[jhbadger]

The RCA-1802 was used in the COSMAC Elf computer which was described as a hobbyist project to build in a series of articles in Popular Electronics 50 years ago. The Elf may be obscure but one thing developed on it (or its successor, the COSMAC VIP), CHIP-8, lives on -- it was (by some definitions) the first "fantasy console" like Pico-8 and TIC-80 today -- a virtual machine designed for writing action games.

https://en.wikipedia.org/wiki/COSMAC_Elf https://en.wikipedia.org/wiki/CHIP-8

[heikkilevanto]

Oh yes, I cut my teeth on a Finnish 1802 based TELMAC in the 1970s. It all of 2 kb of RAM (in 16 chips manually soldered on the board), and room for another 2kb if anyone would need so much, as it said in the instructions. I might almost be able to reconstruct the instruction set now, it was so deep ingrained in my brain. Once I had nightmares directly in hex. Sold my first pieces of code on that CPU, a 2kb long "monitor" rom, maybe a bit like a BIOS in today's terms. Added .5 kb of new features and optimized it so it could still fit in that 2kb EPROM.