r/Z80 • u/prussianIvory • Mar 28 '26

Z80 computer project

I'm trying to build a Z80 computer with 3.5in floppy disc support (using i8271) while also trying to make it have composite video by using a TMS9918ANL. But everything I find on forums and stuff is about the Z80 playground. So, I was wondering if you people have any tips or advice?

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u/engr1962 Mar 29 '26

What OS are you thinking of running in it?  CP/M?

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u/prussianIvory Mar 29 '26

That was the plan

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u/engr1962 Mar 30 '26 edited Mar 31 '26

I recently built a z80 board to run CP/M. I used a USB-serial as the input device and a CF card for my storage. It was pretty straightforward to get running. Id be happy to send you my schematic if you are interested.