SolderDemon
@solderdemon.bsky.social
Open hardware kits and retro CPU boards.
Full transparency. Real learning. No emulators.
Build it. Solder it. Understand it.
https://solderdemon.com
Full transparency. Real learning. No emulators.
Build it. Solder it. Understand it.
https://solderdemon.com
The craziest part: people still design new projects around the Z80 today.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
January 30, 2026 at 8:25 PM
The craziest part: people still design new projects around the Z80 today.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
The Z80 spread everywhere.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
January 30, 2026 at 8:25 PM
The Z80 spread everywhere.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
People wrote serious software on the Z80 with kilobytes of memory.
Operating systems, games, compilers all inside limits that feel impossible today.
Operating systems, games, compilers all inside limits that feel impossible today.
January 30, 2026 at 8:25 PM
People wrote serious software on the Z80 with kilobytes of memory.
Operating systems, games, compilers all inside limits that feel impossible today.
Operating systems, games, compilers all inside limits that feel impossible today.
The Z80 powered childhoods.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
January 30, 2026 at 8:25 PM
The Z80 powered childhoods.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
The craziest part: people still design new projects around the Z80 today.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
January 30, 2026 at 8:21 PM
The craziest part: people still design new projects around the Z80 today.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
Not for nostalgia, but because it’s simple, predictable, and fun.
Old doesn’t mean useless.
The Z80 spread everywhere.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
January 30, 2026 at 8:21 PM
The Z80 spread everywhere.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
Not just computers, calculators, music gear, arcade machines, industrial hardware.
If it needed a brain in the 80s, there’s a good chance it was a Z80.
People wrote serious software on the Z80 with kilobytes of memory.
Operating systems, games, compilers all inside limits that feel impossible today.
Operating systems, games, compilers all inside limits that feel impossible today.
January 30, 2026 at 8:21 PM
People wrote serious software on the Z80 with kilobytes of memory.
Operating systems, games, compilers all inside limits that feel impossible today.
Operating systems, games, compilers all inside limits that feel impossible today.
The Z80 powered childhoods.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
January 30, 2026 at 8:21 PM
The Z80 powered childhoods.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
ZX Spectrum, MSX computers, early home systems, this chip introduced an entire generation to programming and gaming.
Next steps: better documentation and making the rosco project easier to learn and work with.
More updates soon.
More updates soon.
January 19, 2026 at 2:16 PM
Next steps: better documentation and making the rosco project easier to learn and work with.
More updates soon.
More updates soon.
SCN68681C chips have been discontinued for years.
It took a long time to find a source, and on the first try I managed to get NOS (new old stock) from warehouse stock.
Condition is excellent: clean markings and fully working parts.
It took a long time to find a source, and on the first try I managed to get NOS (new old stock) from warehouse stock.
Condition is excellent: clean markings and fully working parts.
December 19, 2025 at 7:43 PM
SCN68681C chips have been discontinued for years.
It took a long time to find a source, and on the first try I managed to get NOS (new old stock) from warehouse stock.
Condition is excellent: clean markings and fully working parts.
It took a long time to find a source, and on the first try I managed to get NOS (new old stock) from warehouse stock.
Condition is excellent: clean markings and fully working parts.
The chip contains undocumented instructions that still execute consistently on real hardware. Developers discovered them by experimentation, and some are faster or more powerful than official ones. They’re risky — but legendary.
December 18, 2025 at 2:38 PM
The chip contains undocumented instructions that still execute consistently on real hardware. Developers discovered them by experimentation, and some are faster or more powerful than official ones. They’re risky — but legendary.