-dev-workflow-polytricity-tests-c64-dev-machine-on-the-c64-ultimate/?fsp_sid=6449
The Oasis BBSMay 8
WolfsciiPack C64 Brings U-Boat Periscope Combat to Commodore 64
#WolfsciiPack #Commodore64 #C64 #RetroGaming #C64Games #Johnny5 #8BitGaming #ItchIO #6502Assembly #RetroComputing
https://theoasisbbs.com/wolfsciipack-c64-brings-u-boat-periscope-combat-to-commodore-64/?fsp_sid=6443
The Oasis BBSMay 5
Visual Assembler 1.5.1 Brings C64 Ultimate Fixes And UI Polish
#VisualAssembler #Commodore64 #C64Ultimate #C64Coding #6502Assembly #RetroComputing #VICEEmulator #C64Development
https://theoasisbbs.com/visual-assembler-1-5-1-brings-c64-ultimate-fixes-and-ui-polish/?fsp_sid=6284
The Oasis BBSMay 5
From the Dead X16 Gets a New Commander X16 Dev Update
#FromTheDead #CommanderX16 #AndyMcCall #RetroGaming #RetroComputing #6502Assembly #8BitGames #IndieGameDev
https://theoasisbbs.com/from-the-dead-x16-gets-a-new-commander-x16-dev-update/?fsp_sid=6266
The Oasis BBSMay 4
C64 Visual Coding Advances with C64 Dev Machine V099.61.9
#C64 #Commodore64 #C64DevMachine #Polytricity #6502Assembly #RetroComputing #C64Coding #GameDev
https://theoasisbbs.com/c64-visual-coding-advances-with-c64-dev-machine-v099-61-9/?fsp_sid=6254
0x10f/kalle/qalleApr 18

I came up with some 6502 assembly tricks:
- make N and Z flags reflect A (no side effects): AND #$FF (used in Excitebike; alternatives: ORA #0 or EOR #0)
- make N and Z flags reflect X (no side effects*): INX & DEX (or for Y: INY & DEY)

*If your interrupt routines don't access the value of X besides preserving it.

#6502assembly #6502_assembly