My Github, where you'll find all schematics, PCB layouts and a 62 page user's manual: [ Ссылка ]

My email, in case you want more info or give some feedback:
kaltchuk@gmail.com

Two years ago I was searching for some ICs in my component drawers and came across a Z80 CPU and an Intel 8251 USART. I had an instant flashback and remembered my first contact with a microprocessor back in 1982. It was a Z80. After a few minutes of nostalgia I decided to make good use of these components and build a computer.

Of course I couldn't avoid thinking about this "new project" with my Systems Engineer mindset. So, I established a few initial goals:

- This project is a hobby, so it has to be fun.
- It should use mainly technologies available in the 1980's.
- The computer has to run commercial software.
- The architecture should be modular allowing for new cards with specific functions.
- It also has to be a hardware/software development platform for students, hobbyists and enthusiasts.

After some research I decided to design the hardware fully compatible with CP/M 2.2.

One and a half years later I finally had my wire wrapped computer running CP/M. I could write programs using WordStar and compile them with a BDS C compiler or Microsoft Basic compiler. It was fun, exciting and challenging. After that, I decided it was time to turn the prototype into a finished product.

It's gratifying to see that in two years, alone, I was able to transform an idea into a final product.

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