That is an excellent idea. I will do a video on the steps necessary to do it.

Thanks!

Sorry, I did a few videos with bad audio quality. I fixed it by doing them in another location now.

Now you've given me the urge to go find my headphones to see what it sounds like.

I'm working on making a kit available right now!

My next step will be to get CP/M running, then to build a dumb-terminal to attach so I don't need to tether to a PC. I think 80x25 character screen would be a good target to aim for first.

I'm just working on the PCB for v1.2 which adds a couple of minor features like a /INT button. I'll then make some kits and sell them.

I'm out of stock at present, but stock levels are updated on this page: 8bitstack.co.uk/buy-a-z80-playground

I've not looked at the CH340G. Not a bad idea! I chose the CH376 module because it has an 8-bit parallel interface. I'll do a video on how I connected to it, and the Z80 code to talk to it. The datasheet for it is, um, challenging!

I'm not sure. I suppose the memory mapping would just mean that the rom appeared 8 times over, repeated i memory.

@@CircuitBreaker256 I only ask because back in the day when the Z80 was new, I don't think they had 32k that were cheap enough to use like this. Also how much space does you monitor take 2k - 4k maybe ? I just hate wasting space. lol

@@johntilghman Well, I have a switchable system, so I can set the ROM area to be 16k or 32k. I was thinking I need to add 8k as an option too because I want to do a Jupiter Ace work-alike which I think was 8k or rom. I have not measured my monitor size, but it would be less than 4k easily. The thing is though, you can still put a 32k rom in the socket, but set the memory address space so only 16k is visible. Also, you can copy the rom to ram, turn off the rom (in software) and then run the monitor from ram, leaving all the rest of the ram free. That is my preferred option.

Yes, I plan to make the code etc available. I'm just working out how to do it.

@@CircuitBreaker256 I guess github would be great place for it

@@andrsam3682 yeah... gitlab or github.... then you get source control "for free" too.

Can I ask, if I made a kit available, including all components but not soldered together, and some instructions etc, what would you pay for it?

@@CircuitBreaker256 I would, cheers Albert

@@albertpauw8234 How much would you be willing to pay?

@@albertpauw8234 I am thinking of a kit containing the PCB, all the sockets, components etc, a ROM with a few interesting things already in it, and the FTDI cable, plus printed assembly instructions, and a link to a video where I assemble and test one myself.

@@CircuitBreaker256 I find that a tricky question. I have no idea how much the components are, plus some extra for all your work, plus shipping (I'm in The Netherlands).I can wait a few revisions. I programmed Z80 in the 80s (build an FM synth with it on n MSX machine), and MSXDOS (which was compatible with CPM). So all this is a trip down memory lane.