wintech,
You'll need to provide some more detail about what you would like to do.
If you want to get all the parts yourself and put them together, perhaps on solderless breadboards, than I vote +1 for wilfred's suggestion to use one of Grant Searle's designs. The 7-chip Z80 page is now at
http://zx80.netai.net/grant/z80/SimpleZ80.html and there are links to Grant's other low chip count designs for the 6809 and 6505 chips if you'd prefer to use one of them instead of the Z80.
The advantages of using Grant's design are:
- the smaller the chip count, the simpler it will be to wire it up without error
- Grant includes the ROM basic image that you can download. Program that into an EPROM and you can start using your 8-bit computer.
If you want to start using your vintage 8-bit computer after you assemble it and you are not setup to program EPROMs then consider a kit like one of these RC2014 kits
https://www.tindie.com/products/semachthemonkey/rc2014-mini-single-board-z80-computer-kit/https://www.tindie.com/products/semachthemonkey/rc2014-micro-single-board-z80-computer-kit/The RC2014 page that describes these designs is
https://rc2014.co.uk/ and there are links in the left-hand pane to those mini and micro kits.
The advantage of using a kit is:
- You get a set of parts provided that will work together. If you buy them yourself you have to do the investigation to get the right spec parts
- You get a PCB so are much less likely to need to debug your wiring
- You get a pre-programmed ROM chip. You don't need to be setup to program EPROMs yourself.
Going one step further you can get one of these type microprocessor trainers. These are for learing to program the microprocesser.
This link is someone who sells them as kits. I''ve not used one of these so I can't tell you if they are any good.
https://www.ebay.com.au/sch/m.html?item=283624635789&hash=item4209587d8d%3Ag%3ASjwAAOSwXeJXeMWT&_ssn=kswichit&_sop=15I bought a Micro-Professor MPF-I trainer
https://en.wikipedia.org/wiki/Micro-Professor_MPF-I many years ago to start learing Z80 assembler, which I why I've included a modern example of that type of kit.