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
MOS 6502: 5 Facts You Should Know
When MOS released the 6502 in 1975 for $25, it undercut Motorola and Intel by almost an order of magnitude. The low price came from aggressive chip layout and cost-focused manufacturing. This single move opened the door for affordable personal computers.
When MOS released the 6502 in 1975 for $25, it undercut Motorola and Intel by almost an order of magnitude. The low price came from aggressive chip layout and cost-focused manufacturing. This single move opened the door for affordable personal computers.
December 18, 2025 at 2:38 PM
MOS 6502: 5 Facts You Should Know
When MOS released the 6502 in 1975 for $25, it undercut Motorola and Intel by almost an order of magnitude. The low price came from aggressive chip layout and cost-focused manufacturing. This single move opened the door for affordable personal computers.
When MOS released the 6502 in 1975 for $25, it undercut Motorola and Intel by almost an order of magnitude. The low price came from aggressive chip layout and cost-focused manufacturing. This single move opened the door for affordable personal computers.
Assembled my rosco_m68k kit (~4 hours, careful build).
Powered it on — no boot.
Only START and RESET LEDs were on.
RESET pin on the CPU was sitting at ~2V. Definitely wrong.
Powered it on — no boot.
Only START and RESET LEDs were on.
RESET pin on the CPU was sitting at ~2V. Definitely wrong.
December 17, 2025 at 3:42 PM
Assembled my rosco_m68k kit (~4 hours, careful build).
Powered it on — no boot.
Only START and RESET LEDs were on.
RESET pin on the CPU was sitting at ~2V. Definitely wrong.
Powered it on — no boot.
Only START and RESET LEDs were on.
RESET pin on the CPU was sitting at ~2V. Definitely wrong.
PCBs finally arrived!
Boards for the rosco m68k, 6502, and SLC Free just landed. Half of the components are already sourced.
Also didn’t expect the rosco 6502 to be this compact.
Boards for the rosco m68k, 6502, and SLC Free just landed. Half of the components are already sourced.
Also didn’t expect the rosco 6502 to be this compact.
December 16, 2025 at 7:51 AM
PCBs finally arrived!
Boards for the rosco m68k, 6502, and SLC Free just landed. Half of the components are already sourced.
Also didn’t expect the rosco 6502 to be this compact.
Boards for the rosco m68k, 6502, and SLC Free just landed. Half of the components are already sourced.
Also didn’t expect the rosco 6502 to be this compact.
Never seen a pile of 68010 CPUs like this.
Almost 30 years old, but still perfect for learning real low-level computing.
Almost 30 years old, but still perfect for learning real low-level computing.
December 15, 2025 at 4:57 PM
Never seen a pile of 68010 CPUs like this.
Almost 30 years old, but still perfect for learning real low-level computing.
Almost 30 years old, but still perfect for learning real low-level computing.
I’ve been working on my project SolderDemon for about a month now. It’s a platform that helps you learn the basics of computer science, experiment with retro hardware, and write real low-level programs.
SolderDemon: solderdemon.com/en
SolderDemon: solderdemon.com/en
December 14, 2025 at 6:54 PM
I’ve been working on my project SolderDemon for about a month now. It’s a platform that helps you learn the basics of computer science, experiment with retro hardware, and write real low-level programs.
SolderDemon: solderdemon.com/en
SolderDemon: solderdemon.com/en