Here's something I've been working on for the last month. It's my version of the ZX80, but using only ten standard parts
I've got it to the stage of being a 'TV typewriter' i.e. the terminal BIOS is done. Now I have to shoehorn a BASIC into the remaining ROM. I'm not really into BASIC. I wonder if I'd do better to add machine code development tools instead...?
The circuit to the right (in the white open case) is a ROM emulator that I built. It really speeds up development (especially as I have no EPROM programmer yet, so it could be said to speed things up infinitely!)
When it's finished I might add a serial expansion board and get it to drive my little printer