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.