Lmst

How to write "Hello, world!" in Z80 assembly language:

https://anoldmanbythesea.blogspot.com/2026/03/im-feeling-kind-of-nostalgic-today-so-i.html?m=1

#zxspectrum #machinecode #z80 #retrogaming

Voy a darle un descanso al BASIC del Spectrum y a retomar mis lecciones de ensamblador para Zilog Z-80 y de código máquina. Necesito más velocidad y más eficiencia de los recursos. Además parece que el libro está dirigido personalmente a mí. 😎

#Spectrum #assembler #machineCode #z80

Portada del libro "Spectrum Machine Language for the Absolute Beginner", escrito por William Tang y publicado por Melbourne House en 1982.

Planet Proton, a #BASIC & #machinecode program from #yoursinclair magazine

Download:
https://spectrumcomputing.co.uk/entry/3753/ZX-Spectrum/Planet_Proton

#zxspectrum #retrogaming

Skimming Toni Baker's «Mastering Machine Code on your ZX81» and i love the chapter titles, which feature a hand-drawn illustration of the ZX81 circuit board. I believe the PCB tracks on the ZX81 were themselves hand-drawn, which was the fashion at the time. [edit: i see from the title page, that the illustrator is Cathy Lowe, and they like a bit of slightly wobbly Letraset Helvetica]

#ZX81 #MachineCode

A drawing of the ZX81 PCB. There are two large chips, one with "Chapter One" written over it, and another with "An Introduction" written over it. 2 smaller chips are also visible. Between them run a whole mass of tracks and vias and components like resistors and maybe ceramic capacitors. The tracks curve in sometimes quite organic ways, because they were designed by hand, not by computer.

Tele Puzzle, a #BASIC & #machinecode game from #microhobby magazine.

Download:
https://spectrumcomputing.co.uk/entry/27586/ZX-Spectrum/Tele_Puzzle

#zxspectrum #retrogaming

C64 Assembly Basics: Fairlight TV’s On-Ramp to 6502 Coding
#Commodore64 #C64 #6502 #6510 #AssemblyLanguage #RetroComputing #C64Coding #FairlightTV #MachineCode
https://theoasisbbs.com/c64-assembly-basics-fairlight-tvs-on-ramp-to-6502-coding/?fsp_sid=1257

Fire Cracker, a #sinclairuser shooter made in "#machinecode marvel".

Download:
https://spectrumcomputing.co.uk/entry/26673/ZX-Spectrum/Fire_Kracker

#zxspectrum #BASIC #retrogaming

Mad Drivers, a #machinecode game published in #microhobby magazine.

Download:
https://spectrumcomputing.co.uk/entry/28027/ZX-Spectrum/Mad_Drivers

#zxspectrum #BASIC #retrogaming

I pushed out a new DiskSumo patch, with my new machine code routines. It's been fun to learn some 6502 instructions, and debugging the code just reading it over and over again using Zaks' book as reference.

Now a floppy disk backup takes only 40 minutes over 1200 bps Xmodem. I'll start a mass effort to back up all my 300 floppies.

https://github.com/aakoskin/DiskSumo/commit/4332018d598d8c130cc6ddd34df2b7b66150db6a

#Commodore64 #Floppy #XMODEM #MachineCode #RetroComputing