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Tower of CPU

A project log for wirez80

Z80 machine with a hex keypad and 7-segment displays built on a cylindrical wireframe

matsengmatseng 12/29/2018 at 16:060 Comments

Bending 24 wires and cutting them to the right lengths was easy using a template that I made in Eagle .

40 pin CPU socket with cut and soldered address&data busses
40 pin CPU socket with cut and soldered address&data busses

I'll handle the remaining connections later, for now I'm happy to just get most of the wires done to get a rigid frame to work on.

Soldering this "spider" onto the cylinder was a bit scary, it felt like I almost broke off some of the legs on the IC socket. I really should have used a socket with higher quality...

But it ended up in once piece - and not looking so horrible that I'd just abandon the project. :-)

The CPU socket in place on the frame
The CPU socket in place on the frame


So far so good, now I only need to add two 28-pin and one 24-pin sockets as well. I'm not 100% convinced that I can fit them there so I might have to skip the UART and only go for the RAM and ROM.

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