History:

ZX81, 16K ZX Spectrum (later upgraded to 48K), Atari 130XE, Atari 520ST, Atari 520STe, Atari MegaSTe, Atari Falcon, Performa 6200, PowerBook G3, PowerMac G4, PowerMac G5, Mac Pro, Raspberry Pi 3B, Raspberry Pi 4B, AMD Ryzen 5 9600X.

Assembler-languages:

Z80, 68000, 680x0, COP8, PowerPC, AVR, ARM7TDMI, ARM Cortex-M, ARM Cortex-A (ARM32, Aarch64).

Have been writing tools and games for Atari ST, never published. Wrote many unpublished tools for Mac as well. Was Mac lead-developer on a web-browser many years ago. Have also been developing a small operating system.

My favorite features and software on the systems I’ve used:

ZX Spectrum: Quick startup, rock solid system. =D

Devpac3 on the Atari ST-series.

Code Warrior (inline-assembly in C-programs were fantastic, to this date, still unmatched)

MPW - the worksheet was excellent, now finding it in Haiku, is a joy.

Regions on the Mac. Handles on the Mac.

Translucent windows on the old Mac OS (when using Power Windows)

BTRFS on Linux

Photoshop CS2 on Mac

Pages + Numbers on Mac OS X

GyazMail on Mac OS X

Games I like:

Time Gate, Artic Invaders, Atic Atac, Knight Lore, Boulder Dash, EV Nova, Fury of the Furries, Lode Runner Mad Monk’s Revenge / Lode Runner Online, Shadow Wraith, Souls in the System, R-Type, Xenon 1, Xenon 2, Deimos Rising, Ferazel’s Wand, Bubble Bobble, Mouse Quest, (Flash-games:) GardenTD, Pursuit of Hat 1+2, LightBot 1+2, Frog Dares, Pick and Dig, I’m Sticky, Xeno Tactic 1+2, Starcom. Endless-Sky.

(there are probably more)